drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 1 | /* |
drh | b19a2bc | 2001-09-16 00:13:26 +0000 | [diff] [blame] | 2 | ** 2001 September 15 |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 3 | ** |
drh | b19a2bc | 2001-09-16 00:13:26 +0000 | [diff] [blame] | 4 | ** The author disclaims copyright to this source code. In place of |
| 5 | ** a legal notice, here is a blessing: |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 6 | ** |
drh | b19a2bc | 2001-09-16 00:13:26 +0000 | [diff] [blame] | 7 | ** May you do good and not evil. |
| 8 | ** May you find forgiveness for yourself and forgive others. |
| 9 | ** May you share freely, never taking more than you give. |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 10 | ** |
| 11 | ************************************************************************* |
| 12 | ** Internal interface definitions for SQLite. |
| 13 | ** |
danielk1977 | aee18ef | 2005-03-09 12:26:50 +0000 | [diff] [blame] | 14 | ** @(#) $Id: sqliteInt.h,v 1.372 2005/03/09 12:26:51 danielk1977 Exp $ |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 15 | */ |
danielk1977 | e302663 | 2004-06-22 11:29:02 +0000 | [diff] [blame] | 16 | #ifndef _SQLITEINT_H_ |
| 17 | #define _SQLITEINT_H_ |
| 18 | |
drh | eb20625 | 2004-10-01 02:00:31 +0000 | [diff] [blame] | 19 | /* |
| 20 | ** These #defines should enable >2GB file support on Posix if the |
| 21 | ** underlying operating system supports it. If the OS lacks |
| 22 | ** large file support, or if the OS is windows, these should be no-ops. |
| 23 | ** |
| 24 | ** Large file support can be disabled using the -DSQLITE_DISABLE_LFS switch |
| 25 | ** on the compiler command line. This is necessary if you are compiling |
| 26 | ** on a recent machine (ex: RedHat 7.2) but you want your code to work |
| 27 | ** on an older machine (ex: RedHat 6.0). If you compile on RedHat 7.2 |
| 28 | ** without this option, LFS is enable. But LFS does not exist in the kernel |
| 29 | ** in RedHat 6.0, so the code won't work. Hence, for maximum binary |
| 30 | ** portability you should omit LFS. |
| 31 | ** |
| 32 | ** Similar is true for MacOS. LFS is only supported on MacOS 9 and later. |
| 33 | */ |
| 34 | #ifndef SQLITE_DISABLE_LFS |
| 35 | # define _LARGE_FILE 1 |
| 36 | # ifndef _FILE_OFFSET_BITS |
| 37 | # define _FILE_OFFSET_BITS 64 |
| 38 | # endif |
| 39 | # define _LARGEFILE_SOURCE 1 |
| 40 | #endif |
| 41 | |
drh | 58f391b | 2002-11-20 11:55:18 +0000 | [diff] [blame] | 42 | #include "config.h" |
drh | 1d482dd | 2004-05-31 18:23:07 +0000 | [diff] [blame] | 43 | #include "sqlite3.h" |
drh | beae319 | 2001-09-22 18:12:08 +0000 | [diff] [blame] | 44 | #include "hash.h" |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 45 | #include "parse.h" |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 46 | #include <stdio.h> |
| 47 | #include <stdlib.h> |
| 48 | #include <string.h> |
| 49 | #include <assert.h> |
drh | 52370e2 | 2005-01-21 21:31:40 +0000 | [diff] [blame] | 50 | #include <stddef.h> |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 51 | |
drh | 967e8b7 | 2000-06-21 13:59:10 +0000 | [diff] [blame] | 52 | /* |
drh | a1b351a | 2001-09-14 16:42:12 +0000 | [diff] [blame] | 53 | ** The maximum number of in-memory pages to use for the main database |
danielk1977 | 24c8ab8 | 2005-02-09 01:40:23 +0000 | [diff] [blame] | 54 | ** table and for temporary tables. Internally, the MAX_PAGES and |
| 55 | ** TEMP_PAGES macros are used. To override the default values at |
| 56 | ** compilation time, the SQLITE_DEFAULT_CACHE_SIZE and |
| 57 | ** SQLITE_DEFAULT_TEMP_CACHE_SIZE macros should be set. |
drh | a1b351a | 2001-09-14 16:42:12 +0000 | [diff] [blame] | 58 | */ |
drh | 1ba1e6e | 2005-01-21 21:22:52 +0000 | [diff] [blame] | 59 | #ifdef SQLITE_DEFAULT_CACHE_SIZE |
| 60 | # define MAX_PAGES SQLITE_DEFAULT_CACHE_SIZE |
| 61 | #else |
| 62 | # define MAX_PAGES 2000 |
| 63 | #endif |
danielk1977 | 24c8ab8 | 2005-02-09 01:40:23 +0000 | [diff] [blame] | 64 | #ifdef SQLITE_DEFAULT_TEMP_CACHE_SIZE |
| 65 | # define TEMP_PAGES SQLITE_DEFAULT_TEMP_CACHE_SIZE |
| 66 | #else |
| 67 | # define TEMP_PAGES 500 |
| 68 | #endif |
drh | a1b351a | 2001-09-14 16:42:12 +0000 | [diff] [blame] | 69 | |
| 70 | /* |
drh | 0bd1f4e | 2002-06-06 18:54:39 +0000 | [diff] [blame] | 71 | ** If the following macro is set to 1, then NULL values are considered |
| 72 | ** distinct for the SELECT DISTINCT statement and for UNION or EXCEPT |
| 73 | ** compound queries. No other SQL database engine (among those tested) |
| 74 | ** works this way except for OCELOT. But the SQL92 spec implies that |
| 75 | ** this is how things should work. |
| 76 | ** |
| 77 | ** If the following macro is set to 0, then NULLs are indistinct for |
| 78 | ** SELECT DISTINCT and for UNION. |
| 79 | */ |
| 80 | #define NULL_ALWAYS_DISTINCT 0 |
| 81 | |
| 82 | /* |
| 83 | ** If the following macro is set to 1, then NULL values are considered |
| 84 | ** distinct when determining whether or not two entries are the same |
| 85 | ** in a UNIQUE index. This is the way PostgreSQL, Oracle, DB2, MySQL, |
| 86 | ** OCELOT, and Firebird all work. The SQL92 spec explicitly says this |
| 87 | ** is the way things are suppose to work. |
| 88 | ** |
| 89 | ** If the following macro is set to 0, the NULLs are indistinct for |
| 90 | ** a UNIQUE index. In this mode, you can only have a single NULL entry |
| 91 | ** for a column declared UNIQUE. This is the way Informix and SQL Server |
| 92 | ** work. |
| 93 | */ |
| 94 | #define NULL_DISTINCT_FOR_UNIQUE 1 |
| 95 | |
| 96 | /* |
drh | 665de47 | 2003-03-31 13:36:09 +0000 | [diff] [blame] | 97 | ** The maximum number of attached databases. This must be at least 2 |
| 98 | ** in order to support the main database file (0) and the file used to |
drh | 8024205 | 2004-06-09 00:48:12 +0000 | [diff] [blame] | 99 | ** hold temporary tables (1). And it must be less than 32 because |
| 100 | ** we use a bitmask of databases with a u32 in places (for example |
| 101 | ** the Parse.cookieMask field). |
drh | 665de47 | 2003-03-31 13:36:09 +0000 | [diff] [blame] | 102 | */ |
| 103 | #define MAX_ATTACHED 10 |
| 104 | |
| 105 | /* |
drh | fa6bc00 | 2004-09-07 16:19:52 +0000 | [diff] [blame] | 106 | ** The maximum value of a ?nnn wildcard that the parser will accept. |
| 107 | */ |
| 108 | #define SQLITE_MAX_VARIABLE_NUMBER 999 |
| 109 | |
| 110 | /* |
drh | 13bff81 | 2003-04-15 01:19:47 +0000 | [diff] [blame] | 111 | ** When building SQLite for embedded systems where memory is scarce, |
| 112 | ** you can define one or more of the following macros to omit extra |
| 113 | ** features of the library and thus keep the size of the library to |
| 114 | ** a minimum. |
| 115 | */ |
| 116 | /* #define SQLITE_OMIT_AUTHORIZATION 1 */ |
danielk1977 | 3e8c37e | 2005-01-21 03:12:14 +0000 | [diff] [blame] | 117 | /* #define SQLITE_OMIT_MEMORYDB 1 */ |
drh | 13bff81 | 2003-04-15 01:19:47 +0000 | [diff] [blame] | 118 | /* #define SQLITE_OMIT_VACUUM 1 */ |
drh | 0a5294b | 2003-11-11 23:30:35 +0000 | [diff] [blame] | 119 | /* #define SQLITE_OMIT_DATETIME_FUNCS 1 */ |
danielk1977 | 348bb5d | 2003-10-18 09:37:26 +0000 | [diff] [blame] | 120 | /* #define SQLITE_OMIT_PROGRESS_CALLBACK 1 */ |
danielk1977 | 45901d6 | 2004-11-10 15:27:38 +0000 | [diff] [blame] | 121 | /* #define SQLITE_OMIT_AUTOVACUUM */ |
danielk1977 | 9fd2a9a | 2004-11-12 13:42:30 +0000 | [diff] [blame] | 122 | /* #define SQLITE_OMIT_ALTERTABLE */ |
drh | 13bff81 | 2003-04-15 01:19:47 +0000 | [diff] [blame] | 123 | |
| 124 | /* |
drh | 49766d6 | 2005-01-08 18:42:28 +0000 | [diff] [blame] | 125 | ** Provide a default value for TEMP_STORE in case it is not specified |
| 126 | ** on the command-line |
| 127 | */ |
| 128 | #ifndef TEMP_STORE |
| 129 | # define TEMP_STORE 1 |
| 130 | #endif |
| 131 | |
| 132 | /* |
drh | f197484 | 2004-11-05 03:56:00 +0000 | [diff] [blame] | 133 | ** GCC does not define the offsetof() macro so we'll have to do it |
| 134 | ** ourselves. |
| 135 | */ |
| 136 | #ifndef offsetof |
| 137 | #define offsetof(STRUCTURE,FIELD) ((int)((char*)&((STRUCTURE*)0)->FIELD)) |
| 138 | #endif |
| 139 | |
| 140 | /* |
drh | 5a2c2c2 | 2001-11-21 02:21:11 +0000 | [diff] [blame] | 141 | ** Integers of known sizes. These typedefs might change for architectures |
| 142 | ** where the sizes very. Preprocessor macros are available so that the |
| 143 | ** types can be conveniently redefined at compile-type. Like this: |
| 144 | ** |
| 145 | ** cc '-DUINTPTR_TYPE=long long int' ... |
drh | 41a2b48 | 2001-01-20 19:52:49 +0000 | [diff] [blame] | 146 | */ |
drh | 3aac2dd | 2004-04-26 14:10:20 +0000 | [diff] [blame] | 147 | #ifndef UINT64_TYPE |
drh | efad999 | 2004-06-22 12:13:55 +0000 | [diff] [blame] | 148 | # if defined(_MSC_VER) || defined(__BORLANDC__) |
| 149 | # define UINT64_TYPE unsigned __int64 |
| 150 | # else |
| 151 | # define UINT64_TYPE unsigned long long int |
| 152 | # endif |
drh | 3aac2dd | 2004-04-26 14:10:20 +0000 | [diff] [blame] | 153 | #endif |
drh | 5a2c2c2 | 2001-11-21 02:21:11 +0000 | [diff] [blame] | 154 | #ifndef UINT32_TYPE |
| 155 | # define UINT32_TYPE unsigned int |
| 156 | #endif |
| 157 | #ifndef UINT16_TYPE |
| 158 | # define UINT16_TYPE unsigned short int |
| 159 | #endif |
drh | 939a16d | 2004-07-15 13:37:22 +0000 | [diff] [blame] | 160 | #ifndef INT16_TYPE |
| 161 | # define INT16_TYPE short int |
| 162 | #endif |
drh | 5a2c2c2 | 2001-11-21 02:21:11 +0000 | [diff] [blame] | 163 | #ifndef UINT8_TYPE |
| 164 | # define UINT8_TYPE unsigned char |
| 165 | #endif |
drh | 905793e | 2004-02-21 13:31:09 +0000 | [diff] [blame] | 166 | #ifndef INT8_TYPE |
| 167 | # define INT8_TYPE signed char |
| 168 | #endif |
drh | efad999 | 2004-06-22 12:13:55 +0000 | [diff] [blame] | 169 | #ifndef LONGDOUBLE_TYPE |
| 170 | # define LONGDOUBLE_TYPE long double |
| 171 | #endif |
drh | 5a2c2c2 | 2001-11-21 02:21:11 +0000 | [diff] [blame] | 172 | #ifndef INTPTR_TYPE |
drh | 58f391b | 2002-11-20 11:55:18 +0000 | [diff] [blame] | 173 | # if SQLITE_PTR_SZ==4 |
| 174 | # define INTPTR_TYPE int |
| 175 | # else |
drh | efad999 | 2004-06-22 12:13:55 +0000 | [diff] [blame] | 176 | # define INTPTR_TYPE sqlite_int64 |
drh | d2f0a72 | 2004-08-04 14:29:22 +0000 | [diff] [blame] | 177 | # endif |
| 178 | #endif |
| 179 | #ifndef UINTPTR_TYPE |
| 180 | # if SQLITE_PTR_SZ==4 |
| 181 | # define UINTPTR_TYPE unsigned int |
| 182 | # else |
drh | 1211de3 | 2004-07-26 12:24:22 +0000 | [diff] [blame] | 183 | # define UINTPTR_TYPE sqlite_uint64 |
drh | 58f391b | 2002-11-20 11:55:18 +0000 | [diff] [blame] | 184 | # endif |
drh | 5a2c2c2 | 2001-11-21 02:21:11 +0000 | [diff] [blame] | 185 | #endif |
drh | efad999 | 2004-06-22 12:13:55 +0000 | [diff] [blame] | 186 | typedef sqlite_int64 i64; /* 8-byte signed integer */ |
drh | 3aac2dd | 2004-04-26 14:10:20 +0000 | [diff] [blame] | 187 | typedef UINT64_TYPE u64; /* 8-byte unsigned integer */ |
drh | 5a2c2c2 | 2001-11-21 02:21:11 +0000 | [diff] [blame] | 188 | typedef UINT32_TYPE u32; /* 4-byte unsigned integer */ |
| 189 | typedef UINT16_TYPE u16; /* 2-byte unsigned integer */ |
drh | 939a16d | 2004-07-15 13:37:22 +0000 | [diff] [blame] | 190 | typedef INT16_TYPE i16; /* 2-byte signed integer */ |
drh | 5a2c2c2 | 2001-11-21 02:21:11 +0000 | [diff] [blame] | 191 | typedef UINT8_TYPE u8; /* 1-byte unsigned integer */ |
drh | 905793e | 2004-02-21 13:31:09 +0000 | [diff] [blame] | 192 | typedef UINT8_TYPE i8; /* 1-byte signed integer */ |
drh | 5a2c2c2 | 2001-11-21 02:21:11 +0000 | [diff] [blame] | 193 | typedef INTPTR_TYPE ptr; /* Big enough to hold a pointer */ |
drh | 1211de3 | 2004-07-26 12:24:22 +0000 | [diff] [blame] | 194 | typedef UINTPTR_TYPE uptr; /* Big enough to hold a pointer */ |
drh | 5a2c2c2 | 2001-11-21 02:21:11 +0000 | [diff] [blame] | 195 | |
| 196 | /* |
drh | bbd42a6 | 2004-05-22 17:41:58 +0000 | [diff] [blame] | 197 | ** Macros to determine whether the machine is big or little endian, |
| 198 | ** evaluated at runtime. |
| 199 | */ |
| 200 | extern const int sqlite3one; |
drh | 9c05483 | 2004-05-31 18:51:57 +0000 | [diff] [blame] | 201 | #define SQLITE_BIGENDIAN (*(char *)(&sqlite3one)==0) |
| 202 | #define SQLITE_LITTLEENDIAN (*(char *)(&sqlite3one)==1) |
drh | bbd42a6 | 2004-05-22 17:41:58 +0000 | [diff] [blame] | 203 | |
| 204 | /* |
drh | 90f5ecb | 2004-07-22 01:19:35 +0000 | [diff] [blame] | 205 | ** An instance of the following structure is used to store the busy-handler |
| 206 | ** callback for a given sqlite handle. |
| 207 | ** |
| 208 | ** The sqlite.busyHandler member of the sqlite struct contains the busy |
| 209 | ** callback for the database handle. Each pager opened via the sqlite |
| 210 | ** handle is passed a pointer to sqlite.busyHandler. The busy-handler |
| 211 | ** callback is currently invoked only from within pager.c. |
| 212 | */ |
| 213 | typedef struct BusyHandler BusyHandler; |
| 214 | struct BusyHandler { |
| 215 | int (*xFunc)(void *,int); /* The busy callback */ |
| 216 | void *pArg; /* First arg to busy callback */ |
| 217 | }; |
| 218 | |
| 219 | /* |
| 220 | ** Defer sourcing vdbe.h and btree.h until after the "u8" and |
| 221 | ** "BusyHandler typedefs. |
drh | 905793e | 2004-02-21 13:31:09 +0000 | [diff] [blame] | 222 | */ |
| 223 | #include "vdbe.h" |
drh | 3aac2dd | 2004-04-26 14:10:20 +0000 | [diff] [blame] | 224 | #include "btree.h" |
drh | 905793e | 2004-02-21 13:31:09 +0000 | [diff] [blame] | 225 | |
| 226 | /* |
drh | 5a2c2c2 | 2001-11-21 02:21:11 +0000 | [diff] [blame] | 227 | ** This macro casts a pointer to an integer. Useful for doing |
| 228 | ** pointer arithmetic. |
| 229 | */ |
| 230 | #define Addr(X) ((uptr)X) |
drh | 41a2b48 | 2001-01-20 19:52:49 +0000 | [diff] [blame] | 231 | |
| 232 | /* |
drh | 967e8b7 | 2000-06-21 13:59:10 +0000 | [diff] [blame] | 233 | ** If memory allocation problems are found, recompile with |
| 234 | ** |
drh | faa57ac | 2004-06-09 14:01:51 +0000 | [diff] [blame] | 235 | ** -DSQLITE_DEBUG=1 |
drh | 967e8b7 | 2000-06-21 13:59:10 +0000 | [diff] [blame] | 236 | ** |
| 237 | ** to enable some sanity checking on malloc() and free(). To |
| 238 | ** check for memory leaks, recompile with |
| 239 | ** |
drh | faa57ac | 2004-06-09 14:01:51 +0000 | [diff] [blame] | 240 | ** -DSQLITE_DEBUG=2 |
drh | 967e8b7 | 2000-06-21 13:59:10 +0000 | [diff] [blame] | 241 | ** |
| 242 | ** and a line of text will be written to standard error for |
| 243 | ** each malloc() and free(). This output can be analyzed |
| 244 | ** by an AWK script to determine if there are any leaks. |
| 245 | */ |
danielk1977 | 2c33654 | 2005-01-13 02:14:23 +0000 | [diff] [blame] | 246 | #ifdef SQLITE_MEMDEBUG |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 247 | # define sqliteMalloc(X) sqlite3Malloc_(X,1,__FILE__,__LINE__) |
| 248 | # define sqliteMallocRaw(X) sqlite3Malloc_(X,0,__FILE__,__LINE__) |
| 249 | # define sqliteFree(X) sqlite3Free_(X,__FILE__,__LINE__) |
| 250 | # define sqliteRealloc(X,Y) sqlite3Realloc_(X,Y,__FILE__,__LINE__) |
| 251 | # define sqliteStrDup(X) sqlite3StrDup_(X,__FILE__,__LINE__) |
| 252 | # define sqliteStrNDup(X,Y) sqlite3StrNDup_(X,Y,__FILE__,__LINE__) |
drh | c3c2fc9 | 2000-05-31 22:58:39 +0000 | [diff] [blame] | 253 | #else |
drh | 38f8271 | 2004-06-18 17:10:16 +0000 | [diff] [blame] | 254 | # define sqliteFree sqlite3FreeX |
| 255 | # define sqliteMalloc sqlite3Malloc |
| 256 | # define sqliteMallocRaw sqlite3MallocRaw |
| 257 | # define sqliteRealloc sqlite3Realloc |
drh | ae29ffb | 2004-09-25 14:39:18 +0000 | [diff] [blame] | 258 | # define sqliteStrDup sqlite3StrDup |
| 259 | # define sqliteStrNDup sqlite3StrNDup |
drh | dcc581c | 2000-05-30 13:44:19 +0000 | [diff] [blame] | 260 | #endif |
| 261 | |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 262 | /* |
drh | daffd0e | 2001-04-11 14:28:42 +0000 | [diff] [blame] | 263 | ** This variable gets set if malloc() ever fails. After it gets set, |
| 264 | ** the SQLite library shuts down permanently. |
| 265 | */ |
danielk1977 | 6f8a503 | 2004-05-10 10:34:51 +0000 | [diff] [blame] | 266 | extern int sqlite3_malloc_failed; |
drh | daffd0e | 2001-04-11 14:28:42 +0000 | [diff] [blame] | 267 | |
| 268 | /* |
drh | 6e142f5 | 2000-06-08 13:36:40 +0000 | [diff] [blame] | 269 | ** The following global variables are used for testing and debugging |
drh | faa57ac | 2004-06-09 14:01:51 +0000 | [diff] [blame] | 270 | ** only. They only work if SQLITE_DEBUG is defined. |
drh | 6e142f5 | 2000-06-08 13:36:40 +0000 | [diff] [blame] | 271 | */ |
danielk1977 | 2c33654 | 2005-01-13 02:14:23 +0000 | [diff] [blame] | 272 | #ifdef SQLITE_MEMDEBUG |
drh | 4693423 | 2004-11-20 19:18:00 +0000 | [diff] [blame] | 273 | extern int sqlite3_nMalloc; /* Number of sqliteMalloc() calls */ |
| 274 | extern int sqlite3_nFree; /* Number of sqliteFree() calls */ |
| 275 | extern int sqlite3_iMallocFail; /* Fail sqliteMalloc() after this many calls */ |
| 276 | extern int sqlite3_iMallocReset; /* Set iMallocFail to this when it reaches 0 */ |
drh | 6e142f5 | 2000-06-08 13:36:40 +0000 | [diff] [blame] | 277 | #endif |
| 278 | |
| 279 | /* |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 280 | ** Name of the master database table. The master database table |
| 281 | ** is a special table that holds the names and attributes of all |
| 282 | ** user tables and indices. |
| 283 | */ |
drh | e0bc404 | 2002-06-25 01:09:11 +0000 | [diff] [blame] | 284 | #define MASTER_NAME "sqlite_master" |
| 285 | #define TEMP_MASTER_NAME "sqlite_temp_master" |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 286 | |
| 287 | /* |
danielk1977 | 8e15081 | 2004-05-10 01:17:37 +0000 | [diff] [blame] | 288 | ** The root-page of the master database table. |
| 289 | */ |
| 290 | #define MASTER_ROOT 1 |
| 291 | |
| 292 | /* |
drh | ed6c867 | 2003-01-12 18:02:16 +0000 | [diff] [blame] | 293 | ** The name of the schema table. |
| 294 | */ |
danielk1977 | ef2cb63 | 2004-05-29 02:37:19 +0000 | [diff] [blame] | 295 | #define SCHEMA_TABLE(x) (x==1?TEMP_MASTER_NAME:MASTER_NAME) |
drh | ed6c867 | 2003-01-12 18:02:16 +0000 | [diff] [blame] | 296 | |
| 297 | /* |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 298 | ** A convenience macro that returns the number of elements in |
| 299 | ** an array. |
| 300 | */ |
| 301 | #define ArraySize(X) (sizeof(X)/sizeof(X[0])) |
| 302 | |
| 303 | /* |
| 304 | ** Forward references to structures |
| 305 | */ |
drh | 7020f65 | 2000-06-03 18:06:52 +0000 | [diff] [blame] | 306 | typedef struct Column Column; |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 307 | typedef struct Table Table; |
| 308 | typedef struct Index Index; |
| 309 | typedef struct Instruction Instruction; |
| 310 | typedef struct Expr Expr; |
| 311 | typedef struct ExprList ExprList; |
| 312 | typedef struct Parse Parse; |
| 313 | typedef struct Token Token; |
| 314 | typedef struct IdList IdList; |
drh | ad3cab5 | 2002-05-24 02:04:32 +0000 | [diff] [blame] | 315 | typedef struct SrcList SrcList; |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 316 | typedef struct WhereInfo WhereInfo; |
drh | 6b56344 | 2001-11-07 16:48:26 +0000 | [diff] [blame] | 317 | typedef struct WhereLevel WhereLevel; |
drh | 9bb61fe | 2000-06-05 16:01:39 +0000 | [diff] [blame] | 318 | typedef struct Select Select; |
drh | 2282792 | 2000-06-06 17:27:05 +0000 | [diff] [blame] | 319 | typedef struct AggExpr AggExpr; |
drh | 0bce835 | 2002-02-28 00:41:10 +0000 | [diff] [blame] | 320 | typedef struct FuncDef FuncDef; |
danielk1977 | c3f9bad | 2002-05-15 08:30:12 +0000 | [diff] [blame] | 321 | typedef struct Trigger Trigger; |
| 322 | typedef struct TriggerStep TriggerStep; |
| 323 | typedef struct TriggerStack TriggerStack; |
drh | c2eef3b | 2002-08-31 18:53:06 +0000 | [diff] [blame] | 324 | typedef struct FKey FKey; |
drh | 001bbcb | 2003-03-19 03:14:00 +0000 | [diff] [blame] | 325 | typedef struct Db Db; |
drh | 85e2096 | 2003-04-25 17:52:11 +0000 | [diff] [blame] | 326 | typedef struct AuthContext AuthContext; |
danielk1977 | 8d05984 | 2004-05-12 11:24:02 +0000 | [diff] [blame] | 327 | typedef struct KeyClass KeyClass; |
drh | a9fd84b | 2004-05-18 23:21:35 +0000 | [diff] [blame] | 328 | typedef struct CollSeq CollSeq; |
drh | d3d39e9 | 2004-05-20 22:16:29 +0000 | [diff] [blame] | 329 | typedef struct KeyInfo KeyInfo; |
drh | 626a879 | 2005-01-17 22:08:19 +0000 | [diff] [blame] | 330 | typedef struct NameContext NameContext; |
drh | b6c2989 | 2004-11-22 19:12:19 +0000 | [diff] [blame] | 331 | typedef struct Fetch Fetch; |
drh | d3d39e9 | 2004-05-20 22:16:29 +0000 | [diff] [blame] | 332 | |
drh | 001bbcb | 2003-03-19 03:14:00 +0000 | [diff] [blame] | 333 | /* |
| 334 | ** Each database file to be accessed by the system is an instance |
| 335 | ** of the following structure. There are normally two of these structures |
| 336 | ** in the sqlite.aDb[] array. aDb[0] is the main database file and |
drh | a69d916 | 2003-04-17 22:57:53 +0000 | [diff] [blame] | 337 | ** aDb[1] is the database file used to hold temporary tables. Additional |
| 338 | ** databases may be attached. |
drh | 001bbcb | 2003-03-19 03:14:00 +0000 | [diff] [blame] | 339 | */ |
| 340 | struct Db { |
| 341 | char *zName; /* Name of this database */ |
| 342 | Btree *pBt; /* The B*Tree structure for this database file */ |
| 343 | int schema_cookie; /* Database schema version number for this file */ |
drh | d24cc42 | 2003-03-27 12:51:24 +0000 | [diff] [blame] | 344 | Hash tblHash; /* All tables indexed by name */ |
| 345 | Hash idxHash; /* All (named) indices indexed by name */ |
| 346 | Hash trigHash; /* All triggers indexed by name */ |
| 347 | Hash aFKey; /* Foreign keys indexed by to-table */ |
drh | d24cc42 | 2003-03-27 12:51:24 +0000 | [diff] [blame] | 348 | u16 flags; /* Flags associated with this database */ |
drh | 90f5ecb | 2004-07-22 01:19:35 +0000 | [diff] [blame] | 349 | u8 inTrans; /* 0: not writable. 1: Transaction. 2: Checkpoint */ |
danielk1977 | 91cf71b | 2004-06-26 06:37:06 +0000 | [diff] [blame] | 350 | u8 safety_level; /* How aggressive at synching data to disk */ |
| 351 | int cache_size; /* Number of pages to use in the cache */ |
drh | 4794f73 | 2004-11-05 17:17:50 +0000 | [diff] [blame] | 352 | Table *pSeqTab; /* The sqlite_sequence table used by AUTOINCREMENT */ |
| 353 | void *pAux; /* Auxiliary data. Usually NULL */ |
drh | 4d189ca | 2004-02-12 18:46:38 +0000 | [diff] [blame] | 354 | void (*xFreeAux)(void*); /* Routine to free pAux */ |
drh | 001bbcb | 2003-03-19 03:14:00 +0000 | [diff] [blame] | 355 | }; |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 356 | |
| 357 | /* |
drh | 8bf8dc9 | 2003-05-17 17:35:10 +0000 | [diff] [blame] | 358 | ** These macros can be used to test, set, or clear bits in the |
| 359 | ** Db.flags field. |
| 360 | */ |
| 361 | #define DbHasProperty(D,I,P) (((D)->aDb[I].flags&(P))==(P)) |
| 362 | #define DbHasAnyProperty(D,I,P) (((D)->aDb[I].flags&(P))!=0) |
| 363 | #define DbSetProperty(D,I,P) (D)->aDb[I].flags|=(P) |
| 364 | #define DbClearProperty(D,I,P) (D)->aDb[I].flags&=~(P) |
| 365 | |
| 366 | /* |
| 367 | ** Allowed values for the DB.flags field. |
| 368 | ** |
drh | 8bf8dc9 | 2003-05-17 17:35:10 +0000 | [diff] [blame] | 369 | ** The DB_SchemaLoaded flag is set after the database schema has been |
| 370 | ** read into internal hash tables. |
| 371 | ** |
| 372 | ** DB_UnresetViews means that one or more views have column names that |
| 373 | ** have been filled out. If the schema changes, these column names might |
| 374 | ** changes and so the view will need to be reset. |
| 375 | */ |
drh | 124b27e | 2004-06-19 16:06:10 +0000 | [diff] [blame] | 376 | #define DB_SchemaLoaded 0x0001 /* The schema has been loaded */ |
| 377 | #define DB_UnresetViews 0x0002 /* Some views have defined column names */ |
drh | 8bf8dc9 | 2003-05-17 17:35:10 +0000 | [diff] [blame] | 378 | |
danielk1977 | dc8453f | 2004-06-12 00:42:34 +0000 | [diff] [blame] | 379 | #define SQLITE_UTF16NATIVE (SQLITE_BIGENDIAN?SQLITE_UTF16BE:SQLITE_UTF16LE) |
drh | 8bf8dc9 | 2003-05-17 17:35:10 +0000 | [diff] [blame] | 380 | |
| 381 | /* |
drh | c9b84a1 | 2002-06-20 11:36:48 +0000 | [diff] [blame] | 382 | ** Each database is an instance of the following structure. |
| 383 | ** |
rdc | b0c374f | 2004-02-20 22:53:38 +0000 | [diff] [blame] | 384 | ** The sqlite.lastRowid records the last insert rowid generated by an |
| 385 | ** insert statement. Inserts on views do not affect its value. Each |
| 386 | ** trigger has its own context, so that lastRowid can be updated inside |
| 387 | ** triggers as usual. The previous value will be restored once the trigger |
| 388 | ** exits. Upon entering a before or instead of trigger, lastRowid is no |
| 389 | ** longer (since after version 2.8.12) reset to -1. |
| 390 | ** |
| 391 | ** The sqlite.nChange does not count changes within triggers and keeps no |
danielk1977 | 6f8a503 | 2004-05-10 10:34:51 +0000 | [diff] [blame] | 392 | ** context. It is reset at start of sqlite3_exec. |
rdc | b0c374f | 2004-02-20 22:53:38 +0000 | [diff] [blame] | 393 | ** The sqlite.lsChange represents the number of changes made by the last |
| 394 | ** insert, update, or delete statement. It remains constant throughout the |
| 395 | ** length of a statement and is then updated by OP_SetCounts. It keeps a |
| 396 | ** context stack just like lastRowid so that the count of changes |
| 397 | ** within a trigger is not seen outside the trigger. Changes to views do not |
| 398 | ** affect the value of lsChange. |
| 399 | ** The sqlite.csChange keeps track of the number of current changes (since |
| 400 | ** the last statement) and is used to update sqlite_lsChange. |
danielk1977 | 6622cce | 2004-05-20 11:00:52 +0000 | [diff] [blame] | 401 | ** |
| 402 | ** The member variables sqlite.errCode, sqlite.zErrMsg and sqlite.zErrMsg16 |
| 403 | ** store the most recent error code and, if applicable, string. The |
| 404 | ** internal function sqlite3Error() is used to set these variables |
| 405 | ** consistently. |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 406 | */ |
drh | 9bb575f | 2004-09-06 17:24:11 +0000 | [diff] [blame] | 407 | struct sqlite3 { |
drh | 001bbcb | 2003-03-19 03:14:00 +0000 | [diff] [blame] | 408 | int nDb; /* Number of backends currently in use */ |
| 409 | Db *aDb; /* All backends */ |
| 410 | Db aDbStatic[2]; /* Static space for the 2 default backends */ |
drh | 5e00f6c | 2001-09-13 13:46:56 +0000 | [diff] [blame] | 411 | int flags; /* Miscellanous flags. See below */ |
drh | 973b6e3 | 2003-02-12 14:09:42 +0000 | [diff] [blame] | 412 | u8 file_format; /* What file format version is this database? */ |
drh | 90f5ecb | 2004-07-22 01:19:35 +0000 | [diff] [blame] | 413 | u8 temp_store; /* 1: file 2: memory 0: default */ |
drh | 5e00f6c | 2001-09-13 13:46:56 +0000 | [diff] [blame] | 414 | int nTable; /* Number of tables in the database */ |
danielk1977 | 24162fe | 2004-06-04 06:22:00 +0000 | [diff] [blame] | 415 | BusyHandler busyHandler; /* Busy callback */ |
drh | aa940ea | 2004-01-15 02:44:03 +0000 | [diff] [blame] | 416 | void *pCommitArg; /* Argument to xCommitCallback() */ |
| 417 | int (*xCommitCallback)(void*);/* Invoked at every commit. */ |
drh | 0bce835 | 2002-02-28 00:41:10 +0000 | [diff] [blame] | 418 | Hash aFunc; /* All functions that can be in SQL exprs */ |
drh | a9fd84b | 2004-05-18 23:21:35 +0000 | [diff] [blame] | 419 | Hash aCollSeq; /* All collating sequences */ |
drh | d3d39e9 | 2004-05-20 22:16:29 +0000 | [diff] [blame] | 420 | CollSeq *pDfltColl; /* The default collating sequence (BINARY) */ |
drh | f328bc8 | 2004-05-10 23:29:49 +0000 | [diff] [blame] | 421 | i64 lastRowid; /* ROWID of most recent insert (see above) */ |
| 422 | i64 priorNewRowid; /* Last randomly generated ROWID */ |
drh | 247be43 | 2002-05-10 05:44:55 +0000 | [diff] [blame] | 423 | int magic; /* Magic number for detect library misuse */ |
danielk1977 | b28af71 | 2004-06-21 06:50:26 +0000 | [diff] [blame] | 424 | int nChange; /* Value returned by sqlite3_changes() */ |
| 425 | int nTotalChange; /* Value returned by sqlite3_total_changes() */ |
| 426 | struct sqlite3InitInfo { /* Information used during initialization */ |
| 427 | int iDb; /* When back is being initialized */ |
| 428 | int newTnum; /* Rootpage of table being initialized */ |
| 429 | u8 busy; /* TRUE if currently initializing */ |
drh | 1d85d93 | 2004-02-14 23:05:52 +0000 | [diff] [blame] | 430 | } init; |
drh | 326dce7 | 2003-01-29 14:06:07 +0000 | [diff] [blame] | 431 | struct Vdbe *pVdbe; /* List of active virtual machines */ |
danielk1977 | 1d850a7 | 2004-05-31 08:26:49 +0000 | [diff] [blame] | 432 | int activeVdbeCnt; /* Number of vdbes currently executing */ |
drh | 18de482 | 2003-01-16 16:28:53 +0000 | [diff] [blame] | 433 | void (*xTrace)(void*,const char*); /* Trace function */ |
| 434 | void *pTraceArg; /* Argument to the trace function */ |
drh | ed6c867 | 2003-01-12 18:02:16 +0000 | [diff] [blame] | 435 | #ifndef SQLITE_OMIT_AUTHORIZATION |
drh | e22a334 | 2003-04-22 20:30:37 +0000 | [diff] [blame] | 436 | int (*xAuth)(void*,int,const char*,const char*,const char*,const char*); |
| 437 | /* Access authorization function */ |
drh | ed6c867 | 2003-01-12 18:02:16 +0000 | [diff] [blame] | 438 | void *pAuthArg; /* 1st argument to the access auth function */ |
| 439 | #endif |
danielk1977 | 348bb5d | 2003-10-18 09:37:26 +0000 | [diff] [blame] | 440 | #ifndef SQLITE_OMIT_PROGRESS_CALLBACK |
| 441 | int (*xProgress)(void *); /* The progress callback */ |
| 442 | void *pProgressArg; /* Argument to the progress callback */ |
| 443 | int nProgressOps; /* Number of opcodes for progress callback */ |
| 444 | #endif |
danielk1977 | 6622cce | 2004-05-20 11:00:52 +0000 | [diff] [blame] | 445 | int errCode; /* Most recent error code (SQLITE_*) */ |
danielk1977 | b1bc953 | 2004-05-22 03:05:33 +0000 | [diff] [blame] | 446 | u8 enc; /* Text encoding for this database. */ |
danielk1977 | 1d850a7 | 2004-05-31 08:26:49 +0000 | [diff] [blame] | 447 | u8 autoCommit; /* The auto-commit flag. */ |
danielk1977 | 7cedc8d | 2004-06-10 10:50:08 +0000 | [diff] [blame] | 448 | void(*xCollNeeded)(void*,sqlite3*,int eTextRep,const char*); |
| 449 | void(*xCollNeeded16)(void*,sqlite3*,int eTextRep,const void*); |
| 450 | void *pCollNeededArg; |
danielk1977 | bfd6cce | 2004-06-18 04:24:54 +0000 | [diff] [blame] | 451 | sqlite3_value *pValue; /* Value used for transient conversions */ |
| 452 | sqlite3_value *pErr; /* Most recent error message */ |
danielk1977 | bfd6cce | 2004-06-18 04:24:54 +0000 | [diff] [blame] | 453 | char *zErrMsg; /* Most recent error message (UTF-8 encoded) */ |
drh | b6c2989 | 2004-11-22 19:12:19 +0000 | [diff] [blame] | 454 | char *zErrMsg16; /* Most recent error message (UTF-16 encoded) */ |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 455 | }; |
| 456 | |
| 457 | /* |
drh | 8bf8dc9 | 2003-05-17 17:35:10 +0000 | [diff] [blame] | 458 | ** Possible values for the sqlite.flags and or Db.flags fields. |
| 459 | ** |
| 460 | ** On sqlite.flags, the SQLITE_InTrans value means that we have |
| 461 | ** executed a BEGIN. On Db.flags, SQLITE_InTrans means a statement |
| 462 | ** transaction is active on that particular database file. |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 463 | */ |
drh | 5e00f6c | 2001-09-13 13:46:56 +0000 | [diff] [blame] | 464 | #define SQLITE_VdbeTrace 0x00000001 /* True to trace VDBE execution */ |
| 465 | #define SQLITE_Initialized 0x00000002 /* True after initialization */ |
| 466 | #define SQLITE_Interrupt 0x00000004 /* Cancel current operation */ |
| 467 | #define SQLITE_InTrans 0x00000008 /* True if in a transaction */ |
| 468 | #define SQLITE_InternChanges 0x00000010 /* Uncommitted Hash table changes */ |
drh | 382c024 | 2001-10-06 16:33:02 +0000 | [diff] [blame] | 469 | #define SQLITE_FullColNames 0x00000020 /* Show full column names on SELECT */ |
drh | fcabd46 | 2004-02-20 14:50:58 +0000 | [diff] [blame] | 470 | #define SQLITE_ShortColNames 0x00000040 /* Show short columns names */ |
| 471 | #define SQLITE_CountRows 0x00000080 /* Count rows changed by INSERT, */ |
drh | 1bee3d7 | 2001-10-15 00:44:35 +0000 | [diff] [blame] | 472 | /* DELETE, or UPDATE and return */ |
| 473 | /* the count using a callback. */ |
drh | fcabd46 | 2004-02-20 14:50:58 +0000 | [diff] [blame] | 474 | #define SQLITE_NullCallback 0x00000100 /* Invoke the callback once if the */ |
drh | 6a53534 | 2001-10-19 16:44:56 +0000 | [diff] [blame] | 475 | /* result set is empty */ |
drh | 35d4c2f | 2004-06-10 01:30:59 +0000 | [diff] [blame] | 476 | #define SQLITE_SqlTrace 0x00000200 /* Debug print SQL as it executes */ |
| 477 | #define SQLITE_VdbeListing 0x00000400 /* Debug listings of VDBE programs */ |
drh | f404083 | 2004-10-22 20:29:21 +0000 | [diff] [blame] | 478 | #define SQLITE_WriteSchema 0x00000800 /* OK to update SQLITE_MASTER */ |
drh | 7bec505 | 2005-02-06 02:45:41 +0000 | [diff] [blame] | 479 | #define SQLITE_NoReadlock 0x00001000 /* Readlocks are omitted when |
| 480 | ** accessing read-only databases */ |
drh | 58b9576 | 2000-06-02 01:17:37 +0000 | [diff] [blame] | 481 | |
| 482 | /* |
drh | 247be43 | 2002-05-10 05:44:55 +0000 | [diff] [blame] | 483 | ** Possible values for the sqlite.magic field. |
| 484 | ** The numbers are obtained at random and have no special meaning, other |
| 485 | ** than being distinct from one another. |
| 486 | */ |
| 487 | #define SQLITE_MAGIC_OPEN 0xa029a697 /* Database is open */ |
| 488 | #define SQLITE_MAGIC_CLOSED 0x9f3c2d33 /* Database is closed */ |
| 489 | #define SQLITE_MAGIC_BUSY 0xf03b7906 /* Database currently in use */ |
| 490 | #define SQLITE_MAGIC_ERROR 0xb5357930 /* An SQLITE_MISUSE error occurred */ |
| 491 | |
| 492 | /* |
drh | 0bce835 | 2002-02-28 00:41:10 +0000 | [diff] [blame] | 493 | ** Each SQL function is defined by an instance of the following |
| 494 | ** structure. A pointer to this structure is stored in the sqlite.aFunc |
drh | 8e0a2f9 | 2002-02-23 23:45:45 +0000 | [diff] [blame] | 495 | ** hash table. When multiple functions have the same name, the hash table |
| 496 | ** points to a linked list of these structures. |
drh | 2803757 | 2000-08-02 13:47:41 +0000 | [diff] [blame] | 497 | */ |
drh | 0bce835 | 2002-02-28 00:41:10 +0000 | [diff] [blame] | 498 | struct FuncDef { |
drh | f9b596e | 2004-05-26 16:54:42 +0000 | [diff] [blame] | 499 | char *zName; /* SQL name of the function */ |
| 500 | int nArg; /* Number of arguments. -1 means unlimited */ |
danielk1977 | d812336 | 2004-06-12 09:25:12 +0000 | [diff] [blame] | 501 | u8 iPrefEnc; /* Preferred text encoding (SQLITE_UTF8, 16LE, 16BE) */ |
drh | f9b596e | 2004-05-26 16:54:42 +0000 | [diff] [blame] | 502 | void *pUserData; /* User data parameter */ |
| 503 | FuncDef *pNext; /* Next function with same name */ |
| 504 | void (*xFunc)(sqlite3_context*,int,sqlite3_value**); /* Regular function */ |
| 505 | void (*xStep)(sqlite3_context*,int,sqlite3_value**); /* Aggregate step */ |
| 506 | void (*xFinalize)(sqlite3_context*); /* Aggregate finializer */ |
danielk1977 | dc1bdc4 | 2004-06-11 10:51:27 +0000 | [diff] [blame] | 507 | u8 needCollSeq; /* True if sqlite3GetFuncCollSeq() might be called */ |
drh | 8e0a2f9 | 2002-02-23 23:45:45 +0000 | [diff] [blame] | 508 | }; |
drh | 2803757 | 2000-08-02 13:47:41 +0000 | [diff] [blame] | 509 | |
| 510 | /* |
drh | 967e8b7 | 2000-06-21 13:59:10 +0000 | [diff] [blame] | 511 | ** information about each column of an SQL table is held in an instance |
drh | 7020f65 | 2000-06-03 18:06:52 +0000 | [diff] [blame] | 512 | ** of this structure. |
| 513 | */ |
| 514 | struct Column { |
drh | 967e8b7 | 2000-06-21 13:59:10 +0000 | [diff] [blame] | 515 | char *zName; /* Name of this column */ |
danielk1977 | 7977a17 | 2004-11-09 12:44:37 +0000 | [diff] [blame] | 516 | Expr *pDflt; /* Default value of this column */ |
drh | 382c024 | 2001-10-06 16:33:02 +0000 | [diff] [blame] | 517 | char *zType; /* Data type for this column */ |
drh | a9fd84b | 2004-05-18 23:21:35 +0000 | [diff] [blame] | 518 | CollSeq *pColl; /* Collating sequence. If NULL, use the default */ |
drh | 4a32431 | 2001-12-21 14:30:42 +0000 | [diff] [blame] | 519 | u8 notNull; /* True if there is a NOT NULL constraint */ |
drh | 78100cc | 2003-08-23 22:40:53 +0000 | [diff] [blame] | 520 | u8 isPrimKey; /* True if this column is part of the PRIMARY KEY */ |
danielk1977 | a37cdde | 2004-05-16 11:15:36 +0000 | [diff] [blame] | 521 | char affinity; /* One of the SQLITE_AFF_... values */ |
drh | 7020f65 | 2000-06-03 18:06:52 +0000 | [diff] [blame] | 522 | }; |
| 523 | |
| 524 | /* |
drh | a9fd84b | 2004-05-18 23:21:35 +0000 | [diff] [blame] | 525 | ** A "Collating Sequence" is defined by an instance of the following |
danielk1977 | 0202b29 | 2004-06-09 09:55:16 +0000 | [diff] [blame] | 526 | ** structure. Conceptually, a collating sequence consists of a name and |
| 527 | ** a comparison routine that defines the order of that sequence. |
drh | a9fd84b | 2004-05-18 23:21:35 +0000 | [diff] [blame] | 528 | ** |
danielk1977 | 0202b29 | 2004-06-09 09:55:16 +0000 | [diff] [blame] | 529 | ** There may two seperate implementations of the collation function, one |
| 530 | ** that processes text in UTF-8 encoding (CollSeq.xCmp) and another that |
| 531 | ** processes text encoded in UTF-16 (CollSeq.xCmp16), using the machine |
| 532 | ** native byte order. When a collation sequence is invoked, SQLite selects |
| 533 | ** the version that will require the least expensive encoding |
| 534 | ** transalations, if any. |
| 535 | ** |
| 536 | ** The CollSeq.pUser member variable is an extra parameter that passed in |
| 537 | ** as the first argument to the UTF-8 comparison function, xCmp. |
| 538 | ** CollSeq.pUser16 is the equivalent for the UTF-16 comparison function, |
| 539 | ** xCmp16. |
| 540 | ** |
| 541 | ** If both CollSeq.xCmp and CollSeq.xCmp16 are NULL, it means that the |
| 542 | ** collating sequence is undefined. Indices built on an undefined |
| 543 | ** collating sequence may not be read or written. |
drh | a9fd84b | 2004-05-18 23:21:35 +0000 | [diff] [blame] | 544 | */ |
| 545 | struct CollSeq { |
danielk1977 | 0202b29 | 2004-06-09 09:55:16 +0000 | [diff] [blame] | 546 | char *zName; /* Name of the collating sequence, UTF-8 encoded */ |
danielk1977 | 466be56 | 2004-06-10 02:16:01 +0000 | [diff] [blame] | 547 | u8 enc; /* Text encoding handled by xCmp() */ |
drh | a9fd84b | 2004-05-18 23:21:35 +0000 | [diff] [blame] | 548 | void *pUser; /* First argument to xCmp() */ |
danielk1977 | 0202b29 | 2004-06-09 09:55:16 +0000 | [diff] [blame] | 549 | int (*xCmp)(void*,int, const void*, int, const void*); |
drh | a9fd84b | 2004-05-18 23:21:35 +0000 | [diff] [blame] | 550 | }; |
| 551 | |
| 552 | /* |
drh | d3d39e9 | 2004-05-20 22:16:29 +0000 | [diff] [blame] | 553 | ** A sort order can be either ASC or DESC. |
drh | 8e2ca02 | 2002-06-17 17:07:19 +0000 | [diff] [blame] | 554 | */ |
drh | 8e2ca02 | 2002-06-17 17:07:19 +0000 | [diff] [blame] | 555 | #define SQLITE_SO_ASC 0 /* Sort in ascending order */ |
drh | d3d39e9 | 2004-05-20 22:16:29 +0000 | [diff] [blame] | 556 | #define SQLITE_SO_DESC 1 /* Sort in ascending order */ |
drh | 8e2ca02 | 2002-06-17 17:07:19 +0000 | [diff] [blame] | 557 | |
| 558 | /* |
danielk1977 | a37cdde | 2004-05-16 11:15:36 +0000 | [diff] [blame] | 559 | ** Column affinity types. |
| 560 | */ |
| 561 | #define SQLITE_AFF_INTEGER 'i' |
| 562 | #define SQLITE_AFF_NUMERIC 'n' |
| 563 | #define SQLITE_AFF_TEXT 't' |
| 564 | #define SQLITE_AFF_NONE 'o' |
| 565 | |
| 566 | |
| 567 | /* |
drh | 22f70c3 | 2002-02-18 01:17:00 +0000 | [diff] [blame] | 568 | ** Each SQL table is represented in memory by an instance of the |
| 569 | ** following structure. |
| 570 | ** |
drh | d24cc42 | 2003-03-27 12:51:24 +0000 | [diff] [blame] | 571 | ** Table.zName is the name of the table. The case of the original |
drh | 22f70c3 | 2002-02-18 01:17:00 +0000 | [diff] [blame] | 572 | ** CREATE TABLE statement is stored, but case is not significant for |
| 573 | ** comparisons. |
| 574 | ** |
drh | d24cc42 | 2003-03-27 12:51:24 +0000 | [diff] [blame] | 575 | ** Table.nCol is the number of columns in this table. Table.aCol is a |
drh | 22f70c3 | 2002-02-18 01:17:00 +0000 | [diff] [blame] | 576 | ** pointer to an array of Column structures, one for each column. |
| 577 | ** |
drh | d24cc42 | 2003-03-27 12:51:24 +0000 | [diff] [blame] | 578 | ** If the table has an INTEGER PRIMARY KEY, then Table.iPKey is the index of |
| 579 | ** the column that is that key. Otherwise Table.iPKey is negative. Note |
drh | 22f70c3 | 2002-02-18 01:17:00 +0000 | [diff] [blame] | 580 | ** that the datatype of the PRIMARY KEY must be INTEGER for this field to |
| 581 | ** be set. An INTEGER PRIMARY KEY is used as the rowid for each row of |
| 582 | ** the table. If a table has no INTEGER PRIMARY KEY, then a random rowid |
drh | d24cc42 | 2003-03-27 12:51:24 +0000 | [diff] [blame] | 583 | ** is generated for each row of the table. Table.hasPrimKey is true if |
drh | 22f70c3 | 2002-02-18 01:17:00 +0000 | [diff] [blame] | 584 | ** the table has any PRIMARY KEY, INTEGER or otherwise. |
| 585 | ** |
drh | d24cc42 | 2003-03-27 12:51:24 +0000 | [diff] [blame] | 586 | ** Table.tnum is the page number for the root BTree page of the table in the |
| 587 | ** database file. If Table.iDb is the index of the database table backend |
| 588 | ** in sqlite.aDb[]. 0 is for the main database and 1 is for the file that |
| 589 | ** holds temporary tables and indices. If Table.isTransient |
drh | 22f70c3 | 2002-02-18 01:17:00 +0000 | [diff] [blame] | 590 | ** is true, then the table is stored in a file that is automatically deleted |
drh | d24cc42 | 2003-03-27 12:51:24 +0000 | [diff] [blame] | 591 | ** when the VDBE cursor to the table is closed. In this case Table.tnum |
drh | 22f70c3 | 2002-02-18 01:17:00 +0000 | [diff] [blame] | 592 | ** refers VDBE cursor number that holds the table open, not to the root |
| 593 | ** page number. Transient tables are used to hold the results of a |
| 594 | ** sub-query that appears instead of a real table name in the FROM clause |
| 595 | ** of a SELECT statement. |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 596 | */ |
| 597 | struct Table { |
drh | 967e8b7 | 2000-06-21 13:59:10 +0000 | [diff] [blame] | 598 | char *zName; /* Name of the table */ |
drh | 967e8b7 | 2000-06-21 13:59:10 +0000 | [diff] [blame] | 599 | int nCol; /* Number of columns in this table */ |
| 600 | Column *aCol; /* Information about each column */ |
drh | c839258 | 2001-12-31 02:48:51 +0000 | [diff] [blame] | 601 | int iPKey; /* If not less then 0, use aCol[iPKey] as the primary key */ |
drh | 967e8b7 | 2000-06-21 13:59:10 +0000 | [diff] [blame] | 602 | Index *pIndex; /* List of SQL indexes on this table. */ |
drh | 22f70c3 | 2002-02-18 01:17:00 +0000 | [diff] [blame] | 603 | int tnum; /* Root BTree node for this table (see note above) */ |
drh | a76b5df | 2002-02-23 02:32:10 +0000 | [diff] [blame] | 604 | Select *pSelect; /* NULL for tables. Points to definition if a view. */ |
drh | 717e640 | 2001-09-27 03:22:32 +0000 | [diff] [blame] | 605 | u8 readOnly; /* True if this table should not be written by the user */ |
drh | d24cc42 | 2003-03-27 12:51:24 +0000 | [diff] [blame] | 606 | u8 iDb; /* Index into sqlite.aDb[] of the backend for this table */ |
drh | 22f70c3 | 2002-02-18 01:17:00 +0000 | [diff] [blame] | 607 | u8 isTransient; /* True if automatically deleted when VDBE finishes */ |
drh | 4a32431 | 2001-12-21 14:30:42 +0000 | [diff] [blame] | 608 | u8 hasPrimKey; /* True if there exists a primary key */ |
drh | 9cfcf5d | 2002-01-29 18:41:24 +0000 | [diff] [blame] | 609 | u8 keyConf; /* What to do in case of uniqueness conflict on iPKey */ |
drh | 205f48e | 2004-11-05 00:43:11 +0000 | [diff] [blame] | 610 | u8 autoInc; /* True if the integer primary key is autoincrement */ |
danielk1977 | c3f9bad | 2002-05-15 08:30:12 +0000 | [diff] [blame] | 611 | Trigger *pTrigger; /* List of SQL triggers on this table */ |
drh | c2eef3b | 2002-08-31 18:53:06 +0000 | [diff] [blame] | 612 | FKey *pFKey; /* Linked list of all foreign keys in this table */ |
danielk1977 | 3d1bfea | 2004-05-14 11:00:53 +0000 | [diff] [blame] | 613 | char *zColAff; /* String defining the affinity of each column */ |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 614 | }; |
| 615 | |
| 616 | /* |
drh | c2eef3b | 2002-08-31 18:53:06 +0000 | [diff] [blame] | 617 | ** Each foreign key constraint is an instance of the following structure. |
| 618 | ** |
| 619 | ** A foreign key is associated with two tables. The "from" table is |
| 620 | ** the table that contains the REFERENCES clause that creates the foreign |
| 621 | ** key. The "to" table is the table that is named in the REFERENCES clause. |
| 622 | ** Consider this example: |
| 623 | ** |
| 624 | ** CREATE TABLE ex1( |
| 625 | ** a INTEGER PRIMARY KEY, |
| 626 | ** b INTEGER CONSTRAINT fk1 REFERENCES ex2(x) |
| 627 | ** ); |
| 628 | ** |
| 629 | ** For foreign key "fk1", the from-table is "ex1" and the to-table is "ex2". |
| 630 | ** |
| 631 | ** Each REFERENCES clause generates an instance of the following structure |
| 632 | ** which is attached to the from-table. The to-table need not exist when |
| 633 | ** the from-table is created. The existance of the to-table is not checked |
| 634 | ** until an attempt is made to insert data into the from-table. |
| 635 | ** |
drh | ea1ba17 | 2003-04-20 00:00:23 +0000 | [diff] [blame] | 636 | ** The sqlite.aFKey hash table stores pointers to this structure |
drh | c2eef3b | 2002-08-31 18:53:06 +0000 | [diff] [blame] | 637 | ** given the name of a to-table. For each to-table, all foreign keys |
| 638 | ** associated with that table are on a linked list using the FKey.pNextTo |
| 639 | ** field. |
| 640 | */ |
| 641 | struct FKey { |
| 642 | Table *pFrom; /* The table that constains the REFERENCES clause */ |
| 643 | FKey *pNextFrom; /* Next foreign key in pFrom */ |
| 644 | char *zTo; /* Name of table that the key points to */ |
| 645 | FKey *pNextTo; /* Next foreign key that points to zTo */ |
| 646 | int nCol; /* Number of columns in this key */ |
| 647 | struct sColMap { /* Mapping of columns in pFrom to columns in zTo */ |
| 648 | int iFrom; /* Index of column in pFrom */ |
| 649 | char *zCol; /* Name of column in zTo. If 0 use PRIMARY KEY */ |
| 650 | } *aCol; /* One entry for each of nCol column s */ |
| 651 | u8 isDeferred; /* True if constraint checking is deferred till COMMIT */ |
| 652 | u8 updateConf; /* How to resolve conflicts that occur on UPDATE */ |
| 653 | u8 deleteConf; /* How to resolve conflicts that occur on DELETE */ |
| 654 | u8 insertConf; /* How to resolve conflicts that occur on INSERT */ |
| 655 | }; |
| 656 | |
| 657 | /* |
| 658 | ** SQLite supports many different ways to resolve a contraint |
drh | 22f70c3 | 2002-02-18 01:17:00 +0000 | [diff] [blame] | 659 | ** error. ROLLBACK processing means that a constraint violation |
drh | 0bd1f4e | 2002-06-06 18:54:39 +0000 | [diff] [blame] | 660 | ** causes the operation in process to fail and for the current transaction |
drh | 1c92853 | 2002-01-31 15:54:21 +0000 | [diff] [blame] | 661 | ** to be rolled back. ABORT processing means the operation in process |
| 662 | ** fails and any prior changes from that one operation are backed out, |
| 663 | ** but the transaction is not rolled back. FAIL processing means that |
| 664 | ** the operation in progress stops and returns an error code. But prior |
| 665 | ** changes due to the same operation are not backed out and no rollback |
| 666 | ** occurs. IGNORE means that the particular row that caused the constraint |
| 667 | ** error is not inserted or updated. Processing continues and no error |
| 668 | ** is returned. REPLACE means that preexisting database rows that caused |
| 669 | ** a UNIQUE constraint violation are removed so that the new insert or |
| 670 | ** update can proceed. Processing continues and no error is reported. |
drh | c2eef3b | 2002-08-31 18:53:06 +0000 | [diff] [blame] | 671 | ** |
| 672 | ** RESTRICT, SETNULL, and CASCADE actions apply only to foreign keys. |
| 673 | ** RESTRICT is the same as ABORT for IMMEDIATE foreign keys and the |
| 674 | ** same as ROLLBACK for DEFERRED keys. SETNULL means that the foreign |
| 675 | ** key is set to NULL. CASCADE means that a DELETE or UPDATE of the |
| 676 | ** referenced table row is propagated into the row that holds the |
| 677 | ** foreign key. |
drh | 1c92853 | 2002-01-31 15:54:21 +0000 | [diff] [blame] | 678 | ** |
drh | 968af52 | 2003-02-11 14:55:40 +0000 | [diff] [blame] | 679 | ** The following symbolic values are used to record which type |
drh | 1c92853 | 2002-01-31 15:54:21 +0000 | [diff] [blame] | 680 | ** of action to take. |
drh | 9cfcf5d | 2002-01-29 18:41:24 +0000 | [diff] [blame] | 681 | */ |
drh | 1c92853 | 2002-01-31 15:54:21 +0000 | [diff] [blame] | 682 | #define OE_None 0 /* There is no constraint to check */ |
| 683 | #define OE_Rollback 1 /* Fail the operation and rollback the transaction */ |
| 684 | #define OE_Abort 2 /* Back out changes but do no rollback transaction */ |
| 685 | #define OE_Fail 3 /* Stop the operation but leave all prior changes */ |
| 686 | #define OE_Ignore 4 /* Ignore the error. Do not do the INSERT or UPDATE */ |
| 687 | #define OE_Replace 5 /* Delete existing record, then do INSERT or UPDATE */ |
drh | c2eef3b | 2002-08-31 18:53:06 +0000 | [diff] [blame] | 688 | |
| 689 | #define OE_Restrict 6 /* OE_Abort for IMMEDIATE, OE_Rollback for DEFERRED */ |
| 690 | #define OE_SetNull 7 /* Set the foreign key value to NULL */ |
| 691 | #define OE_SetDflt 8 /* Set the foreign key value to its default */ |
| 692 | #define OE_Cascade 9 /* Cascade the changes */ |
| 693 | |
| 694 | #define OE_Default 99 /* Do whatever the default action is */ |
drh | 9cfcf5d | 2002-01-29 18:41:24 +0000 | [diff] [blame] | 695 | |
drh | d3d39e9 | 2004-05-20 22:16:29 +0000 | [diff] [blame] | 696 | |
| 697 | /* |
| 698 | ** An instance of the following structure is passed as the first |
| 699 | ** argument to sqlite3VdbeKeyCompare and is used to control the |
| 700 | ** comparison of the two index keys. |
| 701 | ** |
| 702 | ** If the KeyInfo.incrKey value is true and the comparison would |
| 703 | ** otherwise be equal, then return a result as if the second key larger. |
| 704 | */ |
| 705 | struct KeyInfo { |
danielk1977 | b1bc953 | 2004-05-22 03:05:33 +0000 | [diff] [blame] | 706 | u8 enc; /* Text encoding - one of the TEXT_Utf* values */ |
drh | d3d39e9 | 2004-05-20 22:16:29 +0000 | [diff] [blame] | 707 | u8 incrKey; /* Increase 2nd key by epsilon before comparison */ |
| 708 | int nField; /* Number of entries in aColl[] */ |
drh | ffbc308 | 2004-05-21 01:29:06 +0000 | [diff] [blame] | 709 | u8 *aSortOrder; /* If defined an aSortOrder[i] is true, sort DESC */ |
drh | d3d39e9 | 2004-05-20 22:16:29 +0000 | [diff] [blame] | 710 | CollSeq *aColl[1]; /* Collating sequence for each term of the key */ |
| 711 | }; |
| 712 | |
drh | 9cfcf5d | 2002-01-29 18:41:24 +0000 | [diff] [blame] | 713 | /* |
drh | 66b89c8 | 2000-11-28 20:47:17 +0000 | [diff] [blame] | 714 | ** Each SQL index is represented in memory by an |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 715 | ** instance of the following structure. |
drh | 967e8b7 | 2000-06-21 13:59:10 +0000 | [diff] [blame] | 716 | ** |
| 717 | ** The columns of the table that are to be indexed are described |
| 718 | ** by the aiColumn[] field of this structure. For example, suppose |
| 719 | ** we have the following table and index: |
| 720 | ** |
| 721 | ** CREATE TABLE Ex1(c1 int, c2 int, c3 text); |
| 722 | ** CREATE INDEX Ex2 ON Ex1(c3,c1); |
| 723 | ** |
| 724 | ** In the Table structure describing Ex1, nCol==3 because there are |
| 725 | ** three columns in the table. In the Index structure describing |
| 726 | ** Ex2, nColumn==2 since 2 of the 3 columns of Ex1 are indexed. |
| 727 | ** The value of aiColumn is {2, 0}. aiColumn[0]==2 because the |
| 728 | ** first column to be indexed (c3) has an index of 2 in Ex1.aCol[]. |
| 729 | ** The second column to be indexed (c1) has an index of 0 in |
| 730 | ** Ex1.aCol[], hence Ex2.aiColumn[1]==0. |
drh | ea1ba17 | 2003-04-20 00:00:23 +0000 | [diff] [blame] | 731 | ** |
| 732 | ** The Index.onError field determines whether or not the indexed columns |
| 733 | ** must be unique and what to do if they are not. When Index.onError=OE_None, |
| 734 | ** it means this is not a unique index. Otherwise it is a unique index |
| 735 | ** and the value of Index.onError indicate the which conflict resolution |
| 736 | ** algorithm to employ whenever an attempt is made to insert a non-unique |
| 737 | ** element. |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 738 | */ |
| 739 | struct Index { |
drh | 967e8b7 | 2000-06-21 13:59:10 +0000 | [diff] [blame] | 740 | char *zName; /* Name of this index */ |
drh | 967e8b7 | 2000-06-21 13:59:10 +0000 | [diff] [blame] | 741 | int nColumn; /* Number of columns in the table used by this index */ |
| 742 | int *aiColumn; /* Which columns are used by this index. 1st is 0 */ |
| 743 | Table *pTable; /* The SQL table being indexed */ |
drh | be0072d | 2001-09-13 14:46:09 +0000 | [diff] [blame] | 744 | int tnum; /* Page containing root of this index in database file */ |
drh | 9cfcf5d | 2002-01-29 18:41:24 +0000 | [diff] [blame] | 745 | u8 onError; /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */ |
drh | 485b39b | 2002-07-13 03:11:52 +0000 | [diff] [blame] | 746 | u8 autoIndex; /* True if is automatically created (ex: by UNIQUE) */ |
drh | d24cc42 | 2003-03-27 12:51:24 +0000 | [diff] [blame] | 747 | u8 iDb; /* Index in sqlite.aDb[] of where this index is stored */ |
danielk1977 | a37cdde | 2004-05-16 11:15:36 +0000 | [diff] [blame] | 748 | char *zColAff; /* String defining the affinity of each column */ |
drh | 967e8b7 | 2000-06-21 13:59:10 +0000 | [diff] [blame] | 749 | Index *pNext; /* The next index associated with the same table */ |
drh | d3d39e9 | 2004-05-20 22:16:29 +0000 | [diff] [blame] | 750 | KeyInfo keyInfo; /* Info on how to order keys. MUST BE LAST */ |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 751 | }; |
| 752 | |
| 753 | /* |
| 754 | ** Each token coming out of the lexer is an instance of |
drh | 4b59ab5 | 2002-08-24 18:24:51 +0000 | [diff] [blame] | 755 | ** this structure. Tokens are also used as part of an expression. |
drh | 4efc475 | 2004-01-16 15:55:37 +0000 | [diff] [blame] | 756 | ** |
| 757 | ** Note if Token.z==0 then Token.dyn and Token.n are undefined and |
| 758 | ** may contain random values. Do not make any assuptions about Token.dyn |
| 759 | ** and Token.n when Token.z==0. |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 760 | */ |
| 761 | struct Token { |
drh | 4c755c0 | 2004-08-08 20:22:17 +0000 | [diff] [blame] | 762 | const unsigned char *z; /* Text of the token. Not NULL-terminated! */ |
| 763 | unsigned dyn : 1; /* True for malloced memory, false for static */ |
| 764 | unsigned n : 31; /* Number of characters in this token */ |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 765 | }; |
| 766 | |
| 767 | /* |
| 768 | ** Each node of an expression in the parse tree is an instance |
drh | 22f70c3 | 2002-02-18 01:17:00 +0000 | [diff] [blame] | 769 | ** of this structure. |
| 770 | ** |
| 771 | ** Expr.op is the opcode. The integer parser token codes are reused |
| 772 | ** as opcodes here. For example, the parser defines TK_GE to be an integer |
| 773 | ** code representing the ">=" operator. This same integer code is reused |
| 774 | ** to represent the greater-than-or-equal-to operator in the expression |
| 775 | ** tree. |
| 776 | ** |
| 777 | ** Expr.pRight and Expr.pLeft are subexpressions. Expr.pList is a list |
| 778 | ** of argument if the expression is a function. |
| 779 | ** |
drh | 4b59ab5 | 2002-08-24 18:24:51 +0000 | [diff] [blame] | 780 | ** Expr.token is the operator token for this node. For some expressions |
| 781 | ** that have subexpressions, Expr.token can be the complete text that gave |
| 782 | ** rise to the Expr. In the latter case, the token is marked as being |
| 783 | ** a compound token. |
drh | 22f70c3 | 2002-02-18 01:17:00 +0000 | [diff] [blame] | 784 | ** |
| 785 | ** An expression of the form ID or ID.ID refers to a column in a table. |
| 786 | ** For such expressions, Expr.op is set to TK_COLUMN and Expr.iTable is |
| 787 | ** the integer cursor number of a VDBE cursor pointing to that table and |
| 788 | ** Expr.iColumn is the column number for the specific column. If the |
| 789 | ** expression is used as a result in an aggregate SELECT, then the |
| 790 | ** value is also stored in the Expr.iAgg column in the aggregate so that |
| 791 | ** it can be accessed after all aggregates are computed. |
| 792 | ** |
| 793 | ** If the expression is a function, the Expr.iTable is an integer code |
drh | 7c972de | 2003-09-06 22:18:07 +0000 | [diff] [blame] | 794 | ** representing which function. If the expression is an unbound variable |
| 795 | ** marker (a question mark character '?' in the original SQL) then the |
| 796 | ** Expr.iTable holds the index number for that variable. |
drh | 22f70c3 | 2002-02-18 01:17:00 +0000 | [diff] [blame] | 797 | ** |
drh | 1398ad3 | 2005-01-19 23:24:50 +0000 | [diff] [blame] | 798 | ** If the expression is a subquery then Expr.iColumn holds an integer |
| 799 | ** register number containing the result of the subquery. If the |
| 800 | ** subquery gives a constant result, then iTable is -1. If the subquery |
| 801 | ** gives a different answer at different times during statement processing |
| 802 | ** then iTable is the address of a subroutine that computes the subquery. |
| 803 | ** |
drh | 22f70c3 | 2002-02-18 01:17:00 +0000 | [diff] [blame] | 804 | ** The Expr.pSelect field points to a SELECT statement. The SELECT might |
| 805 | ** be the right operand of an IN operator. Or, if a scalar SELECT appears |
| 806 | ** in an expression the opcode is TK_SELECT and Expr.pSelect is the only |
| 807 | ** operand. |
danielk1977 | aee18ef | 2005-03-09 12:26:50 +0000 | [diff] [blame] | 808 | ** |
| 809 | ** If the Expr is of type OP_Column, and the table it is selecting from |
| 810 | ** is a disk table or the "old.*" pseudo-table, then pTab points to the |
| 811 | ** corresponding table definition. |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 812 | */ |
| 813 | struct Expr { |
drh | 1cc093c | 2002-06-24 22:01:57 +0000 | [diff] [blame] | 814 | u8 op; /* Operation performed by this node */ |
drh | a9fd84b | 2004-05-18 23:21:35 +0000 | [diff] [blame] | 815 | char affinity; /* The affinity of the column or 0 if not a column */ |
drh | b5a20d3 | 2003-04-23 12:25:23 +0000 | [diff] [blame] | 816 | u8 iDb; /* Database referenced by this expression */ |
drh | e22a334 | 2003-04-22 20:30:37 +0000 | [diff] [blame] | 817 | u8 flags; /* Various flags. See below */ |
drh | f2bc013 | 2004-10-04 13:19:23 +0000 | [diff] [blame] | 818 | CollSeq *pColl; /* The collation type of the column or 0 */ |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 819 | Expr *pLeft, *pRight; /* Left and right subnodes */ |
drh | d99f706 | 2002-06-08 23:25:08 +0000 | [diff] [blame] | 820 | ExprList *pList; /* A list of expressions used as function arguments |
| 821 | ** or in "<expr> IN (<expr-list)" */ |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 822 | Token token; /* An operand token */ |
drh | 6977fea | 2002-10-22 23:38:04 +0000 | [diff] [blame] | 823 | Token span; /* Complete text of the expression */ |
drh | 967e8b7 | 2000-06-21 13:59:10 +0000 | [diff] [blame] | 824 | int iTable, iColumn; /* When op==TK_COLUMN, then this expr node means the |
drh | 8e2ca02 | 2002-06-17 17:07:19 +0000 | [diff] [blame] | 825 | ** iColumn-th field of the iTable-th table. */ |
danielk1977 | a58fdfb | 2005-02-08 07:50:40 +0000 | [diff] [blame] | 826 | int iAgg; /* When op==TK_COLUMN and pParse->fillAgg==FALSE, pull |
drh | 967e8b7 | 2000-06-21 13:59:10 +0000 | [diff] [blame] | 827 | ** result from the iAgg-th element of the aggregator */ |
danielk1977 | a58fdfb | 2005-02-08 07:50:40 +0000 | [diff] [blame] | 828 | int iAggCtx; /* The value to pass as P1 of OP_AggGet. */ |
drh | d99f706 | 2002-06-08 23:25:08 +0000 | [diff] [blame] | 829 | Select *pSelect; /* When the expression is a sub-select. Also the |
| 830 | ** right side of "<expr> IN (<select>)" */ |
danielk1977 | aee18ef | 2005-03-09 12:26:50 +0000 | [diff] [blame] | 831 | Table *pTab; /* Table for OP_Column expressions. */ |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 832 | }; |
| 833 | |
| 834 | /* |
drh | 1f16230 | 2002-10-27 19:35:33 +0000 | [diff] [blame] | 835 | ** The following are the meanings of bits in the Expr.flags field. |
| 836 | */ |
| 837 | #define EP_FromJoin 0x0001 /* Originated in ON or USING clause of a join */ |
drh | 626a879 | 2005-01-17 22:08:19 +0000 | [diff] [blame] | 838 | #define EP_Agg 0x0002 /* Contains one or more aggregate functions */ |
| 839 | #define EP_Resolved 0x0004 /* IDs have been resolved to COLUMNs */ |
drh | 73b211a | 2005-01-18 04:00:42 +0000 | [diff] [blame] | 840 | #define EP_Error 0x0008 /* Expression contains one or more errors */ |
drh | 51522cd | 2005-01-20 13:36:19 +0000 | [diff] [blame] | 841 | #define EP_Not 0x0010 /* Operator preceeded by NOT */ |
danielk1977 | b3bce66 | 2005-01-29 08:32:43 +0000 | [diff] [blame] | 842 | #define EP_VarSelect 0x0020 /* pSelect is correlated, not constant */ |
drh | 1f16230 | 2002-10-27 19:35:33 +0000 | [diff] [blame] | 843 | |
| 844 | /* |
| 845 | ** These macros can be used to test, set, or clear bits in the |
| 846 | ** Expr.flags field. |
| 847 | */ |
| 848 | #define ExprHasProperty(E,P) (((E)->flags&(P))==(P)) |
| 849 | #define ExprHasAnyProperty(E,P) (((E)->flags&(P))!=0) |
| 850 | #define ExprSetProperty(E,P) (E)->flags|=(P) |
| 851 | #define ExprClearProperty(E,P) (E)->flags&=~(P) |
| 852 | |
| 853 | /* |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 854 | ** A list of expressions. Each expression may optionally have a |
| 855 | ** name. An expr/name combination can be used in several ways, such |
| 856 | ** as the list of "expr AS ID" fields following a "SELECT" or in the |
| 857 | ** list of "ID = expr" items in an UPDATE. A list of expressions can |
drh | ad3cab5 | 2002-05-24 02:04:32 +0000 | [diff] [blame] | 858 | ** also be used as the argument to a function, in which case the a.zName |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 859 | ** field is not used. |
| 860 | */ |
| 861 | struct ExprList { |
| 862 | int nExpr; /* Number of expressions on the list */ |
drh | 4305d10 | 2003-07-30 12:34:12 +0000 | [diff] [blame] | 863 | int nAlloc; /* Number of entries allocated below */ |
drh | 6d4abfb | 2001-10-22 02:58:08 +0000 | [diff] [blame] | 864 | struct ExprList_item { |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 865 | Expr *pExpr; /* The list of expressions */ |
| 866 | char *zName; /* Token associated with this expression */ |
drh | 8e2ca02 | 2002-06-17 17:07:19 +0000 | [diff] [blame] | 867 | u8 sortOrder; /* 1 for DESC or 0 for ASC */ |
| 868 | u8 isAgg; /* True if this is an aggregate like count(*) */ |
| 869 | u8 done; /* A flag to indicate when processing is finished */ |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 870 | } *a; /* One entry for each expression */ |
| 871 | }; |
| 872 | |
| 873 | /* |
drh | ad3cab5 | 2002-05-24 02:04:32 +0000 | [diff] [blame] | 874 | ** An instance of this structure can hold a simple list of identifiers, |
| 875 | ** such as the list "a,b,c" in the following statements: |
| 876 | ** |
| 877 | ** INSERT INTO t(a,b,c) VALUES ...; |
| 878 | ** CREATE INDEX idx ON t(a,b,c); |
| 879 | ** CREATE TRIGGER trig BEFORE UPDATE ON t(a,b,c) ...; |
| 880 | ** |
| 881 | ** The IdList.a.idx field is used when the IdList represents the list of |
| 882 | ** column names after a table name in an INSERT statement. In the statement |
| 883 | ** |
| 884 | ** INSERT INTO t(a,b,c) ... |
| 885 | ** |
| 886 | ** If "a" is the k-th column of table "t", then IdList.a[0].idx==k. |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 887 | */ |
| 888 | struct IdList { |
| 889 | int nId; /* Number of identifiers on the list */ |
drh | 4305d10 | 2003-07-30 12:34:12 +0000 | [diff] [blame] | 890 | int nAlloc; /* Number of entries allocated for a[] below */ |
drh | 6d4abfb | 2001-10-22 02:58:08 +0000 | [diff] [blame] | 891 | struct IdList_item { |
drh | ad3cab5 | 2002-05-24 02:04:32 +0000 | [diff] [blame] | 892 | char *zName; /* Name of the identifier */ |
drh | 967e8b7 | 2000-06-21 13:59:10 +0000 | [diff] [blame] | 893 | int idx; /* Index in some Table.aCol[] of a column named zName */ |
drh | ad3cab5 | 2002-05-24 02:04:32 +0000 | [diff] [blame] | 894 | } *a; |
| 895 | }; |
| 896 | |
| 897 | /* |
drh | 5166986 | 2004-12-18 18:40:26 +0000 | [diff] [blame] | 898 | ** The bitmask datatype defined below is used for various optimizations. |
| 899 | */ |
| 900 | typedef unsigned int Bitmask; |
| 901 | |
| 902 | /* |
drh | ad3cab5 | 2002-05-24 02:04:32 +0000 | [diff] [blame] | 903 | ** The following structure describes the FROM clause of a SELECT statement. |
| 904 | ** Each table or subquery in the FROM clause is a separate element of |
| 905 | ** the SrcList.a[] array. |
drh | d24cc42 | 2003-03-27 12:51:24 +0000 | [diff] [blame] | 906 | ** |
| 907 | ** With the addition of multiple database support, the following structure |
| 908 | ** can also be used to describe a particular table such as the table that |
| 909 | ** is modified by an INSERT, DELETE, or UPDATE statement. In standard SQL, |
| 910 | ** such a table must be a simple name: ID. But in SQLite, the table can |
| 911 | ** now be identified by a database name, a dot, then the table name: ID.ID. |
drh | ad3cab5 | 2002-05-24 02:04:32 +0000 | [diff] [blame] | 912 | */ |
| 913 | struct SrcList { |
drh | 939a16d | 2004-07-15 13:37:22 +0000 | [diff] [blame] | 914 | i16 nSrc; /* Number of tables or subqueries in the FROM clause */ |
| 915 | i16 nAlloc; /* Number of entries allocated in a[] below */ |
drh | ad3cab5 | 2002-05-24 02:04:32 +0000 | [diff] [blame] | 916 | struct SrcList_item { |
drh | 113088e | 2003-03-20 01:16:58 +0000 | [diff] [blame] | 917 | char *zDatabase; /* Name of database holding this table */ |
drh | ad3cab5 | 2002-05-24 02:04:32 +0000 | [diff] [blame] | 918 | char *zName; /* Name of the table */ |
| 919 | char *zAlias; /* The "B" part of a "A AS B" phrase. zName is the "A" */ |
drh | daffd0e | 2001-04-11 14:28:42 +0000 | [diff] [blame] | 920 | Table *pTab; /* An SQL table corresponding to zName */ |
| 921 | Select *pSelect; /* A SELECT statement used in place of a table name */ |
drh | ad3cab5 | 2002-05-24 02:04:32 +0000 | [diff] [blame] | 922 | int jointype; /* Type of join between this table and the next */ |
drh | 63eb5f2 | 2003-04-29 16:20:44 +0000 | [diff] [blame] | 923 | int iCursor; /* The VDBE cursor number used to access this table */ |
drh | ad3cab5 | 2002-05-24 02:04:32 +0000 | [diff] [blame] | 924 | Expr *pOn; /* The ON clause of a join */ |
| 925 | IdList *pUsing; /* The USING clause of a join */ |
drh | 5166986 | 2004-12-18 18:40:26 +0000 | [diff] [blame] | 926 | Bitmask colUsed; /* Bit N (1<<N) set if column N or pTab is used */ |
drh | 113088e | 2003-03-20 01:16:58 +0000 | [diff] [blame] | 927 | } a[1]; /* One entry for each identifier on the list */ |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 928 | }; |
| 929 | |
| 930 | /* |
drh | 01f3f25 | 2002-05-24 16:14:15 +0000 | [diff] [blame] | 931 | ** Permitted values of the SrcList.a.jointype field |
| 932 | */ |
| 933 | #define JT_INNER 0x0001 /* Any kind of inner or cross join */ |
| 934 | #define JT_NATURAL 0x0002 /* True for a "natural" join */ |
drh | 195e696 | 2002-05-25 00:18:20 +0000 | [diff] [blame] | 935 | #define JT_LEFT 0x0004 /* Left outer join */ |
| 936 | #define JT_RIGHT 0x0008 /* Right outer join */ |
drh | 01f3f25 | 2002-05-24 16:14:15 +0000 | [diff] [blame] | 937 | #define JT_OUTER 0x0010 /* The "OUTER" keyword is present */ |
| 938 | #define JT_ERROR 0x0020 /* unknown or unsupported join type */ |
| 939 | |
| 940 | /* |
drh | 6b56344 | 2001-11-07 16:48:26 +0000 | [diff] [blame] | 941 | ** For each nested loop in a WHERE clause implementation, the WhereInfo |
| 942 | ** structure contains a single instance of this structure. This structure |
| 943 | ** is intended to be private the the where.c module and should not be |
| 944 | ** access or modified by other modules. |
| 945 | */ |
| 946 | struct WhereLevel { |
| 947 | int iMem; /* Memory cell used by this level */ |
drh | 9012bcb | 2004-12-19 00:11:35 +0000 | [diff] [blame] | 948 | Index *pIdx; /* Index used. NULL if no index */ |
| 949 | int iTabCur; /* The VDBE cursor used to access the table */ |
| 950 | int iIdxCur; /* The VDBE cursor used to acesss pIdx */ |
drh | acf3b98 | 2005-01-03 01:27:18 +0000 | [diff] [blame] | 951 | int score; /* How well this index scored */ |
drh | 6b56344 | 2001-11-07 16:48:26 +0000 | [diff] [blame] | 952 | int brk; /* Jump here to break out of the loop */ |
| 953 | int cont; /* Jump here to continue with the next loop cycle */ |
| 954 | int op, p1, p2; /* Opcode used to terminate the loop */ |
drh | ad2d830 | 2002-05-24 20:31:36 +0000 | [diff] [blame] | 955 | int iLeftJoin; /* Memory cell used to implement LEFT OUTER JOIN */ |
| 956 | int top; /* First instruction of interior of the loop */ |
drh | d99f706 | 2002-06-08 23:25:08 +0000 | [diff] [blame] | 957 | int inOp, inP1, inP2;/* Opcode used to implement an IN operator */ |
drh | c045ec5 | 2002-12-04 20:01:06 +0000 | [diff] [blame] | 958 | int bRev; /* Do the scan in the reverse direction */ |
drh | 6b56344 | 2001-11-07 16:48:26 +0000 | [diff] [blame] | 959 | }; |
| 960 | |
| 961 | /* |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 962 | ** The WHERE clause processing routine has two halves. The |
| 963 | ** first part does the start of the WHERE loop and the second |
| 964 | ** half does the tail of the WHERE loop. An instance of |
| 965 | ** this structure is returned by the first half and passed |
| 966 | ** into the second half to give some continuity. |
| 967 | */ |
| 968 | struct WhereInfo { |
| 969 | Parse *pParse; |
drh | ad3cab5 | 2002-05-24 02:04:32 +0000 | [diff] [blame] | 970 | SrcList *pTabList; /* List of tables in the join */ |
drh | 9012bcb | 2004-12-19 00:11:35 +0000 | [diff] [blame] | 971 | int iTop; /* The very beginning of the WHERE loop */ |
drh | 19a775c | 2000-06-05 18:54:46 +0000 | [diff] [blame] | 972 | int iContinue; /* Jump here to continue with next record */ |
| 973 | int iBreak; /* Jump here to break out of the loop */ |
drh | 6b56344 | 2001-11-07 16:48:26 +0000 | [diff] [blame] | 974 | int nLevel; /* Number of nested loop */ |
| 975 | WhereLevel a[1]; /* Information about each nest loop in the WHERE */ |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 976 | }; |
| 977 | |
| 978 | /* |
danielk1977 | b3bce66 | 2005-01-29 08:32:43 +0000 | [diff] [blame] | 979 | ** A NameContext defines a context in which to resolve table and column |
| 980 | ** names. The context consists of a list of tables (the pSrcList) field and |
| 981 | ** a list of named expression (pEList). The named expression list may |
| 982 | ** be NULL. The pSrc corresponds to the FROM clause of a SELECT or |
| 983 | ** to the table being operated on by INSERT, UPDATE, or DELETE. The |
| 984 | ** pEList corresponds to the result set of a SELECT and is NULL for |
| 985 | ** other statements. |
| 986 | ** |
| 987 | ** NameContexts can be nested. When resolving names, the inner-most |
| 988 | ** context is searched first. If no match is found, the next outer |
| 989 | ** context is checked. If there is still no match, the next context |
| 990 | ** is checked. This process continues until either a match is found |
| 991 | ** or all contexts are check. When a match is found, the nRef member of |
| 992 | ** the context containing the match is incremented. |
| 993 | ** |
| 994 | ** Each subquery gets a new NameContext. The pNext field points to the |
| 995 | ** NameContext in the parent query. Thus the process of scanning the |
| 996 | ** NameContext list corresponds to searching through successively outer |
| 997 | ** subqueries looking for a match. |
| 998 | */ |
| 999 | struct NameContext { |
| 1000 | Parse *pParse; /* The parser */ |
| 1001 | SrcList *pSrcList; /* One or more tables used to resolve names */ |
| 1002 | ExprList *pEList; /* Optional list of named expressions */ |
| 1003 | int nRef; /* Number of names resolved by this context */ |
| 1004 | int nErr; /* Number of errors encountered while resolving names */ |
| 1005 | u8 allowAgg; /* Aggregate functions allowed here */ |
| 1006 | u8 hasAgg; |
| 1007 | int nDepth; /* Depth of subquery recursion. 1 for no recursion */ |
| 1008 | NameContext *pNext; /* Next outer name context. NULL for outermost */ |
| 1009 | }; |
| 1010 | |
| 1011 | /* |
drh | 9bb61fe | 2000-06-05 16:01:39 +0000 | [diff] [blame] | 1012 | ** An instance of the following structure contains all information |
| 1013 | ** needed to generate code for a single SELECT statement. |
drh | a76b5df | 2002-02-23 02:32:10 +0000 | [diff] [blame] | 1014 | ** |
drh | d11d382 | 2002-06-21 23:01:49 +0000 | [diff] [blame] | 1015 | ** nLimit is set to -1 if there is no LIMIT clause. nOffset is set to 0. |
| 1016 | ** If there is a LIMIT clause, the parser sets nLimit to the value of the |
| 1017 | ** limit and nOffset to the value of the offset (or 0 if there is not |
| 1018 | ** offset). But later on, nLimit and nOffset become the memory locations |
| 1019 | ** in the VDBE that record the limit and offset counters. |
drh | 9bb61fe | 2000-06-05 16:01:39 +0000 | [diff] [blame] | 1020 | */ |
| 1021 | struct Select { |
drh | 9bb61fe | 2000-06-05 16:01:39 +0000 | [diff] [blame] | 1022 | ExprList *pEList; /* The fields of the result */ |
drh | 7b58dae | 2003-07-20 01:16:46 +0000 | [diff] [blame] | 1023 | u8 op; /* One of: TK_UNION TK_ALL TK_INTERSECT TK_EXCEPT */ |
| 1024 | u8 isDistinct; /* True if the DISTINCT keyword is present */ |
drh | ad3cab5 | 2002-05-24 02:04:32 +0000 | [diff] [blame] | 1025 | SrcList *pSrc; /* The FROM clause */ |
drh | 9bb61fe | 2000-06-05 16:01:39 +0000 | [diff] [blame] | 1026 | Expr *pWhere; /* The WHERE clause */ |
| 1027 | ExprList *pGroupBy; /* The GROUP BY clause */ |
| 1028 | Expr *pHaving; /* The HAVING clause */ |
| 1029 | ExprList *pOrderBy; /* The ORDER BY clause */ |
drh | 967e8b7 | 2000-06-21 13:59:10 +0000 | [diff] [blame] | 1030 | Select *pPrior; /* Prior select in a compound select statement */ |
danielk1977 | a2dc3b1 | 2005-02-05 12:48:48 +0000 | [diff] [blame] | 1031 | Expr *pLimit; /* LIMIT expression. NULL means not used. */ |
| 1032 | Expr *pOffset; /* OFFSET expression. NULL means not used. */ |
drh | 7b58dae | 2003-07-20 01:16:46 +0000 | [diff] [blame] | 1033 | int iLimit, iOffset; /* Memory registers holding LIMIT & OFFSET counters */ |
danielk1977 | dc1bdc4 | 2004-06-11 10:51:27 +0000 | [diff] [blame] | 1034 | IdList **ppOpenTemp; /* OP_OpenTemp addresses used by multi-selects */ |
drh | b6c2989 | 2004-11-22 19:12:19 +0000 | [diff] [blame] | 1035 | Fetch *pFetch; /* If this stmt is part of a FETCH command */ |
danielk1977 | b3bce66 | 2005-01-29 08:32:43 +0000 | [diff] [blame] | 1036 | u8 isResolved; /* True once sqlite3SelectResolve() has run. */ |
| 1037 | u8 isAgg; /* True if this is an aggregate query */ |
drh | 9bb61fe | 2000-06-05 16:01:39 +0000 | [diff] [blame] | 1038 | }; |
| 1039 | |
| 1040 | /* |
drh | fef5208 | 2000-06-06 01:50:43 +0000 | [diff] [blame] | 1041 | ** The results of a select can be distributed in several ways. |
| 1042 | */ |
| 1043 | #define SRT_Callback 1 /* Invoke a callback with each row of result */ |
| 1044 | #define SRT_Mem 2 /* Store result in a memory cell */ |
drh | 82c3d63 | 2000-06-06 21:56:07 +0000 | [diff] [blame] | 1045 | #define SRT_Set 3 /* Store result as unique keys in a table */ |
| 1046 | #define SRT_Union 5 /* Store result as keys in a table */ |
| 1047 | #define SRT_Except 6 /* Remove result from a UNION table */ |
drh | 5974a30 | 2000-06-07 14:42:26 +0000 | [diff] [blame] | 1048 | #define SRT_Table 7 /* Store result as data with a unique key */ |
drh | 2d0794e | 2002-03-03 03:03:52 +0000 | [diff] [blame] | 1049 | #define SRT_TempTable 8 /* Store result in a trasient table */ |
drh | d7489c3 | 2002-05-27 12:24:48 +0000 | [diff] [blame] | 1050 | #define SRT_Discard 9 /* Do not save the results anywhere */ |
drh | f46f905 | 2002-06-22 02:33:38 +0000 | [diff] [blame] | 1051 | #define SRT_Sorter 10 /* Store results in the sorter */ |
drh | 142e30d | 2002-08-28 03:00:58 +0000 | [diff] [blame] | 1052 | #define SRT_Subroutine 11 /* Call a subroutine to handle results */ |
drh | 51522cd | 2005-01-20 13:36:19 +0000 | [diff] [blame] | 1053 | #define SRT_Exists 12 /* Put 0 or 1 in a memory cell */ |
drh | fef5208 | 2000-06-06 01:50:43 +0000 | [diff] [blame] | 1054 | |
| 1055 | /* |
drh | 2282792 | 2000-06-06 17:27:05 +0000 | [diff] [blame] | 1056 | ** When a SELECT uses aggregate functions (like "count(*)" or "avg(f1)") |
| 1057 | ** we have to do some additional analysis of expressions. An instance |
| 1058 | ** of the following structure holds information about a single subexpression |
| 1059 | ** somewhere in the SELECT statement. An array of these structures holds |
| 1060 | ** all the information we need to generate code for aggregate |
| 1061 | ** expressions. |
| 1062 | ** |
| 1063 | ** Note that when analyzing a SELECT containing aggregates, both |
| 1064 | ** non-aggregate field variables and aggregate functions are stored |
| 1065 | ** in the AggExpr array of the Parser structure. |
| 1066 | ** |
| 1067 | ** The pExpr field points to an expression that is part of either the |
| 1068 | ** field list, the GROUP BY clause, the HAVING clause or the ORDER BY |
| 1069 | ** clause. The expression will be freed when those clauses are cleaned |
| 1070 | ** up. Do not try to delete the expression attached to AggExpr.pExpr. |
| 1071 | ** |
| 1072 | ** If AggExpr.pExpr==0, that means the expression is "count(*)". |
| 1073 | */ |
| 1074 | struct AggExpr { |
| 1075 | int isAgg; /* if TRUE contains an aggregate function */ |
| 1076 | Expr *pExpr; /* The expression */ |
drh | 0bce835 | 2002-02-28 00:41:10 +0000 | [diff] [blame] | 1077 | FuncDef *pFunc; /* Information about the aggregate function */ |
drh | 2282792 | 2000-06-06 17:27:05 +0000 | [diff] [blame] | 1078 | }; |
| 1079 | |
| 1080 | /* |
drh | f57b339 | 2001-10-08 13:22:32 +0000 | [diff] [blame] | 1081 | ** An SQL parser context. A copy of this structure is passed through |
| 1082 | ** the parser and down into all the parser action routine in order to |
| 1083 | ** carry around information that is global to the entire parse. |
drh | f197484 | 2004-11-05 03:56:00 +0000 | [diff] [blame] | 1084 | ** |
| 1085 | ** The structure is divided into two parts. When the parser and code |
| 1086 | ** generate call themselves recursively, the first part of the structure |
| 1087 | ** is constant but the second part is reset at the beginning and end of |
| 1088 | ** each recursion. |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 1089 | */ |
| 1090 | struct Parse { |
drh | 9bb575f | 2004-09-06 17:24:11 +0000 | [diff] [blame] | 1091 | sqlite3 *db; /* The main database structure */ |
drh | 4c50439 | 2000-10-16 22:06:40 +0000 | [diff] [blame] | 1092 | int rc; /* Return code from execution */ |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 1093 | char *zErrMsg; /* An error message */ |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 1094 | Vdbe *pVdbe; /* An engine for executing database bytecode */ |
drh | 836faa4 | 2003-01-11 13:30:57 +0000 | [diff] [blame] | 1095 | u8 colNamesSet; /* TRUE after OP_ColumnName has been issued to pVdbe */ |
drh | e0bc404 | 2002-06-25 01:09:11 +0000 | [diff] [blame] | 1096 | u8 nameClash; /* A permanent table name clashes with temp table name */ |
drh | a6ecd33 | 2004-06-10 00:29:09 +0000 | [diff] [blame] | 1097 | u8 checkSchema; /* Causes schema cookie check after an error */ |
drh | 205f48e | 2004-11-05 00:43:11 +0000 | [diff] [blame] | 1098 | u8 nested; /* Number of nested calls to the parser/code generator */ |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 1099 | int nErr; /* Number of errors seen */ |
drh | 832508b | 2002-03-02 17:04:07 +0000 | [diff] [blame] | 1100 | int nTab; /* Number of previously allocated VDBE cursors */ |
drh | 19a775c | 2000-06-05 18:54:46 +0000 | [diff] [blame] | 1101 | int nMem; /* Number of memory cells used so far */ |
drh | fef5208 | 2000-06-06 01:50:43 +0000 | [diff] [blame] | 1102 | int nSet; /* Number of sets used so far */ |
drh | 8024205 | 2004-06-09 00:48:12 +0000 | [diff] [blame] | 1103 | u32 cookieMask; /* Bitmask of schema verified databases */ |
| 1104 | int cookieValue[MAX_ATTACHED+2]; /* Values of cookies to verify */ |
| 1105 | int cookieGoto; /* Address of OP_Goto to cookie verifier subroutine */ |
| 1106 | u32 writeMask; /* Start a write transaction on these databases */ |
danielk1977 | a58fdfb | 2005-02-08 07:50:40 +0000 | [diff] [blame] | 1107 | u8 fillAgg; /* If true, ignore the Expr.iAgg field. Normally false */ |
drh | f197484 | 2004-11-05 03:56:00 +0000 | [diff] [blame] | 1108 | |
| 1109 | /* Above is constant between recursions. Below is reset before and after |
| 1110 | ** each recursion */ |
| 1111 | |
| 1112 | int nVar; /* Number of '?' variables seen in the SQL so far */ |
| 1113 | int nVarExpr; /* Number of used slots in apVarExpr[] */ |
| 1114 | int nVarExprAlloc; /* Number of allocated slots in apVarExpr[] */ |
| 1115 | Expr **apVarExpr; /* Pointers to :aaa and $aaaa wildcard expressions */ |
| 1116 | u8 explain; /* True if the EXPLAIN flag is found on the query */ |
drh | f197484 | 2004-11-05 03:56:00 +0000 | [diff] [blame] | 1117 | Token sErrToken; /* The token at which the error occurred */ |
| 1118 | Token sNameToken; /* Token with unqualified schema object name */ |
| 1119 | Token sLastToken; /* The last token parsed */ |
| 1120 | const char *zSql; /* All SQL text */ |
| 1121 | const char *zTail; /* All SQL text past the last semicolon parsed */ |
| 1122 | Table *pNewTable; /* A table being constructed by CREATE TABLE */ |
| 1123 | Trigger *pNewTrigger; /* Trigger under construct by a CREATE TRIGGER */ |
| 1124 | TriggerStack *trigStack; /* Trigger actions being coded */ |
| 1125 | const char *zAuthContext; /* The 6th parameter to db->xAuth callbacks */ |
danielk1977 | b3bce66 | 2005-01-29 08:32:43 +0000 | [diff] [blame] | 1126 | int nAgg; /* Number of aggregate expressions */ |
| 1127 | AggExpr *aAgg; /* An array of aggregate expressions */ |
| 1128 | int nMaxDepth; /* Maximum depth of subquery recursion */ |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 1129 | }; |
| 1130 | |
danielk1977 | d99bc93 | 2002-05-16 00:13:12 +0000 | [diff] [blame] | 1131 | /* |
drh | 85e2096 | 2003-04-25 17:52:11 +0000 | [diff] [blame] | 1132 | ** An instance of the following structure can be declared on a stack and used |
| 1133 | ** to save the Parse.zAuthContext value so that it can be restored later. |
| 1134 | */ |
| 1135 | struct AuthContext { |
| 1136 | const char *zAuthContext; /* Put saved Parse.zAuthContext here */ |
| 1137 | Parse *pParse; /* The Parse structure */ |
| 1138 | }; |
| 1139 | |
| 1140 | /* |
rdc | b0c374f | 2004-02-20 22:53:38 +0000 | [diff] [blame] | 1141 | ** Bitfield flags for P2 value in OP_PutIntKey and OP_Delete |
| 1142 | */ |
| 1143 | #define OPFLAG_NCHANGE 1 /* Set to update db->nChange */ |
| 1144 | #define OPFLAG_LASTROWID 2 /* Set to update db->lastRowid */ |
rdc | b0c374f | 2004-02-20 22:53:38 +0000 | [diff] [blame] | 1145 | |
| 1146 | /* |
danielk1977 | d99bc93 | 2002-05-16 00:13:12 +0000 | [diff] [blame] | 1147 | * Each trigger present in the database schema is stored as an instance of |
| 1148 | * struct Trigger. |
| 1149 | * |
| 1150 | * Pointers to instances of struct Trigger are stored in two ways. |
drh | 9bb575f | 2004-09-06 17:24:11 +0000 | [diff] [blame] | 1151 | * 1. In the "trigHash" hash table (part of the sqlite3* that represents the |
danielk1977 | d99bc93 | 2002-05-16 00:13:12 +0000 | [diff] [blame] | 1152 | * database). This allows Trigger structures to be retrieved by name. |
| 1153 | * 2. All triggers associated with a single table form a linked list, using the |
drh | ad3cab5 | 2002-05-24 02:04:32 +0000 | [diff] [blame] | 1154 | * pNext member of struct Trigger. A pointer to the first element of the |
| 1155 | * linked list is stored as the "pTrigger" member of the associated |
| 1156 | * struct Table. |
danielk1977 | d99bc93 | 2002-05-16 00:13:12 +0000 | [diff] [blame] | 1157 | * |
drh | ad3cab5 | 2002-05-24 02:04:32 +0000 | [diff] [blame] | 1158 | * The "step_list" member points to the first element of a linked list |
| 1159 | * containing the SQL statements specified as the trigger program. |
danielk1977 | d99bc93 | 2002-05-16 00:13:12 +0000 | [diff] [blame] | 1160 | */ |
danielk1977 | c3f9bad | 2002-05-15 08:30:12 +0000 | [diff] [blame] | 1161 | struct Trigger { |
drh | dc37945 | 2002-05-15 12:45:43 +0000 | [diff] [blame] | 1162 | char *name; /* The name of the trigger */ |
| 1163 | char *table; /* The table or view to which the trigger applies */ |
drh | f0f258b | 2003-04-21 18:48:45 +0000 | [diff] [blame] | 1164 | u8 iDb; /* Database containing this trigger */ |
drh | 79a519c | 2003-05-17 19:04:03 +0000 | [diff] [blame] | 1165 | u8 iTabDb; /* Database containing Trigger.table */ |
drh | f0f258b | 2003-04-21 18:48:45 +0000 | [diff] [blame] | 1166 | u8 op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT */ |
drh | dca7684 | 2004-12-07 14:06:13 +0000 | [diff] [blame] | 1167 | u8 tr_tm; /* One of TRIGGER_BEFORE, TRIGGER_AFTER */ |
drh | dc37945 | 2002-05-15 12:45:43 +0000 | [diff] [blame] | 1168 | Expr *pWhen; /* The WHEN clause of the expresion (may be NULL) */ |
| 1169 | IdList *pColumns; /* If this is an UPDATE OF <column-list> trigger, |
danielk1977 | d99bc93 | 2002-05-16 00:13:12 +0000 | [diff] [blame] | 1170 | the <column-list> is stored here */ |
drh | dc37945 | 2002-05-15 12:45:43 +0000 | [diff] [blame] | 1171 | int foreach; /* One of TK_ROW or TK_STATEMENT */ |
drh | 4312db5 | 2003-06-03 01:47:11 +0000 | [diff] [blame] | 1172 | Token nameToken; /* Token containing zName. Use during parsing only */ |
danielk1977 | c3f9bad | 2002-05-15 08:30:12 +0000 | [diff] [blame] | 1173 | |
drh | dc37945 | 2002-05-15 12:45:43 +0000 | [diff] [blame] | 1174 | TriggerStep *step_list; /* Link list of trigger program steps */ |
drh | dc37945 | 2002-05-15 12:45:43 +0000 | [diff] [blame] | 1175 | Trigger *pNext; /* Next trigger associated with the table */ |
danielk1977 | c3f9bad | 2002-05-15 08:30:12 +0000 | [diff] [blame] | 1176 | }; |
| 1177 | |
danielk1977 | d99bc93 | 2002-05-16 00:13:12 +0000 | [diff] [blame] | 1178 | /* |
drh | dca7684 | 2004-12-07 14:06:13 +0000 | [diff] [blame] | 1179 | ** A trigger is either a BEFORE or an AFTER trigger. The following constants |
| 1180 | ** determine which. |
| 1181 | ** |
| 1182 | ** If there are multiple triggers, you might of some BEFORE and some AFTER. |
| 1183 | ** In that cases, the constants below can be ORed together. |
| 1184 | */ |
| 1185 | #define TRIGGER_BEFORE 1 |
| 1186 | #define TRIGGER_AFTER 2 |
| 1187 | |
| 1188 | /* |
danielk1977 | d99bc93 | 2002-05-16 00:13:12 +0000 | [diff] [blame] | 1189 | * An instance of struct TriggerStep is used to store a single SQL statement |
| 1190 | * that is a part of a trigger-program. |
| 1191 | * |
| 1192 | * Instances of struct TriggerStep are stored in a singly linked list (linked |
| 1193 | * using the "pNext" member) referenced by the "step_list" member of the |
| 1194 | * associated struct Trigger instance. The first element of the linked list is |
| 1195 | * the first step of the trigger-program. |
| 1196 | * |
| 1197 | * The "op" member indicates whether this is a "DELETE", "INSERT", "UPDATE" or |
| 1198 | * "SELECT" statement. The meanings of the other members is determined by the |
| 1199 | * value of "op" as follows: |
| 1200 | * |
| 1201 | * (op == TK_INSERT) |
| 1202 | * orconf -> stores the ON CONFLICT algorithm |
| 1203 | * pSelect -> If this is an INSERT INTO ... SELECT ... statement, then |
| 1204 | * this stores a pointer to the SELECT statement. Otherwise NULL. |
| 1205 | * target -> A token holding the name of the table to insert into. |
| 1206 | * pExprList -> If this is an INSERT INTO ... VALUES ... statement, then |
| 1207 | * this stores values to be inserted. Otherwise NULL. |
| 1208 | * pIdList -> If this is an INSERT INTO ... (<column-names>) VALUES ... |
drh | ad3cab5 | 2002-05-24 02:04:32 +0000 | [diff] [blame] | 1209 | * statement, then this stores the column-names to be |
| 1210 | * inserted into. |
danielk1977 | d99bc93 | 2002-05-16 00:13:12 +0000 | [diff] [blame] | 1211 | * |
| 1212 | * (op == TK_DELETE) |
| 1213 | * target -> A token holding the name of the table to delete from. |
| 1214 | * pWhere -> The WHERE clause of the DELETE statement if one is specified. |
| 1215 | * Otherwise NULL. |
| 1216 | * |
| 1217 | * (op == TK_UPDATE) |
| 1218 | * target -> A token holding the name of the table to update rows of. |
| 1219 | * pWhere -> The WHERE clause of the UPDATE statement if one is specified. |
| 1220 | * Otherwise NULL. |
| 1221 | * pExprList -> A list of the columns to update and the expressions to update |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1222 | * them to. See sqlite3Update() documentation of "pChanges" |
drh | ad3cab5 | 2002-05-24 02:04:32 +0000 | [diff] [blame] | 1223 | * argument. |
danielk1977 | d99bc93 | 2002-05-16 00:13:12 +0000 | [diff] [blame] | 1224 | * |
| 1225 | */ |
| 1226 | struct TriggerStep { |
| 1227 | int op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT, TK_SELECT */ |
| 1228 | int orconf; /* OE_Rollback etc. */ |
drh | a69d916 | 2003-04-17 22:57:53 +0000 | [diff] [blame] | 1229 | Trigger *pTrig; /* The trigger that this step is a part of */ |
danielk1977 | c3f9bad | 2002-05-15 08:30:12 +0000 | [diff] [blame] | 1230 | |
danielk1977 | d99bc93 | 2002-05-16 00:13:12 +0000 | [diff] [blame] | 1231 | Select *pSelect; /* Valid for SELECT and sometimes |
| 1232 | INSERT steps (when pExprList == 0) */ |
| 1233 | Token target; /* Valid for DELETE, UPDATE, INSERT steps */ |
| 1234 | Expr *pWhere; /* Valid for DELETE, UPDATE steps */ |
| 1235 | ExprList *pExprList; /* Valid for UPDATE statements and sometimes |
| 1236 | INSERT steps (when pSelect == 0) */ |
| 1237 | IdList *pIdList; /* Valid for INSERT statements only */ |
| 1238 | |
| 1239 | TriggerStep * pNext; /* Next in the link-list */ |
| 1240 | }; |
| 1241 | |
| 1242 | /* |
| 1243 | * An instance of struct TriggerStack stores information required during code |
| 1244 | * generation of a single trigger program. While the trigger program is being |
| 1245 | * coded, its associated TriggerStack instance is pointed to by the |
| 1246 | * "pTriggerStack" member of the Parse structure. |
| 1247 | * |
| 1248 | * The pTab member points to the table that triggers are being coded on. The |
| 1249 | * newIdx member contains the index of the vdbe cursor that points at the temp |
| 1250 | * table that stores the new.* references. If new.* references are not valid |
| 1251 | * for the trigger being coded (for example an ON DELETE trigger), then newIdx |
| 1252 | * is set to -1. The oldIdx member is analogous to newIdx, for old.* references. |
| 1253 | * |
| 1254 | * The ON CONFLICT policy to be used for the trigger program steps is stored |
| 1255 | * as the orconf member. If this is OE_Default, then the ON CONFLICT clause |
| 1256 | * specified for individual triggers steps is used. |
| 1257 | * |
| 1258 | * struct TriggerStack has a "pNext" member, to allow linked lists to be |
| 1259 | * constructed. When coding nested triggers (triggers fired by other triggers) |
| 1260 | * each nested trigger stores its parent trigger's TriggerStack as the "pNext" |
| 1261 | * pointer. Once the nested trigger has been coded, the pNext value is restored |
| 1262 | * to the pTriggerStack member of the Parse stucture and coding of the parent |
| 1263 | * trigger continues. |
| 1264 | * |
| 1265 | * Before a nested trigger is coded, the linked list pointed to by the |
| 1266 | * pTriggerStack is scanned to ensure that the trigger is not about to be coded |
| 1267 | * recursively. If this condition is detected, the nested trigger is not coded. |
| 1268 | */ |
| 1269 | struct TriggerStack { |
| 1270 | Table *pTab; /* Table that triggers are currently being coded on */ |
| 1271 | int newIdx; /* Index of vdbe cursor to "new" temp table */ |
| 1272 | int oldIdx; /* Index of vdbe cursor to "old" temp table */ |
| 1273 | int orconf; /* Current orconf policy */ |
danielk1977 | 6f34903 | 2002-06-11 02:25:40 +0000 | [diff] [blame] | 1274 | int ignoreJump; /* where to jump to for a RAISE(IGNORE) */ |
drh | e22a334 | 2003-04-22 20:30:37 +0000 | [diff] [blame] | 1275 | Trigger *pTrigger; /* The trigger currently being coded */ |
| 1276 | TriggerStack *pNext; /* Next trigger down on the trigger stack */ |
danielk1977 | d99bc93 | 2002-05-16 00:13:12 +0000 | [diff] [blame] | 1277 | }; |
| 1278 | |
| 1279 | /* |
drh | f26e09c | 2003-05-31 16:21:12 +0000 | [diff] [blame] | 1280 | ** The following structure contains information used by the sqliteFix... |
| 1281 | ** routines as they walk the parse tree to make database references |
| 1282 | ** explicit. |
| 1283 | */ |
| 1284 | typedef struct DbFixer DbFixer; |
| 1285 | struct DbFixer { |
| 1286 | Parse *pParse; /* The parsing context. Error messages written here */ |
| 1287 | const char *zDb; /* Make sure all objects are contained in this database */ |
| 1288 | const char *zType; /* Type of the container - used for error messages */ |
| 1289 | const Token *pName; /* Name of the container - used for error messages */ |
| 1290 | }; |
| 1291 | |
| 1292 | /* |
drh | 234c39d | 2004-07-24 03:30:47 +0000 | [diff] [blame] | 1293 | ** A pointer to this structure is used to communicate information |
| 1294 | ** from sqlite3Init and OP_ParseSchema into the sqlite3InitCallback. |
| 1295 | */ |
| 1296 | typedef struct { |
drh | 9bb575f | 2004-09-06 17:24:11 +0000 | [diff] [blame] | 1297 | sqlite3 *db; /* The database being initialized */ |
drh | 234c39d | 2004-07-24 03:30:47 +0000 | [diff] [blame] | 1298 | char **pzErrMsg; /* Error message stored here */ |
| 1299 | } InitData; |
| 1300 | |
drh | b6c2989 | 2004-11-22 19:12:19 +0000 | [diff] [blame] | 1301 | /* |
danielk1977 | d99bc93 | 2002-05-16 00:13:12 +0000 | [diff] [blame] | 1302 | * This global flag is set for performance testing of triggers. When it is set |
| 1303 | * SQLite will perform the overhead of building new and old trigger references |
| 1304 | * even when no triggers exist |
| 1305 | */ |
drh | 38f8271 | 2004-06-18 17:10:16 +0000 | [diff] [blame] | 1306 | extern int sqlite3_always_code_trigger_setup; |
danielk1977 | c3f9bad | 2002-05-15 08:30:12 +0000 | [diff] [blame] | 1307 | |
drh | 7589723 | 2000-05-29 14:26:00 +0000 | [diff] [blame] | 1308 | /* |
| 1309 | ** Internal function prototypes |
| 1310 | */ |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1311 | int sqlite3StrICmp(const char *, const char *); |
| 1312 | int sqlite3StrNICmp(const char *, const char *, int); |
| 1313 | int sqlite3HashNoCase(const char *, int); |
danielk1977 | 8a6b541 | 2004-05-24 07:04:25 +0000 | [diff] [blame] | 1314 | int sqlite3IsNumber(const char*, int*, u8); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1315 | int sqlite3Compare(const char *, const char *); |
| 1316 | int sqlite3SortCompare(const char *, const char *); |
| 1317 | void sqlite3RealToSortable(double r, char *); |
danielk1977 | 2c33654 | 2005-01-13 02:14:23 +0000 | [diff] [blame] | 1318 | #ifdef SQLITE_MEMDEBUG |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1319 | void *sqlite3Malloc_(int,int,char*,int); |
| 1320 | void sqlite3Free_(void*,char*,int); |
| 1321 | void *sqlite3Realloc_(void*,int,char*,int); |
| 1322 | char *sqlite3StrDup_(const char*,char*,int); |
| 1323 | char *sqlite3StrNDup_(const char*, int,char*,int); |
| 1324 | void sqlite3CheckMemory(void*,int); |
drh | dcc581c | 2000-05-30 13:44:19 +0000 | [diff] [blame] | 1325 | #else |
drh | bdb4383 | 2004-06-18 17:45:11 +0000 | [diff] [blame] | 1326 | void *sqlite3Malloc(int); |
| 1327 | void *sqlite3MallocRaw(int); |
| 1328 | void sqlite3Free(void*); |
| 1329 | void *sqlite3Realloc(void*,int); |
| 1330 | char *sqlite3StrDup(const char*); |
| 1331 | char *sqlite3StrNDup(const char*, int); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1332 | # define sqlite3CheckMemory(a,b) |
drh | dcc581c | 2000-05-30 13:44:19 +0000 | [diff] [blame] | 1333 | #endif |
drh | 998da3a | 2004-06-19 15:22:56 +0000 | [diff] [blame] | 1334 | void sqlite3FreeX(void*); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1335 | char *sqlite3MPrintf(const char*, ...); |
| 1336 | char *sqlite3VMPrintf(const char*, va_list); |
drh | e54ca3f | 2004-06-07 01:52:14 +0000 | [diff] [blame] | 1337 | void sqlite3DebugPrintf(const char*, ...); |
drh | fe63d1c | 2004-09-08 20:13:04 +0000 | [diff] [blame] | 1338 | void *sqlite3TextToPtr(const char*); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1339 | void sqlite3SetString(char **, const char *, ...); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1340 | void sqlite3ErrorMsg(Parse*, const char*, ...); |
| 1341 | void sqlite3Dequote(char*); |
| 1342 | int sqlite3KeywordCode(const char*, int); |
| 1343 | int sqlite3RunParser(Parse*, const char*, char **); |
drh | 8024205 | 2004-06-09 00:48:12 +0000 | [diff] [blame] | 1344 | void sqlite3FinishCoding(Parse*); |
drh | e4e7207 | 2004-11-23 01:47:30 +0000 | [diff] [blame] | 1345 | Expr *sqlite3Expr(int, Expr*, Expr*, const Token*); |
drh | 4e0cff6 | 2004-11-05 05:10:28 +0000 | [diff] [blame] | 1346 | Expr *sqlite3RegisterExpr(Parse*,Token*); |
drh | 91bb0ee | 2004-09-01 03:06:34 +0000 | [diff] [blame] | 1347 | Expr *sqlite3ExprAnd(Expr*, Expr*); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1348 | void sqlite3ExprSpan(Expr*,Token*,Token*); |
| 1349 | Expr *sqlite3ExprFunction(ExprList*, Token*); |
drh | fa6bc00 | 2004-09-07 16:19:52 +0000 | [diff] [blame] | 1350 | void sqlite3ExprAssignVarNumber(Parse*, Expr*); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1351 | void sqlite3ExprDelete(Expr*); |
| 1352 | ExprList *sqlite3ExprListAppend(ExprList*,Expr*,Token*); |
| 1353 | void sqlite3ExprListDelete(ExprList*); |
drh | 9bb575f | 2004-09-06 17:24:11 +0000 | [diff] [blame] | 1354 | int sqlite3Init(sqlite3*, char**); |
drh | 234c39d | 2004-07-24 03:30:47 +0000 | [diff] [blame] | 1355 | int sqlite3InitCallback(void*, int, char**, char**); |
danielk1977 | 91cf71b | 2004-06-26 06:37:06 +0000 | [diff] [blame] | 1356 | void sqlite3Pragma(Parse*,Token*,Token*,Token*,int); |
drh | 9bb575f | 2004-09-06 17:24:11 +0000 | [diff] [blame] | 1357 | void sqlite3ResetInternalSchema(sqlite3*, int); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1358 | void sqlite3BeginParse(Parse*,int); |
drh | 9bb575f | 2004-09-06 17:24:11 +0000 | [diff] [blame] | 1359 | void sqlite3RollbackInternalChanges(sqlite3*); |
| 1360 | void sqlite3CommitInternalChanges(sqlite3*); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1361 | Table *sqlite3ResultSetOfSelect(Parse*,char*,Select*); |
| 1362 | void sqlite3OpenMasterTable(Vdbe *v, int); |
danielk1977 | cbb18d2 | 2004-05-28 11:37:27 +0000 | [diff] [blame] | 1363 | void sqlite3StartTable(Parse*,Token*,Token*,Token*,int,int); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1364 | void sqlite3AddColumn(Parse*,Token*); |
| 1365 | void sqlite3AddNotNull(Parse*, int); |
drh | 205f48e | 2004-11-05 00:43:11 +0000 | [diff] [blame] | 1366 | void sqlite3AddPrimaryKey(Parse*, ExprList*, int, int); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1367 | void sqlite3AddColumnType(Parse*,Token*,Token*); |
danielk1977 | 7977a17 | 2004-11-09 12:44:37 +0000 | [diff] [blame] | 1368 | void sqlite3AddDefaultValue(Parse*,Expr*); |
drh | d3d39e9 | 2004-05-20 22:16:29 +0000 | [diff] [blame] | 1369 | void sqlite3AddCollateType(Parse*, const char*, int); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1370 | void sqlite3EndTable(Parse*,Token*,Select*); |
drh | b7f9164 | 2004-10-31 02:22:47 +0000 | [diff] [blame] | 1371 | |
| 1372 | #ifndef SQLITE_OMIT_VIEW |
| 1373 | void sqlite3CreateView(Parse*,Token*,Token*,Token*,Select*,int); |
| 1374 | int sqlite3ViewGetColumnNames(Parse*,Table*); |
| 1375 | #else |
| 1376 | # define sqlite3ViewGetColumnNames(A,B) 0 |
| 1377 | #endif |
| 1378 | |
danielk1977 | a885810 | 2004-05-28 12:11:21 +0000 | [diff] [blame] | 1379 | void sqlite3DropTable(Parse*, SrcList*, int); |
drh | 9bb575f | 2004-09-06 17:24:11 +0000 | [diff] [blame] | 1380 | void sqlite3DeleteTable(sqlite3*, Table*); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1381 | void sqlite3Insert(Parse*, SrcList*, ExprList*, Select*, IdList*, int); |
| 1382 | IdList *sqlite3IdListAppend(IdList*, Token*); |
| 1383 | int sqlite3IdListIndex(IdList*,const char*); |
| 1384 | SrcList *sqlite3SrcListAppend(SrcList*, Token*, Token*); |
| 1385 | void sqlite3SrcListAddAlias(SrcList*, Token*); |
| 1386 | void sqlite3SrcListAssignCursors(Parse*, SrcList*); |
| 1387 | void sqlite3IdListDelete(IdList*); |
| 1388 | void sqlite3SrcListDelete(SrcList*); |
danielk1977 | 0202b29 | 2004-06-09 09:55:16 +0000 | [diff] [blame] | 1389 | void sqlite3CreateIndex(Parse*,Token*,Token*,SrcList*,ExprList*,int,Token*, |
danielk1977 | ef2cb63 | 2004-05-29 02:37:19 +0000 | [diff] [blame] | 1390 | Token*); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1391 | void sqlite3DropIndex(Parse*, SrcList*); |
| 1392 | void sqlite3AddKeyType(Vdbe*, ExprList*); |
| 1393 | void sqlite3AddIdxKeyType(Vdbe*, Index*); |
danielk1977 | b3bce66 | 2005-01-29 08:32:43 +0000 | [diff] [blame] | 1394 | int sqlite3Select(Parse*, Select*, int, int, Select*, int, int*, char *aff); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1395 | Select *sqlite3SelectNew(ExprList*,SrcList*,Expr*,ExprList*,Expr*,ExprList*, |
danielk1977 | a2dc3b1 | 2005-02-05 12:48:48 +0000 | [diff] [blame] | 1396 | int,Expr*,Expr*); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1397 | void sqlite3SelectDelete(Select*); |
| 1398 | void sqlite3SelectUnbind(Select*); |
| 1399 | Table *sqlite3SrcListLookup(Parse*, SrcList*); |
| 1400 | int sqlite3IsReadOnly(Parse*, Table*, int); |
drh | ad6d946 | 2004-09-19 02:15:24 +0000 | [diff] [blame] | 1401 | void sqlite3OpenTableForReading(Vdbe*, int iCur, Table*); |
drh | b6c2989 | 2004-11-22 19:12:19 +0000 | [diff] [blame] | 1402 | void sqlite3OpenTable(Vdbe*, int iCur, Table*, int); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1403 | void sqlite3DeleteFrom(Parse*, SrcList*, Expr*); |
| 1404 | void sqlite3Update(Parse*, SrcList*, ExprList*, Expr*, int); |
drh | e6f85e7 | 2004-12-25 01:03:13 +0000 | [diff] [blame] | 1405 | WhereInfo *sqlite3WhereBegin(Parse*, SrcList*, Expr*, ExprList**, Fetch*); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1406 | void sqlite3WhereEnd(WhereInfo*); |
| 1407 | void sqlite3ExprCode(Parse*, Expr*); |
drh | 2530378 | 2004-12-07 15:41:48 +0000 | [diff] [blame] | 1408 | void sqlite3ExprCodeAndCache(Parse*, Expr*); |
drh | f9b596e | 2004-05-26 16:54:42 +0000 | [diff] [blame] | 1409 | int sqlite3ExprCodeExprList(Parse*, ExprList*); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1410 | void sqlite3ExprIfTrue(Parse*, Expr*, int, int); |
| 1411 | void sqlite3ExprIfFalse(Parse*, Expr*, int, int); |
drh | 205f48e | 2004-11-05 00:43:11 +0000 | [diff] [blame] | 1412 | void sqlite3NextedParse(Parse*, const char*, ...); |
drh | 9bb575f | 2004-09-06 17:24:11 +0000 | [diff] [blame] | 1413 | Table *sqlite3FindTable(sqlite3*,const char*, const char*); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1414 | Table *sqlite3LocateTable(Parse*,const char*, const char*); |
drh | 9bb575f | 2004-09-06 17:24:11 +0000 | [diff] [blame] | 1415 | Index *sqlite3FindIndex(sqlite3*,const char*, const char*); |
| 1416 | void sqlite3UnlinkAndDeleteTable(sqlite3*,int,const char*); |
| 1417 | void sqlite3UnlinkAndDeleteIndex(sqlite3*,int,const char*); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1418 | void sqlite3Vacuum(Parse*, Token*); |
drh | 9bb575f | 2004-09-06 17:24:11 +0000 | [diff] [blame] | 1419 | int sqlite3RunVacuum(char**, sqlite3*); |
drh | a99db3b | 2004-06-19 14:49:12 +0000 | [diff] [blame] | 1420 | char *sqlite3NameFromToken(Token*); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1421 | int sqlite3ExprCheck(Parse*, Expr*, int, int*); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1422 | int sqlite3ExprCompare(Expr*, Expr*); |
drh | cce7d17 | 2000-05-31 15:34:51 +0000 | [diff] [blame] | 1423 | int sqliteFuncId(Token*); |
danielk1977 | b3bce66 | 2005-01-29 08:32:43 +0000 | [diff] [blame] | 1424 | int sqlite3ExprResolveNames(NameContext *, Expr *); |
danielk1977 | a58fdfb | 2005-02-08 07:50:40 +0000 | [diff] [blame] | 1425 | int sqlite3ExprAnalyzeAggregates(NameContext*, Expr*); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1426 | Vdbe *sqlite3GetVdbe(Parse*); |
| 1427 | void sqlite3Randomness(int, void*); |
drh | 9bb575f | 2004-09-06 17:24:11 +0000 | [diff] [blame] | 1428 | void sqlite3RollbackAll(sqlite3*); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1429 | void sqlite3CodeVerifySchema(Parse*, int); |
drh | 684917c | 2004-10-05 02:41:42 +0000 | [diff] [blame] | 1430 | void sqlite3BeginTransaction(Parse*, int); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1431 | void sqlite3CommitTransaction(Parse*); |
| 1432 | void sqlite3RollbackTransaction(Parse*); |
| 1433 | int sqlite3ExprIsConstant(Expr*); |
| 1434 | int sqlite3ExprIsInteger(Expr*, int*); |
| 1435 | int sqlite3IsRowid(const char*); |
drh | 9bb575f | 2004-09-06 17:24:11 +0000 | [diff] [blame] | 1436 | void sqlite3GenerateRowDelete(sqlite3*, Vdbe*, Table*, int, int); |
| 1437 | void sqlite3GenerateRowIndexDelete(sqlite3*, Vdbe*, Table*, int, char*); |
drh | 51846b5 | 2004-05-28 16:00:21 +0000 | [diff] [blame] | 1438 | void sqlite3GenerateIndexKey(Vdbe*, Index*, int); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1439 | void sqlite3GenerateConstraintChecks(Parse*,Table*,int,char*,int,int,int,int); |
| 1440 | void sqlite3CompleteInsertion(Parse*, Table*, int, char*, int, int, int); |
drh | 290c194 | 2004-08-21 17:54:45 +0000 | [diff] [blame] | 1441 | void sqlite3OpenTableAndIndices(Parse*, Table*, int, int); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1442 | void sqlite3BeginWriteOperation(Parse*, int, int); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1443 | Expr *sqlite3ExprDup(Expr*); |
| 1444 | void sqlite3TokenCopy(Token*, Token*); |
| 1445 | ExprList *sqlite3ExprListDup(ExprList*); |
| 1446 | SrcList *sqlite3SrcListDup(SrcList*); |
| 1447 | IdList *sqlite3IdListDup(IdList*); |
| 1448 | Select *sqlite3SelectDup(Select*); |
drh | 9bb575f | 2004-09-06 17:24:11 +0000 | [diff] [blame] | 1449 | FuncDef *sqlite3FindFunction(sqlite3*,const char*,int,int,u8,int); |
| 1450 | void sqlite3RegisterBuiltinFunctions(sqlite3*); |
| 1451 | void sqlite3RegisterDateTimeFunctions(sqlite3*); |
| 1452 | int sqlite3SafetyOn(sqlite3*); |
| 1453 | int sqlite3SafetyOff(sqlite3*); |
| 1454 | int sqlite3SafetyCheck(sqlite3*); |
| 1455 | void sqlite3ChangeCookie(sqlite3*, Vdbe*, int); |
drh | b7f9164 | 2004-10-31 02:22:47 +0000 | [diff] [blame] | 1456 | |
| 1457 | #ifndef SQLITE_OMIT_TRIGGER |
| 1458 | void sqlite3BeginTrigger(Parse*, Token*,Token*,int,int,IdList*,SrcList*, |
| 1459 | int,Expr*,int); |
| 1460 | void sqlite3FinishTrigger(Parse*, TriggerStep*, Token*); |
| 1461 | void sqlite3DropTrigger(Parse*, SrcList*); |
| 1462 | void sqlite3DropTriggerPtr(Parse*, Trigger*, int); |
drh | dca7684 | 2004-12-07 14:06:13 +0000 | [diff] [blame] | 1463 | int sqlite3TriggersExist(Parse*, Table*, int, ExprList*); |
drh | b7f9164 | 2004-10-31 02:22:47 +0000 | [diff] [blame] | 1464 | int sqlite3CodeRowTrigger(Parse*, int, ExprList*, int, Table *, int, int, |
| 1465 | int, int); |
| 1466 | void sqliteViewTriggers(Parse*, Table*, Expr*, int, ExprList*); |
| 1467 | void sqlite3DeleteTriggerStep(TriggerStep*); |
| 1468 | TriggerStep *sqlite3TriggerSelectStep(Select*); |
| 1469 | TriggerStep *sqlite3TriggerInsertStep(Token*, IdList*, ExprList*,Select*,int); |
| 1470 | TriggerStep *sqlite3TriggerUpdateStep(Token*, ExprList*, Expr*, int); |
| 1471 | TriggerStep *sqlite3TriggerDeleteStep(Token*, Expr*); |
| 1472 | void sqlite3DeleteTrigger(Trigger*); |
| 1473 | void sqlite3UnlinkAndDeleteTrigger(sqlite3*,int,const char*); |
| 1474 | #else |
| 1475 | # define sqlite3TriggersExist(A,B,C,D,E,F) 0 |
| 1476 | # define sqlite3DeleteTrigger(A) |
| 1477 | # define sqlite3DropTriggerPtr(A,B,C) |
| 1478 | # define sqlite3UnlinkAndDeleteTrigger(A,B,C) |
| 1479 | # define sqlite3CodeRowTrigger(A,B,C,D,E,F,G,H,I) 0 |
| 1480 | #endif |
| 1481 | |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1482 | int sqlite3JoinType(Parse*, Token*, Token*, Token*); |
danielk1977 | 0202b29 | 2004-06-09 09:55:16 +0000 | [diff] [blame] | 1483 | void sqlite3CreateForeignKey(Parse*, ExprList*, Token*, ExprList*, int); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1484 | void sqlite3DeferForeignKey(Parse*, int); |
drh | ed6c867 | 2003-01-12 18:02:16 +0000 | [diff] [blame] | 1485 | #ifndef SQLITE_OMIT_AUTHORIZATION |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1486 | void sqlite3AuthRead(Parse*,Expr*,SrcList*); |
| 1487 | int sqlite3AuthCheck(Parse*,int, const char*, const char*, const char*); |
| 1488 | void sqlite3AuthContextPush(Parse*, AuthContext*, const char*); |
| 1489 | void sqlite3AuthContextPop(AuthContext*); |
drh | ed6c867 | 2003-01-12 18:02:16 +0000 | [diff] [blame] | 1490 | #else |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1491 | # define sqlite3AuthRead(a,b,c) |
| 1492 | # define sqlite3AuthCheck(a,b,c,d,e) SQLITE_OK |
| 1493 | # define sqlite3AuthContextPush(a,b,c) |
| 1494 | # define sqlite3AuthContextPop(a) ((void)(a)) |
drh | ed6c867 | 2003-01-12 18:02:16 +0000 | [diff] [blame] | 1495 | #endif |
drh | 25d6543 | 2004-07-22 15:02:25 +0000 | [diff] [blame] | 1496 | void sqlite3Attach(Parse*, Token*, Token*, int, Token*); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1497 | void sqlite3Detach(Parse*, Token*); |
drh | 9bb575f | 2004-09-06 17:24:11 +0000 | [diff] [blame] | 1498 | int sqlite3BtreeFactory(const sqlite3 *db, const char *zFilename, |
drh | 90f5ecb | 2004-07-22 01:19:35 +0000 | [diff] [blame] | 1499 | int omitJournal, int nCache, Btree **ppBtree); |
danielk1977 | 4adee20 | 2004-05-08 08:23:19 +0000 | [diff] [blame] | 1500 | int sqlite3FixInit(DbFixer*, Parse*, int, const char*, const Token*); |
| 1501 | int sqlite3FixSrcList(DbFixer*, SrcList*); |
| 1502 | int sqlite3FixSelect(DbFixer*, Select*); |
| 1503 | int sqlite3FixExpr(DbFixer*, Expr*); |
| 1504 | int sqlite3FixExprList(DbFixer*, ExprList*); |
| 1505 | int sqlite3FixTriggerStep(DbFixer*, TriggerStep*); |
| 1506 | double sqlite3AtoF(const char *z, const char **); |
danielk1977 | 6f8a503 | 2004-05-10 10:34:51 +0000 | [diff] [blame] | 1507 | char *sqlite3_snprintf(int,char*,const char*,...); |
drh | fec19aa | 2004-05-19 20:41:03 +0000 | [diff] [blame] | 1508 | int sqlite3GetInt32(const char *, int*); |
drh | fec19aa | 2004-05-19 20:41:03 +0000 | [diff] [blame] | 1509 | int sqlite3FitsIn64Bits(const char *); |
danielk1977 | 6622cce | 2004-05-20 11:00:52 +0000 | [diff] [blame] | 1510 | int sqlite3utf16ByteLen(const void *pData, int nChar); |
| 1511 | int sqlite3utf8CharLen(const char *pData, int nByte); |
drh | 4e5ffc5 | 2004-08-31 00:52:37 +0000 | [diff] [blame] | 1512 | int sqlite3ReadUtf8(const unsigned char *); |
danielk1977 | 192ac1d | 2004-05-10 07:17:30 +0000 | [diff] [blame] | 1513 | int sqlite3PutVarint(unsigned char *, u64); |
danielk1977 | 90e4d95 | 2004-05-10 10:05:53 +0000 | [diff] [blame] | 1514 | int sqlite3GetVarint(const unsigned char *, u64 *); |
drh | 6d2fb15 | 2004-05-14 16:50:06 +0000 | [diff] [blame] | 1515 | int sqlite3GetVarint32(const unsigned char *, u32 *); |
danielk1977 | 192ac1d | 2004-05-10 07:17:30 +0000 | [diff] [blame] | 1516 | int sqlite3VarintLen(u64 v); |
danielk1977 | a37cdde | 2004-05-16 11:15:36 +0000 | [diff] [blame] | 1517 | void sqlite3IndexAffinityStr(Vdbe *, Index *); |
| 1518 | void sqlite3TableAffinityStr(Vdbe *, Table *); |
danielk1977 | e014a83 | 2004-05-17 10:48:57 +0000 | [diff] [blame] | 1519 | char sqlite3CompareAffinity(Expr *pExpr, char aff2); |
danielk1977 | e014a83 | 2004-05-17 10:48:57 +0000 | [diff] [blame] | 1520 | int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity); |
danielk1977 | bf3b721 | 2004-05-18 10:06:24 +0000 | [diff] [blame] | 1521 | char sqlite3ExprAffinity(Expr *pExpr); |
drh | eb2e176 | 2004-05-27 01:53:56 +0000 | [diff] [blame] | 1522 | int sqlite3atoi64(const char*, i64*); |
drh | 9bb575f | 2004-09-06 17:24:11 +0000 | [diff] [blame] | 1523 | void sqlite3Error(sqlite3*, int, const char*,...); |
danielk1977 | cbb18d2 | 2004-05-28 11:37:27 +0000 | [diff] [blame] | 1524 | void *sqlite3HexToBlob(const char *z); |
danielk1977 | ef2cb63 | 2004-05-29 02:37:19 +0000 | [diff] [blame] | 1525 | int sqlite3TwoPartName(Parse *, Token *, Token *, Token **); |
danielk1977 | f20b21c | 2004-05-31 23:56:42 +0000 | [diff] [blame] | 1526 | const char *sqlite3ErrStr(int); |
danielk1977 | d02eb1f | 2004-06-06 09:44:03 +0000 | [diff] [blame] | 1527 | int sqlite3ReadUniChar(const char *zStr, int *pOffset, u8 *pEnc, int fold); |
danielk1977 | 8a41449 | 2004-06-29 08:59:35 +0000 | [diff] [blame] | 1528 | int sqlite3ReadSchema(Parse *pParse); |
drh | 9bb575f | 2004-09-06 17:24:11 +0000 | [diff] [blame] | 1529 | CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char *,int,int); |
danielk1977 | 0202b29 | 2004-06-09 09:55:16 +0000 | [diff] [blame] | 1530 | CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char *zName, int nName); |
danielk1977 | 7cedc8d | 2004-06-10 10:50:08 +0000 | [diff] [blame] | 1531 | CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr); |
| 1532 | int sqlite3CheckCollSeq(Parse *, CollSeq *); |
| 1533 | int sqlite3CheckIndexCollSeq(Parse *, Index *); |
danielk1977 | d812336 | 2004-06-12 09:25:12 +0000 | [diff] [blame] | 1534 | int sqlite3CheckObjectName(Parse *, const char *); |
danielk1977 | b28af71 | 2004-06-21 06:50:26 +0000 | [diff] [blame] | 1535 | void sqlite3VdbeSetChanges(sqlite3 *, int); |
danielk1977 | f461889 | 2004-06-28 13:09:11 +0000 | [diff] [blame] | 1536 | void sqlite3utf16Substr(sqlite3_context *,int,sqlite3_value **); |
danielk1977 | 4e6af13 | 2004-06-10 14:01:08 +0000 | [diff] [blame] | 1537 | |
| 1538 | const void *sqlite3ValueText(sqlite3_value*, u8); |
| 1539 | int sqlite3ValueBytes(sqlite3_value*, u8); |
danielk1977 | bfd6cce | 2004-06-18 04:24:54 +0000 | [diff] [blame] | 1540 | void sqlite3ValueSetStr(sqlite3_value*, int, const void *,u8, void(*)(void*)); |
danielk1977 | 4e6af13 | 2004-06-10 14:01:08 +0000 | [diff] [blame] | 1541 | void sqlite3ValueFree(sqlite3_value*); |
| 1542 | sqlite3_value *sqlite3ValueNew(); |
drh | 9bb575f | 2004-09-06 17:24:11 +0000 | [diff] [blame] | 1543 | sqlite3_value *sqlite3GetTransientValue(sqlite3*db); |
danielk1977 | aee18ef | 2005-03-09 12:26:50 +0000 | [diff] [blame] | 1544 | int sqlite3ValueFromExpr(Expr *, u8, u8, sqlite3_value **); |
| 1545 | void sqlite3ValueApplyAffinity(sqlite3_value *, u8, u8); |
drh | 4e5ffc5 | 2004-08-31 00:52:37 +0000 | [diff] [blame] | 1546 | extern const unsigned char sqlite3UpperToLower[]; |
danielk1977 | a0bf265 | 2004-11-04 14:30:04 +0000 | [diff] [blame] | 1547 | void sqlite3RootPageMoved(Db*, int, int); |
drh | 4343fea | 2004-11-05 23:46:15 +0000 | [diff] [blame] | 1548 | void sqlite3Reindex(Parse*, Token*, Token*); |
drh | 1f01ec1 | 2005-02-15 21:36:18 +0000 | [diff] [blame] | 1549 | void sqlite3AlterFunctions(sqlite3*); |
danielk1977 | 9fd2a9a | 2004-11-12 13:42:30 +0000 | [diff] [blame] | 1550 | void sqlite3AlterRenameTable(Parse*, SrcList*, Token*); |
| 1551 | int sqlite3GetToken(const unsigned char *, int *); |
drh | 2958a4e | 2004-11-12 03:56:15 +0000 | [diff] [blame] | 1552 | void sqlite3NestedParse(Parse*, const char*, ...); |
drh | d89bd00 | 2005-01-22 03:03:54 +0000 | [diff] [blame] | 1553 | void sqlite3ExpirePreparedStatements(sqlite3*); |
danielk1977 | b3bce66 | 2005-01-29 08:32:43 +0000 | [diff] [blame] | 1554 | void sqlite3CodeSubselect(Parse *, Expr *); |
| 1555 | int sqlite3SelectResolve(Parse *, Select *, NameContext *); |
danielk1977 | aee18ef | 2005-03-09 12:26:50 +0000 | [diff] [blame] | 1556 | void sqlite3ColumnDefault(Vdbe *, Table *, int); |
danielk1977 | e302663 | 2004-06-22 11:29:02 +0000 | [diff] [blame] | 1557 | |
| 1558 | #endif |