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drh75897232000-05-29 14:26:00 +00001/*
drhb19a2bc2001-09-16 00:13:26 +00002** 2001 September 15
drh75897232000-05-29 14:26:00 +00003**
drhb19a2bc2001-09-16 00:13:26 +00004** The author disclaims copyright to this source code. In place of
5** a legal notice, here is a blessing:
drh75897232000-05-29 14:26:00 +00006**
drhb19a2bc2001-09-16 00:13:26 +00007** 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.
drh75897232000-05-29 14:26:00 +000010**
11*************************************************************************
12** Internal interface definitions for SQLite.
13**
danielk1977299b1872004-11-22 10:02:10 +000014** @(#) $Id: sqliteInt.h,v 1.342 2004/11/22 10:02:11 danielk1977 Exp $
drh75897232000-05-29 14:26:00 +000015*/
danielk1977e3026632004-06-22 11:29:02 +000016#ifndef _SQLITEINT_H_
17#define _SQLITEINT_H_
18
drheb206252004-10-01 02:00:31 +000019/*
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
drh58f391b2002-11-20 11:55:18 +000042#include "config.h"
drh1d482dd2004-05-31 18:23:07 +000043#include "sqlite3.h"
drhbeae3192001-09-22 18:12:08 +000044#include "hash.h"
drh75897232000-05-29 14:26:00 +000045#include "parse.h"
drh75897232000-05-29 14:26:00 +000046#include <stdio.h>
47#include <stdlib.h>
48#include <string.h>
49#include <assert.h>
50
drh967e8b72000-06-21 13:59:10 +000051/*
drha1b351a2001-09-14 16:42:12 +000052** The maximum number of in-memory pages to use for the main database
53** table and for temporary tables.
54*/
drh603240c2002-03-05 01:11:12 +000055#define MAX_PAGES 2000
56#define TEMP_PAGES 500
drha1b351a2001-09-14 16:42:12 +000057
58/*
drh0bd1f4e2002-06-06 18:54:39 +000059** If the following macro is set to 1, then NULL values are considered
60** distinct for the SELECT DISTINCT statement and for UNION or EXCEPT
61** compound queries. No other SQL database engine (among those tested)
62** works this way except for OCELOT. But the SQL92 spec implies that
63** this is how things should work.
64**
65** If the following macro is set to 0, then NULLs are indistinct for
66** SELECT DISTINCT and for UNION.
67*/
68#define NULL_ALWAYS_DISTINCT 0
69
70/*
71** If the following macro is set to 1, then NULL values are considered
72** distinct when determining whether or not two entries are the same
73** in a UNIQUE index. This is the way PostgreSQL, Oracle, DB2, MySQL,
74** OCELOT, and Firebird all work. The SQL92 spec explicitly says this
75** is the way things are suppose to work.
76**
77** If the following macro is set to 0, the NULLs are indistinct for
78** a UNIQUE index. In this mode, you can only have a single NULL entry
79** for a column declared UNIQUE. This is the way Informix and SQL Server
80** work.
81*/
82#define NULL_DISTINCT_FOR_UNIQUE 1
83
84/*
drh665de472003-03-31 13:36:09 +000085** The maximum number of attached databases. This must be at least 2
86** in order to support the main database file (0) and the file used to
drh80242052004-06-09 00:48:12 +000087** hold temporary tables (1). And it must be less than 32 because
88** we use a bitmask of databases with a u32 in places (for example
89** the Parse.cookieMask field).
drh665de472003-03-31 13:36:09 +000090*/
91#define MAX_ATTACHED 10
92
93/*
drhfa6bc002004-09-07 16:19:52 +000094** The maximum value of a ?nnn wildcard that the parser will accept.
95*/
96#define SQLITE_MAX_VARIABLE_NUMBER 999
97
98/*
drh13bff812003-04-15 01:19:47 +000099** When building SQLite for embedded systems where memory is scarce,
100** you can define one or more of the following macros to omit extra
101** features of the library and thus keep the size of the library to
102** a minimum.
103*/
104/* #define SQLITE_OMIT_AUTHORIZATION 1 */
drh70ce3f02003-04-15 19:22:22 +0000105/* #define SQLITE_OMIT_INMEMORYDB 1 */
drh13bff812003-04-15 01:19:47 +0000106/* #define SQLITE_OMIT_VACUUM 1 */
drh0a5294b2003-11-11 23:30:35 +0000107/* #define SQLITE_OMIT_DATETIME_FUNCS 1 */
danielk1977348bb5d2003-10-18 09:37:26 +0000108/* #define SQLITE_OMIT_PROGRESS_CALLBACK 1 */
danielk197745901d62004-11-10 15:27:38 +0000109/* #define SQLITE_OMIT_AUTOVACUUM */
danielk19779fd2a9a2004-11-12 13:42:30 +0000110/* #define SQLITE_OMIT_ALTERTABLE */
drh13bff812003-04-15 01:19:47 +0000111
112/*
drhf1974842004-11-05 03:56:00 +0000113** GCC does not define the offsetof() macro so we'll have to do it
114** ourselves.
115*/
116#ifndef offsetof
117#define offsetof(STRUCTURE,FIELD) ((int)((char*)&((STRUCTURE*)0)->FIELD))
118#endif
119
120/*
drh5a2c2c22001-11-21 02:21:11 +0000121** Integers of known sizes. These typedefs might change for architectures
122** where the sizes very. Preprocessor macros are available so that the
123** types can be conveniently redefined at compile-type. Like this:
124**
125** cc '-DUINTPTR_TYPE=long long int' ...
drh41a2b482001-01-20 19:52:49 +0000126*/
drh3aac2dd2004-04-26 14:10:20 +0000127#ifndef UINT64_TYPE
drhefad9992004-06-22 12:13:55 +0000128# if defined(_MSC_VER) || defined(__BORLANDC__)
129# define UINT64_TYPE unsigned __int64
130# else
131# define UINT64_TYPE unsigned long long int
132# endif
drh3aac2dd2004-04-26 14:10:20 +0000133#endif
drh5a2c2c22001-11-21 02:21:11 +0000134#ifndef UINT32_TYPE
135# define UINT32_TYPE unsigned int
136#endif
137#ifndef UINT16_TYPE
138# define UINT16_TYPE unsigned short int
139#endif
drh939a16d2004-07-15 13:37:22 +0000140#ifndef INT16_TYPE
141# define INT16_TYPE short int
142#endif
drh5a2c2c22001-11-21 02:21:11 +0000143#ifndef UINT8_TYPE
144# define UINT8_TYPE unsigned char
145#endif
drh905793e2004-02-21 13:31:09 +0000146#ifndef INT8_TYPE
147# define INT8_TYPE signed char
148#endif
drhefad9992004-06-22 12:13:55 +0000149#ifndef LONGDOUBLE_TYPE
150# define LONGDOUBLE_TYPE long double
151#endif
drh5a2c2c22001-11-21 02:21:11 +0000152#ifndef INTPTR_TYPE
drh58f391b2002-11-20 11:55:18 +0000153# if SQLITE_PTR_SZ==4
154# define INTPTR_TYPE int
155# else
drhefad9992004-06-22 12:13:55 +0000156# define INTPTR_TYPE sqlite_int64
drhd2f0a722004-08-04 14:29:22 +0000157# endif
158#endif
159#ifndef UINTPTR_TYPE
160# if SQLITE_PTR_SZ==4
161# define UINTPTR_TYPE unsigned int
162# else
drh1211de32004-07-26 12:24:22 +0000163# define UINTPTR_TYPE sqlite_uint64
drh58f391b2002-11-20 11:55:18 +0000164# endif
drh5a2c2c22001-11-21 02:21:11 +0000165#endif
drhefad9992004-06-22 12:13:55 +0000166typedef sqlite_int64 i64; /* 8-byte signed integer */
drh3aac2dd2004-04-26 14:10:20 +0000167typedef UINT64_TYPE u64; /* 8-byte unsigned integer */
drh5a2c2c22001-11-21 02:21:11 +0000168typedef UINT32_TYPE u32; /* 4-byte unsigned integer */
169typedef UINT16_TYPE u16; /* 2-byte unsigned integer */
drh939a16d2004-07-15 13:37:22 +0000170typedef INT16_TYPE i16; /* 2-byte signed integer */
drh5a2c2c22001-11-21 02:21:11 +0000171typedef UINT8_TYPE u8; /* 1-byte unsigned integer */
drh905793e2004-02-21 13:31:09 +0000172typedef UINT8_TYPE i8; /* 1-byte signed integer */
drh5a2c2c22001-11-21 02:21:11 +0000173typedef INTPTR_TYPE ptr; /* Big enough to hold a pointer */
drh1211de32004-07-26 12:24:22 +0000174typedef UINTPTR_TYPE uptr; /* Big enough to hold a pointer */
drh5a2c2c22001-11-21 02:21:11 +0000175
176/*
drhbbd42a62004-05-22 17:41:58 +0000177** Macros to determine whether the machine is big or little endian,
178** evaluated at runtime.
179*/
180extern const int sqlite3one;
drh9c054832004-05-31 18:51:57 +0000181#define SQLITE_BIGENDIAN (*(char *)(&sqlite3one)==0)
182#define SQLITE_LITTLEENDIAN (*(char *)(&sqlite3one)==1)
drhbbd42a62004-05-22 17:41:58 +0000183
184/*
drh90f5ecb2004-07-22 01:19:35 +0000185** An instance of the following structure is used to store the busy-handler
186** callback for a given sqlite handle.
187**
188** The sqlite.busyHandler member of the sqlite struct contains the busy
189** callback for the database handle. Each pager opened via the sqlite
190** handle is passed a pointer to sqlite.busyHandler. The busy-handler
191** callback is currently invoked only from within pager.c.
192*/
193typedef struct BusyHandler BusyHandler;
194struct BusyHandler {
195 int (*xFunc)(void *,int); /* The busy callback */
196 void *pArg; /* First arg to busy callback */
197};
198
199/*
200** Defer sourcing vdbe.h and btree.h until after the "u8" and
201** "BusyHandler typedefs.
drh905793e2004-02-21 13:31:09 +0000202*/
203#include "vdbe.h"
drh3aac2dd2004-04-26 14:10:20 +0000204#include "btree.h"
drh905793e2004-02-21 13:31:09 +0000205
206/*
drh5a2c2c22001-11-21 02:21:11 +0000207** This macro casts a pointer to an integer. Useful for doing
208** pointer arithmetic.
209*/
210#define Addr(X) ((uptr)X)
drh41a2b482001-01-20 19:52:49 +0000211
212/*
drh967e8b72000-06-21 13:59:10 +0000213** If memory allocation problems are found, recompile with
214**
drhfaa57ac2004-06-09 14:01:51 +0000215** -DSQLITE_DEBUG=1
drh967e8b72000-06-21 13:59:10 +0000216**
217** to enable some sanity checking on malloc() and free(). To
218** check for memory leaks, recompile with
219**
drhfaa57ac2004-06-09 14:01:51 +0000220** -DSQLITE_DEBUG=2
drh967e8b72000-06-21 13:59:10 +0000221**
222** and a line of text will be written to standard error for
223** each malloc() and free(). This output can be analyzed
224** by an AWK script to determine if there are any leaks.
225*/
drhfaa57ac2004-06-09 14:01:51 +0000226#ifdef SQLITE_DEBUG
danielk19774adee202004-05-08 08:23:19 +0000227# define sqliteMalloc(X) sqlite3Malloc_(X,1,__FILE__,__LINE__)
228# define sqliteMallocRaw(X) sqlite3Malloc_(X,0,__FILE__,__LINE__)
229# define sqliteFree(X) sqlite3Free_(X,__FILE__,__LINE__)
230# define sqliteRealloc(X,Y) sqlite3Realloc_(X,Y,__FILE__,__LINE__)
231# define sqliteStrDup(X) sqlite3StrDup_(X,__FILE__,__LINE__)
232# define sqliteStrNDup(X,Y) sqlite3StrNDup_(X,Y,__FILE__,__LINE__)
drhc3c2fc92000-05-31 22:58:39 +0000233#else
drh38f82712004-06-18 17:10:16 +0000234# define sqliteFree sqlite3FreeX
235# define sqliteMalloc sqlite3Malloc
236# define sqliteMallocRaw sqlite3MallocRaw
237# define sqliteRealloc sqlite3Realloc
drhae29ffb2004-09-25 14:39:18 +0000238# define sqliteStrDup sqlite3StrDup
239# define sqliteStrNDup sqlite3StrNDup
drhdcc581c2000-05-30 13:44:19 +0000240#endif
241
drh75897232000-05-29 14:26:00 +0000242/*
drhdaffd0e2001-04-11 14:28:42 +0000243** This variable gets set if malloc() ever fails. After it gets set,
244** the SQLite library shuts down permanently.
245*/
danielk19776f8a5032004-05-10 10:34:51 +0000246extern int sqlite3_malloc_failed;
drhdaffd0e2001-04-11 14:28:42 +0000247
248/*
drh6e142f52000-06-08 13:36:40 +0000249** The following global variables are used for testing and debugging
drhfaa57ac2004-06-09 14:01:51 +0000250** only. They only work if SQLITE_DEBUG is defined.
drh6e142f52000-06-08 13:36:40 +0000251*/
drhfaa57ac2004-06-09 14:01:51 +0000252#ifdef SQLITE_DEBUG
drh46934232004-11-20 19:18:00 +0000253extern int sqlite3_nMalloc; /* Number of sqliteMalloc() calls */
254extern int sqlite3_nFree; /* Number of sqliteFree() calls */
255extern int sqlite3_iMallocFail; /* Fail sqliteMalloc() after this many calls */
256extern int sqlite3_iMallocReset; /* Set iMallocFail to this when it reaches 0 */
drh6e142f52000-06-08 13:36:40 +0000257#endif
258
259/*
drh75897232000-05-29 14:26:00 +0000260** Name of the master database table. The master database table
261** is a special table that holds the names and attributes of all
262** user tables and indices.
263*/
drhe0bc4042002-06-25 01:09:11 +0000264#define MASTER_NAME "sqlite_master"
265#define TEMP_MASTER_NAME "sqlite_temp_master"
drh75897232000-05-29 14:26:00 +0000266
267/*
danielk19778e150812004-05-10 01:17:37 +0000268** The root-page of the master database table.
269*/
270#define MASTER_ROOT 1
271
272/*
drhed6c8672003-01-12 18:02:16 +0000273** The name of the schema table.
274*/
danielk1977ef2cb632004-05-29 02:37:19 +0000275#define SCHEMA_TABLE(x) (x==1?TEMP_MASTER_NAME:MASTER_NAME)
drhed6c8672003-01-12 18:02:16 +0000276
277/*
drh75897232000-05-29 14:26:00 +0000278** A convenience macro that returns the number of elements in
279** an array.
280*/
281#define ArraySize(X) (sizeof(X)/sizeof(X[0]))
282
283/*
284** Forward references to structures
285*/
drh7020f652000-06-03 18:06:52 +0000286typedef struct Column Column;
drh75897232000-05-29 14:26:00 +0000287typedef struct Table Table;
288typedef struct Index Index;
289typedef struct Instruction Instruction;
290typedef struct Expr Expr;
291typedef struct ExprList ExprList;
292typedef struct Parse Parse;
293typedef struct Token Token;
294typedef struct IdList IdList;
drhad3cab52002-05-24 02:04:32 +0000295typedef struct SrcList SrcList;
drh75897232000-05-29 14:26:00 +0000296typedef struct WhereInfo WhereInfo;
drh6b563442001-11-07 16:48:26 +0000297typedef struct WhereLevel WhereLevel;
drh9bb61fe2000-06-05 16:01:39 +0000298typedef struct Select Select;
drh22827922000-06-06 17:27:05 +0000299typedef struct AggExpr AggExpr;
drh0bce8352002-02-28 00:41:10 +0000300typedef struct FuncDef FuncDef;
danielk1977c3f9bad2002-05-15 08:30:12 +0000301typedef struct Trigger Trigger;
302typedef struct TriggerStep TriggerStep;
303typedef struct TriggerStack TriggerStack;
drhc2eef3b2002-08-31 18:53:06 +0000304typedef struct FKey FKey;
drh001bbcb2003-03-19 03:14:00 +0000305typedef struct Db Db;
drh85e20962003-04-25 17:52:11 +0000306typedef struct AuthContext AuthContext;
danielk19778d059842004-05-12 11:24:02 +0000307typedef struct KeyClass KeyClass;
drha9fd84b2004-05-18 23:21:35 +0000308typedef struct CollSeq CollSeq;
drhd3d39e92004-05-20 22:16:29 +0000309typedef struct KeyInfo KeyInfo;
310
drh001bbcb2003-03-19 03:14:00 +0000311/*
312** Each database file to be accessed by the system is an instance
313** of the following structure. There are normally two of these structures
314** in the sqlite.aDb[] array. aDb[0] is the main database file and
drha69d9162003-04-17 22:57:53 +0000315** aDb[1] is the database file used to hold temporary tables. Additional
316** databases may be attached.
drh001bbcb2003-03-19 03:14:00 +0000317*/
318struct Db {
319 char *zName; /* Name of this database */
320 Btree *pBt; /* The B*Tree structure for this database file */
321 int schema_cookie; /* Database schema version number for this file */
drhd24cc422003-03-27 12:51:24 +0000322 Hash tblHash; /* All tables indexed by name */
323 Hash idxHash; /* All (named) indices indexed by name */
324 Hash trigHash; /* All triggers indexed by name */
325 Hash aFKey; /* Foreign keys indexed by to-table */
drhd24cc422003-03-27 12:51:24 +0000326 u16 flags; /* Flags associated with this database */
drh90f5ecb2004-07-22 01:19:35 +0000327 u8 inTrans; /* 0: not writable. 1: Transaction. 2: Checkpoint */
danielk197791cf71b2004-06-26 06:37:06 +0000328 u8 safety_level; /* How aggressive at synching data to disk */
329 int cache_size; /* Number of pages to use in the cache */
drh4794f732004-11-05 17:17:50 +0000330 Table *pSeqTab; /* The sqlite_sequence table used by AUTOINCREMENT */
331 void *pAux; /* Auxiliary data. Usually NULL */
drh4d189ca2004-02-12 18:46:38 +0000332 void (*xFreeAux)(void*); /* Routine to free pAux */
drh001bbcb2003-03-19 03:14:00 +0000333};
drh75897232000-05-29 14:26:00 +0000334
335/*
drh8bf8dc92003-05-17 17:35:10 +0000336** These macros can be used to test, set, or clear bits in the
337** Db.flags field.
338*/
339#define DbHasProperty(D,I,P) (((D)->aDb[I].flags&(P))==(P))
340#define DbHasAnyProperty(D,I,P) (((D)->aDb[I].flags&(P))!=0)
341#define DbSetProperty(D,I,P) (D)->aDb[I].flags|=(P)
342#define DbClearProperty(D,I,P) (D)->aDb[I].flags&=~(P)
343
344/*
345** Allowed values for the DB.flags field.
346**
drh8bf8dc92003-05-17 17:35:10 +0000347** The DB_SchemaLoaded flag is set after the database schema has been
348** read into internal hash tables.
349**
350** DB_UnresetViews means that one or more views have column names that
351** have been filled out. If the schema changes, these column names might
352** changes and so the view will need to be reset.
353*/
drh124b27e2004-06-19 16:06:10 +0000354#define DB_SchemaLoaded 0x0001 /* The schema has been loaded */
355#define DB_UnresetViews 0x0002 /* Some views have defined column names */
drh8bf8dc92003-05-17 17:35:10 +0000356
danielk1977dc8453f2004-06-12 00:42:34 +0000357#define SQLITE_UTF16NATIVE (SQLITE_BIGENDIAN?SQLITE_UTF16BE:SQLITE_UTF16LE)
drh8bf8dc92003-05-17 17:35:10 +0000358
359/*
drhc9b84a12002-06-20 11:36:48 +0000360** Each database is an instance of the following structure.
361**
rdcb0c374f2004-02-20 22:53:38 +0000362** The sqlite.lastRowid records the last insert rowid generated by an
363** insert statement. Inserts on views do not affect its value. Each
364** trigger has its own context, so that lastRowid can be updated inside
365** triggers as usual. The previous value will be restored once the trigger
366** exits. Upon entering a before or instead of trigger, lastRowid is no
367** longer (since after version 2.8.12) reset to -1.
368**
369** The sqlite.nChange does not count changes within triggers and keeps no
danielk19776f8a5032004-05-10 10:34:51 +0000370** context. It is reset at start of sqlite3_exec.
rdcb0c374f2004-02-20 22:53:38 +0000371** The sqlite.lsChange represents the number of changes made by the last
372** insert, update, or delete statement. It remains constant throughout the
373** length of a statement and is then updated by OP_SetCounts. It keeps a
374** context stack just like lastRowid so that the count of changes
375** within a trigger is not seen outside the trigger. Changes to views do not
376** affect the value of lsChange.
377** The sqlite.csChange keeps track of the number of current changes (since
378** the last statement) and is used to update sqlite_lsChange.
danielk19776622cce2004-05-20 11:00:52 +0000379**
380** The member variables sqlite.errCode, sqlite.zErrMsg and sqlite.zErrMsg16
381** store the most recent error code and, if applicable, string. The
382** internal function sqlite3Error() is used to set these variables
383** consistently.
drh75897232000-05-29 14:26:00 +0000384*/
drh9bb575f2004-09-06 17:24:11 +0000385struct sqlite3 {
drh001bbcb2003-03-19 03:14:00 +0000386 int nDb; /* Number of backends currently in use */
387 Db *aDb; /* All backends */
388 Db aDbStatic[2]; /* Static space for the 2 default backends */
drh5e00f6c2001-09-13 13:46:56 +0000389 int flags; /* Miscellanous flags. See below */
drh973b6e32003-02-12 14:09:42 +0000390 u8 file_format; /* What file format version is this database? */
drh90f5ecb2004-07-22 01:19:35 +0000391 u8 temp_store; /* 1: file 2: memory 0: default */
drh5e00f6c2001-09-13 13:46:56 +0000392 int nTable; /* Number of tables in the database */
danielk197724162fe2004-06-04 06:22:00 +0000393 BusyHandler busyHandler; /* Busy callback */
drhaa940ea2004-01-15 02:44:03 +0000394 void *pCommitArg; /* Argument to xCommitCallback() */
395 int (*xCommitCallback)(void*);/* Invoked at every commit. */
drh0bce8352002-02-28 00:41:10 +0000396 Hash aFunc; /* All functions that can be in SQL exprs */
drha9fd84b2004-05-18 23:21:35 +0000397 Hash aCollSeq; /* All collating sequences */
drhd3d39e92004-05-20 22:16:29 +0000398 CollSeq *pDfltColl; /* The default collating sequence (BINARY) */
drhf328bc82004-05-10 23:29:49 +0000399 i64 lastRowid; /* ROWID of most recent insert (see above) */
400 i64 priorNewRowid; /* Last randomly generated ROWID */
drh247be432002-05-10 05:44:55 +0000401 int magic; /* Magic number for detect library misuse */
danielk1977b28af712004-06-21 06:50:26 +0000402 int nChange; /* Value returned by sqlite3_changes() */
403 int nTotalChange; /* Value returned by sqlite3_total_changes() */
404 struct sqlite3InitInfo { /* Information used during initialization */
405 int iDb; /* When back is being initialized */
406 int newTnum; /* Rootpage of table being initialized */
407 u8 busy; /* TRUE if currently initializing */
drh1d85d932004-02-14 23:05:52 +0000408 } init;
drh326dce72003-01-29 14:06:07 +0000409 struct Vdbe *pVdbe; /* List of active virtual machines */
danielk19771d850a72004-05-31 08:26:49 +0000410 int activeVdbeCnt; /* Number of vdbes currently executing */
drh18de4822003-01-16 16:28:53 +0000411 void (*xTrace)(void*,const char*); /* Trace function */
412 void *pTraceArg; /* Argument to the trace function */
drhed6c8672003-01-12 18:02:16 +0000413#ifndef SQLITE_OMIT_AUTHORIZATION
drhe22a3342003-04-22 20:30:37 +0000414 int (*xAuth)(void*,int,const char*,const char*,const char*,const char*);
415 /* Access authorization function */
drhed6c8672003-01-12 18:02:16 +0000416 void *pAuthArg; /* 1st argument to the access auth function */
417#endif
danielk1977348bb5d2003-10-18 09:37:26 +0000418#ifndef SQLITE_OMIT_PROGRESS_CALLBACK
419 int (*xProgress)(void *); /* The progress callback */
420 void *pProgressArg; /* Argument to the progress callback */
421 int nProgressOps; /* Number of opcodes for progress callback */
422#endif
danielk19774adee202004-05-08 08:23:19 +0000423
danielk19776622cce2004-05-20 11:00:52 +0000424 int errCode; /* Most recent error code (SQLITE_*) */
danielk1977b1bc9532004-05-22 03:05:33 +0000425 u8 enc; /* Text encoding for this database. */
danielk19771d850a72004-05-31 08:26:49 +0000426 u8 autoCommit; /* The auto-commit flag. */
danielk19777cedc8d2004-06-10 10:50:08 +0000427 void(*xCollNeeded)(void*,sqlite3*,int eTextRep,const char*);
428 void(*xCollNeeded16)(void*,sqlite3*,int eTextRep,const void*);
429 void *pCollNeededArg;
danielk1977bfd6cce2004-06-18 04:24:54 +0000430 sqlite3_value *pValue; /* Value used for transient conversions */
431 sqlite3_value *pErr; /* Most recent error message */
432
433 char *zErrMsg; /* Most recent error message (UTF-8 encoded) */
434 char *zErrMsg16; /* Most recent error message (UTF-8 encoded) */
drh75897232000-05-29 14:26:00 +0000435};
436
437/*
drh8bf8dc92003-05-17 17:35:10 +0000438** Possible values for the sqlite.flags and or Db.flags fields.
439**
440** On sqlite.flags, the SQLITE_InTrans value means that we have
441** executed a BEGIN. On Db.flags, SQLITE_InTrans means a statement
442** transaction is active on that particular database file.
drh75897232000-05-29 14:26:00 +0000443*/
drh5e00f6c2001-09-13 13:46:56 +0000444#define SQLITE_VdbeTrace 0x00000001 /* True to trace VDBE execution */
445#define SQLITE_Initialized 0x00000002 /* True after initialization */
446#define SQLITE_Interrupt 0x00000004 /* Cancel current operation */
447#define SQLITE_InTrans 0x00000008 /* True if in a transaction */
448#define SQLITE_InternChanges 0x00000010 /* Uncommitted Hash table changes */
drh382c0242001-10-06 16:33:02 +0000449#define SQLITE_FullColNames 0x00000020 /* Show full column names on SELECT */
drhfcabd462004-02-20 14:50:58 +0000450#define SQLITE_ShortColNames 0x00000040 /* Show short columns names */
451#define SQLITE_CountRows 0x00000080 /* Count rows changed by INSERT, */
drh1bee3d72001-10-15 00:44:35 +0000452 /* DELETE, or UPDATE and return */
453 /* the count using a callback. */
drhfcabd462004-02-20 14:50:58 +0000454#define SQLITE_NullCallback 0x00000100 /* Invoke the callback once if the */
drh6a535342001-10-19 16:44:56 +0000455 /* result set is empty */
drh35d4c2f2004-06-10 01:30:59 +0000456#define SQLITE_SqlTrace 0x00000200 /* Debug print SQL as it executes */
457#define SQLITE_VdbeListing 0x00000400 /* Debug listings of VDBE programs */
drhf4040832004-10-22 20:29:21 +0000458#define SQLITE_WriteSchema 0x00000800 /* OK to update SQLITE_MASTER */
drh58b95762000-06-02 01:17:37 +0000459
460/*
drh247be432002-05-10 05:44:55 +0000461** Possible values for the sqlite.magic field.
462** The numbers are obtained at random and have no special meaning, other
463** than being distinct from one another.
464*/
465#define SQLITE_MAGIC_OPEN 0xa029a697 /* Database is open */
466#define SQLITE_MAGIC_CLOSED 0x9f3c2d33 /* Database is closed */
467#define SQLITE_MAGIC_BUSY 0xf03b7906 /* Database currently in use */
468#define SQLITE_MAGIC_ERROR 0xb5357930 /* An SQLITE_MISUSE error occurred */
469
470/*
drh0bce8352002-02-28 00:41:10 +0000471** Each SQL function is defined by an instance of the following
472** structure. A pointer to this structure is stored in the sqlite.aFunc
drh8e0a2f92002-02-23 23:45:45 +0000473** hash table. When multiple functions have the same name, the hash table
474** points to a linked list of these structures.
drh28037572000-08-02 13:47:41 +0000475*/
drh0bce8352002-02-28 00:41:10 +0000476struct FuncDef {
drhf9b596e2004-05-26 16:54:42 +0000477 char *zName; /* SQL name of the function */
478 int nArg; /* Number of arguments. -1 means unlimited */
danielk1977d8123362004-06-12 09:25:12 +0000479 u8 iPrefEnc; /* Preferred text encoding (SQLITE_UTF8, 16LE, 16BE) */
drhf9b596e2004-05-26 16:54:42 +0000480 void *pUserData; /* User data parameter */
481 FuncDef *pNext; /* Next function with same name */
482 void (*xFunc)(sqlite3_context*,int,sqlite3_value**); /* Regular function */
483 void (*xStep)(sqlite3_context*,int,sqlite3_value**); /* Aggregate step */
484 void (*xFinalize)(sqlite3_context*); /* Aggregate finializer */
danielk1977dc1bdc42004-06-11 10:51:27 +0000485 u8 needCollSeq; /* True if sqlite3GetFuncCollSeq() might be called */
drh8e0a2f92002-02-23 23:45:45 +0000486};
drh28037572000-08-02 13:47:41 +0000487
488/*
drh967e8b72000-06-21 13:59:10 +0000489** information about each column of an SQL table is held in an instance
drh7020f652000-06-03 18:06:52 +0000490** of this structure.
491*/
492struct Column {
drh967e8b72000-06-21 13:59:10 +0000493 char *zName; /* Name of this column */
danielk19777977a172004-11-09 12:44:37 +0000494 Expr *pDflt; /* Default value of this column */
drh382c0242001-10-06 16:33:02 +0000495 char *zType; /* Data type for this column */
drha9fd84b2004-05-18 23:21:35 +0000496 CollSeq *pColl; /* Collating sequence. If NULL, use the default */
drh4a324312001-12-21 14:30:42 +0000497 u8 notNull; /* True if there is a NOT NULL constraint */
drh78100cc2003-08-23 22:40:53 +0000498 u8 isPrimKey; /* True if this column is part of the PRIMARY KEY */
danielk1977a37cdde2004-05-16 11:15:36 +0000499 char affinity; /* One of the SQLITE_AFF_... values */
drh7020f652000-06-03 18:06:52 +0000500};
501
502/*
drha9fd84b2004-05-18 23:21:35 +0000503** A "Collating Sequence" is defined by an instance of the following
danielk19770202b292004-06-09 09:55:16 +0000504** structure. Conceptually, a collating sequence consists of a name and
505** a comparison routine that defines the order of that sequence.
drha9fd84b2004-05-18 23:21:35 +0000506**
danielk19770202b292004-06-09 09:55:16 +0000507** There may two seperate implementations of the collation function, one
508** that processes text in UTF-8 encoding (CollSeq.xCmp) and another that
509** processes text encoded in UTF-16 (CollSeq.xCmp16), using the machine
510** native byte order. When a collation sequence is invoked, SQLite selects
511** the version that will require the least expensive encoding
512** transalations, if any.
513**
514** The CollSeq.pUser member variable is an extra parameter that passed in
515** as the first argument to the UTF-8 comparison function, xCmp.
516** CollSeq.pUser16 is the equivalent for the UTF-16 comparison function,
517** xCmp16.
518**
519** If both CollSeq.xCmp and CollSeq.xCmp16 are NULL, it means that the
520** collating sequence is undefined. Indices built on an undefined
521** collating sequence may not be read or written.
drha9fd84b2004-05-18 23:21:35 +0000522*/
523struct CollSeq {
danielk19770202b292004-06-09 09:55:16 +0000524 char *zName; /* Name of the collating sequence, UTF-8 encoded */
danielk1977466be562004-06-10 02:16:01 +0000525 u8 enc; /* Text encoding handled by xCmp() */
drha9fd84b2004-05-18 23:21:35 +0000526 void *pUser; /* First argument to xCmp() */
danielk19770202b292004-06-09 09:55:16 +0000527 int (*xCmp)(void*,int, const void*, int, const void*);
drha9fd84b2004-05-18 23:21:35 +0000528};
529
530/*
drhd3d39e92004-05-20 22:16:29 +0000531** A sort order can be either ASC or DESC.
drh8e2ca022002-06-17 17:07:19 +0000532*/
drh8e2ca022002-06-17 17:07:19 +0000533#define SQLITE_SO_ASC 0 /* Sort in ascending order */
drhd3d39e92004-05-20 22:16:29 +0000534#define SQLITE_SO_DESC 1 /* Sort in ascending order */
drh8e2ca022002-06-17 17:07:19 +0000535
536/*
danielk1977a37cdde2004-05-16 11:15:36 +0000537** Column affinity types.
538*/
539#define SQLITE_AFF_INTEGER 'i'
540#define SQLITE_AFF_NUMERIC 'n'
541#define SQLITE_AFF_TEXT 't'
542#define SQLITE_AFF_NONE 'o'
543
544
545/*
drh22f70c32002-02-18 01:17:00 +0000546** Each SQL table is represented in memory by an instance of the
547** following structure.
548**
drhd24cc422003-03-27 12:51:24 +0000549** Table.zName is the name of the table. The case of the original
drh22f70c32002-02-18 01:17:00 +0000550** CREATE TABLE statement is stored, but case is not significant for
551** comparisons.
552**
drhd24cc422003-03-27 12:51:24 +0000553** Table.nCol is the number of columns in this table. Table.aCol is a
drh22f70c32002-02-18 01:17:00 +0000554** pointer to an array of Column structures, one for each column.
555**
drhd24cc422003-03-27 12:51:24 +0000556** If the table has an INTEGER PRIMARY KEY, then Table.iPKey is the index of
557** the column that is that key. Otherwise Table.iPKey is negative. Note
drh22f70c32002-02-18 01:17:00 +0000558** that the datatype of the PRIMARY KEY must be INTEGER for this field to
559** be set. An INTEGER PRIMARY KEY is used as the rowid for each row of
560** the table. If a table has no INTEGER PRIMARY KEY, then a random rowid
drhd24cc422003-03-27 12:51:24 +0000561** is generated for each row of the table. Table.hasPrimKey is true if
drh22f70c32002-02-18 01:17:00 +0000562** the table has any PRIMARY KEY, INTEGER or otherwise.
563**
drhd24cc422003-03-27 12:51:24 +0000564** Table.tnum is the page number for the root BTree page of the table in the
565** database file. If Table.iDb is the index of the database table backend
566** in sqlite.aDb[]. 0 is for the main database and 1 is for the file that
567** holds temporary tables and indices. If Table.isTransient
drh22f70c32002-02-18 01:17:00 +0000568** is true, then the table is stored in a file that is automatically deleted
drhd24cc422003-03-27 12:51:24 +0000569** when the VDBE cursor to the table is closed. In this case Table.tnum
drh22f70c32002-02-18 01:17:00 +0000570** refers VDBE cursor number that holds the table open, not to the root
571** page number. Transient tables are used to hold the results of a
572** sub-query that appears instead of a real table name in the FROM clause
573** of a SELECT statement.
drh75897232000-05-29 14:26:00 +0000574*/
575struct Table {
drh967e8b72000-06-21 13:59:10 +0000576 char *zName; /* Name of the table */
drh967e8b72000-06-21 13:59:10 +0000577 int nCol; /* Number of columns in this table */
578 Column *aCol; /* Information about each column */
drhc8392582001-12-31 02:48:51 +0000579 int iPKey; /* If not less then 0, use aCol[iPKey] as the primary key */
drh967e8b72000-06-21 13:59:10 +0000580 Index *pIndex; /* List of SQL indexes on this table. */
drh22f70c32002-02-18 01:17:00 +0000581 int tnum; /* Root BTree node for this table (see note above) */
drha76b5df2002-02-23 02:32:10 +0000582 Select *pSelect; /* NULL for tables. Points to definition if a view. */
drh717e6402001-09-27 03:22:32 +0000583 u8 readOnly; /* True if this table should not be written by the user */
drhd24cc422003-03-27 12:51:24 +0000584 u8 iDb; /* Index into sqlite.aDb[] of the backend for this table */
drh22f70c32002-02-18 01:17:00 +0000585 u8 isTransient; /* True if automatically deleted when VDBE finishes */
drh4a324312001-12-21 14:30:42 +0000586 u8 hasPrimKey; /* True if there exists a primary key */
drh9cfcf5d2002-01-29 18:41:24 +0000587 u8 keyConf; /* What to do in case of uniqueness conflict on iPKey */
drh205f48e2004-11-05 00:43:11 +0000588 u8 autoInc; /* True if the integer primary key is autoincrement */
danielk1977c3f9bad2002-05-15 08:30:12 +0000589 Trigger *pTrigger; /* List of SQL triggers on this table */
drhc2eef3b2002-08-31 18:53:06 +0000590 FKey *pFKey; /* Linked list of all foreign keys in this table */
danielk19773d1bfea2004-05-14 11:00:53 +0000591 char *zColAff; /* String defining the affinity of each column */
drh75897232000-05-29 14:26:00 +0000592};
593
594/*
drhc2eef3b2002-08-31 18:53:06 +0000595** Each foreign key constraint is an instance of the following structure.
596**
597** A foreign key is associated with two tables. The "from" table is
598** the table that contains the REFERENCES clause that creates the foreign
599** key. The "to" table is the table that is named in the REFERENCES clause.
600** Consider this example:
601**
602** CREATE TABLE ex1(
603** a INTEGER PRIMARY KEY,
604** b INTEGER CONSTRAINT fk1 REFERENCES ex2(x)
605** );
606**
607** For foreign key "fk1", the from-table is "ex1" and the to-table is "ex2".
608**
609** Each REFERENCES clause generates an instance of the following structure
610** which is attached to the from-table. The to-table need not exist when
611** the from-table is created. The existance of the to-table is not checked
612** until an attempt is made to insert data into the from-table.
613**
drhea1ba172003-04-20 00:00:23 +0000614** The sqlite.aFKey hash table stores pointers to this structure
drhc2eef3b2002-08-31 18:53:06 +0000615** given the name of a to-table. For each to-table, all foreign keys
616** associated with that table are on a linked list using the FKey.pNextTo
617** field.
618*/
619struct FKey {
620 Table *pFrom; /* The table that constains the REFERENCES clause */
621 FKey *pNextFrom; /* Next foreign key in pFrom */
622 char *zTo; /* Name of table that the key points to */
623 FKey *pNextTo; /* Next foreign key that points to zTo */
624 int nCol; /* Number of columns in this key */
625 struct sColMap { /* Mapping of columns in pFrom to columns in zTo */
626 int iFrom; /* Index of column in pFrom */
627 char *zCol; /* Name of column in zTo. If 0 use PRIMARY KEY */
628 } *aCol; /* One entry for each of nCol column s */
629 u8 isDeferred; /* True if constraint checking is deferred till COMMIT */
630 u8 updateConf; /* How to resolve conflicts that occur on UPDATE */
631 u8 deleteConf; /* How to resolve conflicts that occur on DELETE */
632 u8 insertConf; /* How to resolve conflicts that occur on INSERT */
633};
634
635/*
636** SQLite supports many different ways to resolve a contraint
drh22f70c32002-02-18 01:17:00 +0000637** error. ROLLBACK processing means that a constraint violation
drh0bd1f4e2002-06-06 18:54:39 +0000638** causes the operation in process to fail and for the current transaction
drh1c928532002-01-31 15:54:21 +0000639** to be rolled back. ABORT processing means the operation in process
640** fails and any prior changes from that one operation are backed out,
641** but the transaction is not rolled back. FAIL processing means that
642** the operation in progress stops and returns an error code. But prior
643** changes due to the same operation are not backed out and no rollback
644** occurs. IGNORE means that the particular row that caused the constraint
645** error is not inserted or updated. Processing continues and no error
646** is returned. REPLACE means that preexisting database rows that caused
647** a UNIQUE constraint violation are removed so that the new insert or
648** update can proceed. Processing continues and no error is reported.
drhc2eef3b2002-08-31 18:53:06 +0000649**
650** RESTRICT, SETNULL, and CASCADE actions apply only to foreign keys.
651** RESTRICT is the same as ABORT for IMMEDIATE foreign keys and the
652** same as ROLLBACK for DEFERRED keys. SETNULL means that the foreign
653** key is set to NULL. CASCADE means that a DELETE or UPDATE of the
654** referenced table row is propagated into the row that holds the
655** foreign key.
drh1c928532002-01-31 15:54:21 +0000656**
drh968af522003-02-11 14:55:40 +0000657** The following symbolic values are used to record which type
drh1c928532002-01-31 15:54:21 +0000658** of action to take.
drh9cfcf5d2002-01-29 18:41:24 +0000659*/
drh1c928532002-01-31 15:54:21 +0000660#define OE_None 0 /* There is no constraint to check */
661#define OE_Rollback 1 /* Fail the operation and rollback the transaction */
662#define OE_Abort 2 /* Back out changes but do no rollback transaction */
663#define OE_Fail 3 /* Stop the operation but leave all prior changes */
664#define OE_Ignore 4 /* Ignore the error. Do not do the INSERT or UPDATE */
665#define OE_Replace 5 /* Delete existing record, then do INSERT or UPDATE */
drhc2eef3b2002-08-31 18:53:06 +0000666
667#define OE_Restrict 6 /* OE_Abort for IMMEDIATE, OE_Rollback for DEFERRED */
668#define OE_SetNull 7 /* Set the foreign key value to NULL */
669#define OE_SetDflt 8 /* Set the foreign key value to its default */
670#define OE_Cascade 9 /* Cascade the changes */
671
672#define OE_Default 99 /* Do whatever the default action is */
drh9cfcf5d2002-01-29 18:41:24 +0000673
drhd3d39e92004-05-20 22:16:29 +0000674
675/*
676** An instance of the following structure is passed as the first
677** argument to sqlite3VdbeKeyCompare and is used to control the
678** comparison of the two index keys.
679**
680** If the KeyInfo.incrKey value is true and the comparison would
681** otherwise be equal, then return a result as if the second key larger.
682*/
683struct KeyInfo {
danielk1977b1bc9532004-05-22 03:05:33 +0000684 u8 enc; /* Text encoding - one of the TEXT_Utf* values */
drhd3d39e92004-05-20 22:16:29 +0000685 u8 incrKey; /* Increase 2nd key by epsilon before comparison */
686 int nField; /* Number of entries in aColl[] */
drhffbc3082004-05-21 01:29:06 +0000687 u8 *aSortOrder; /* If defined an aSortOrder[i] is true, sort DESC */
drhd3d39e92004-05-20 22:16:29 +0000688 CollSeq *aColl[1]; /* Collating sequence for each term of the key */
689};
690
drh9cfcf5d2002-01-29 18:41:24 +0000691/*
drh66b89c82000-11-28 20:47:17 +0000692** Each SQL index is represented in memory by an
drh75897232000-05-29 14:26:00 +0000693** instance of the following structure.
drh967e8b72000-06-21 13:59:10 +0000694**
695** The columns of the table that are to be indexed are described
696** by the aiColumn[] field of this structure. For example, suppose
697** we have the following table and index:
698**
699** CREATE TABLE Ex1(c1 int, c2 int, c3 text);
700** CREATE INDEX Ex2 ON Ex1(c3,c1);
701**
702** In the Table structure describing Ex1, nCol==3 because there are
703** three columns in the table. In the Index structure describing
704** Ex2, nColumn==2 since 2 of the 3 columns of Ex1 are indexed.
705** The value of aiColumn is {2, 0}. aiColumn[0]==2 because the
706** first column to be indexed (c3) has an index of 2 in Ex1.aCol[].
707** The second column to be indexed (c1) has an index of 0 in
708** Ex1.aCol[], hence Ex2.aiColumn[1]==0.
drhea1ba172003-04-20 00:00:23 +0000709**
710** The Index.onError field determines whether or not the indexed columns
711** must be unique and what to do if they are not. When Index.onError=OE_None,
712** it means this is not a unique index. Otherwise it is a unique index
713** and the value of Index.onError indicate the which conflict resolution
714** algorithm to employ whenever an attempt is made to insert a non-unique
715** element.
drh75897232000-05-29 14:26:00 +0000716*/
717struct Index {
drh967e8b72000-06-21 13:59:10 +0000718 char *zName; /* Name of this index */
drh967e8b72000-06-21 13:59:10 +0000719 int nColumn; /* Number of columns in the table used by this index */
720 int *aiColumn; /* Which columns are used by this index. 1st is 0 */
721 Table *pTable; /* The SQL table being indexed */
drhbe0072d2001-09-13 14:46:09 +0000722 int tnum; /* Page containing root of this index in database file */
drh9cfcf5d2002-01-29 18:41:24 +0000723 u8 onError; /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */
drh485b39b2002-07-13 03:11:52 +0000724 u8 autoIndex; /* True if is automatically created (ex: by UNIQUE) */
drhd24cc422003-03-27 12:51:24 +0000725 u8 iDb; /* Index in sqlite.aDb[] of where this index is stored */
danielk1977a37cdde2004-05-16 11:15:36 +0000726 char *zColAff; /* String defining the affinity of each column */
drh967e8b72000-06-21 13:59:10 +0000727 Index *pNext; /* The next index associated with the same table */
drhd3d39e92004-05-20 22:16:29 +0000728 KeyInfo keyInfo; /* Info on how to order keys. MUST BE LAST */
drh75897232000-05-29 14:26:00 +0000729};
730
731/*
732** Each token coming out of the lexer is an instance of
drh4b59ab52002-08-24 18:24:51 +0000733** this structure. Tokens are also used as part of an expression.
drh4efc4752004-01-16 15:55:37 +0000734**
735** Note if Token.z==0 then Token.dyn and Token.n are undefined and
736** may contain random values. Do not make any assuptions about Token.dyn
737** and Token.n when Token.z==0.
drh75897232000-05-29 14:26:00 +0000738*/
739struct Token {
drh4c755c02004-08-08 20:22:17 +0000740 const unsigned char *z; /* Text of the token. Not NULL-terminated! */
741 unsigned dyn : 1; /* True for malloced memory, false for static */
742 unsigned n : 31; /* Number of characters in this token */
drh75897232000-05-29 14:26:00 +0000743};
744
745/*
746** Each node of an expression in the parse tree is an instance
drh22f70c32002-02-18 01:17:00 +0000747** of this structure.
748**
749** Expr.op is the opcode. The integer parser token codes are reused
750** as opcodes here. For example, the parser defines TK_GE to be an integer
751** code representing the ">=" operator. This same integer code is reused
752** to represent the greater-than-or-equal-to operator in the expression
753** tree.
754**
755** Expr.pRight and Expr.pLeft are subexpressions. Expr.pList is a list
756** of argument if the expression is a function.
757**
drh4b59ab52002-08-24 18:24:51 +0000758** Expr.token is the operator token for this node. For some expressions
759** that have subexpressions, Expr.token can be the complete text that gave
760** rise to the Expr. In the latter case, the token is marked as being
761** a compound token.
drh22f70c32002-02-18 01:17:00 +0000762**
763** An expression of the form ID or ID.ID refers to a column in a table.
764** For such expressions, Expr.op is set to TK_COLUMN and Expr.iTable is
765** the integer cursor number of a VDBE cursor pointing to that table and
766** Expr.iColumn is the column number for the specific column. If the
767** expression is used as a result in an aggregate SELECT, then the
768** value is also stored in the Expr.iAgg column in the aggregate so that
769** it can be accessed after all aggregates are computed.
770**
771** If the expression is a function, the Expr.iTable is an integer code
drh7c972de2003-09-06 22:18:07 +0000772** representing which function. If the expression is an unbound variable
773** marker (a question mark character '?' in the original SQL) then the
774** Expr.iTable holds the index number for that variable.
drh22f70c32002-02-18 01:17:00 +0000775**
776** The Expr.pSelect field points to a SELECT statement. The SELECT might
777** be the right operand of an IN operator. Or, if a scalar SELECT appears
778** in an expression the opcode is TK_SELECT and Expr.pSelect is the only
779** operand.
drh75897232000-05-29 14:26:00 +0000780*/
781struct Expr {
drh1cc093c2002-06-24 22:01:57 +0000782 u8 op; /* Operation performed by this node */
drha9fd84b2004-05-18 23:21:35 +0000783 char affinity; /* The affinity of the column or 0 if not a column */
drhb5a20d32003-04-23 12:25:23 +0000784 u8 iDb; /* Database referenced by this expression */
drhe22a3342003-04-22 20:30:37 +0000785 u8 flags; /* Various flags. See below */
drhf2bc0132004-10-04 13:19:23 +0000786 CollSeq *pColl; /* The collation type of the column or 0 */
drh75897232000-05-29 14:26:00 +0000787 Expr *pLeft, *pRight; /* Left and right subnodes */
drhd99f7062002-06-08 23:25:08 +0000788 ExprList *pList; /* A list of expressions used as function arguments
789 ** or in "<expr> IN (<expr-list)" */
drh75897232000-05-29 14:26:00 +0000790 Token token; /* An operand token */
drh6977fea2002-10-22 23:38:04 +0000791 Token span; /* Complete text of the expression */
drh967e8b72000-06-21 13:59:10 +0000792 int iTable, iColumn; /* When op==TK_COLUMN, then this expr node means the
drh8e2ca022002-06-17 17:07:19 +0000793 ** iColumn-th field of the iTable-th table. */
drh967e8b72000-06-21 13:59:10 +0000794 int iAgg; /* When op==TK_COLUMN and pParse->useAgg==TRUE, pull
795 ** result from the iAgg-th element of the aggregator */
drhd99f7062002-06-08 23:25:08 +0000796 Select *pSelect; /* When the expression is a sub-select. Also the
797 ** right side of "<expr> IN (<select>)" */
drh75897232000-05-29 14:26:00 +0000798};
799
800/*
drh1f162302002-10-27 19:35:33 +0000801** The following are the meanings of bits in the Expr.flags field.
802*/
803#define EP_FromJoin 0x0001 /* Originated in ON or USING clause of a join */
drh1f162302002-10-27 19:35:33 +0000804
805/*
806** These macros can be used to test, set, or clear bits in the
807** Expr.flags field.
808*/
809#define ExprHasProperty(E,P) (((E)->flags&(P))==(P))
810#define ExprHasAnyProperty(E,P) (((E)->flags&(P))!=0)
811#define ExprSetProperty(E,P) (E)->flags|=(P)
812#define ExprClearProperty(E,P) (E)->flags&=~(P)
813
814/*
drh75897232000-05-29 14:26:00 +0000815** A list of expressions. Each expression may optionally have a
816** name. An expr/name combination can be used in several ways, such
817** as the list of "expr AS ID" fields following a "SELECT" or in the
818** list of "ID = expr" items in an UPDATE. A list of expressions can
drhad3cab52002-05-24 02:04:32 +0000819** also be used as the argument to a function, in which case the a.zName
drh75897232000-05-29 14:26:00 +0000820** field is not used.
821*/
822struct ExprList {
823 int nExpr; /* Number of expressions on the list */
drh4305d102003-07-30 12:34:12 +0000824 int nAlloc; /* Number of entries allocated below */
drh6d4abfb2001-10-22 02:58:08 +0000825 struct ExprList_item {
drh75897232000-05-29 14:26:00 +0000826 Expr *pExpr; /* The list of expressions */
827 char *zName; /* Token associated with this expression */
drh8e2ca022002-06-17 17:07:19 +0000828 u8 sortOrder; /* 1 for DESC or 0 for ASC */
829 u8 isAgg; /* True if this is an aggregate like count(*) */
830 u8 done; /* A flag to indicate when processing is finished */
drh75897232000-05-29 14:26:00 +0000831 } *a; /* One entry for each expression */
832};
833
834/*
drhad3cab52002-05-24 02:04:32 +0000835** An instance of this structure can hold a simple list of identifiers,
836** such as the list "a,b,c" in the following statements:
837**
838** INSERT INTO t(a,b,c) VALUES ...;
839** CREATE INDEX idx ON t(a,b,c);
840** CREATE TRIGGER trig BEFORE UPDATE ON t(a,b,c) ...;
841**
842** The IdList.a.idx field is used when the IdList represents the list of
843** column names after a table name in an INSERT statement. In the statement
844**
845** INSERT INTO t(a,b,c) ...
846**
847** If "a" is the k-th column of table "t", then IdList.a[0].idx==k.
drh75897232000-05-29 14:26:00 +0000848*/
849struct IdList {
850 int nId; /* Number of identifiers on the list */
drh4305d102003-07-30 12:34:12 +0000851 int nAlloc; /* Number of entries allocated for a[] below */
drh6d4abfb2001-10-22 02:58:08 +0000852 struct IdList_item {
drhad3cab52002-05-24 02:04:32 +0000853 char *zName; /* Name of the identifier */
drh967e8b72000-06-21 13:59:10 +0000854 int idx; /* Index in some Table.aCol[] of a column named zName */
drhad3cab52002-05-24 02:04:32 +0000855 } *a;
856};
857
858/*
859** The following structure describes the FROM clause of a SELECT statement.
860** Each table or subquery in the FROM clause is a separate element of
861** the SrcList.a[] array.
drhd24cc422003-03-27 12:51:24 +0000862**
863** With the addition of multiple database support, the following structure
864** can also be used to describe a particular table such as the table that
865** is modified by an INSERT, DELETE, or UPDATE statement. In standard SQL,
866** such a table must be a simple name: ID. But in SQLite, the table can
867** now be identified by a database name, a dot, then the table name: ID.ID.
drhad3cab52002-05-24 02:04:32 +0000868*/
869struct SrcList {
drh939a16d2004-07-15 13:37:22 +0000870 i16 nSrc; /* Number of tables or subqueries in the FROM clause */
871 i16 nAlloc; /* Number of entries allocated in a[] below */
drhad3cab52002-05-24 02:04:32 +0000872 struct SrcList_item {
drh113088e2003-03-20 01:16:58 +0000873 char *zDatabase; /* Name of database holding this table */
drhad3cab52002-05-24 02:04:32 +0000874 char *zName; /* Name of the table */
875 char *zAlias; /* The "B" part of a "A AS B" phrase. zName is the "A" */
drhdaffd0e2001-04-11 14:28:42 +0000876 Table *pTab; /* An SQL table corresponding to zName */
877 Select *pSelect; /* A SELECT statement used in place of a table name */
drhad3cab52002-05-24 02:04:32 +0000878 int jointype; /* Type of join between this table and the next */
drh63eb5f22003-04-29 16:20:44 +0000879 int iCursor; /* The VDBE cursor number used to access this table */
drhad3cab52002-05-24 02:04:32 +0000880 Expr *pOn; /* The ON clause of a join */
881 IdList *pUsing; /* The USING clause of a join */
drh113088e2003-03-20 01:16:58 +0000882 } a[1]; /* One entry for each identifier on the list */
drh75897232000-05-29 14:26:00 +0000883};
884
885/*
drh01f3f252002-05-24 16:14:15 +0000886** Permitted values of the SrcList.a.jointype field
887*/
888#define JT_INNER 0x0001 /* Any kind of inner or cross join */
889#define JT_NATURAL 0x0002 /* True for a "natural" join */
drh195e6962002-05-25 00:18:20 +0000890#define JT_LEFT 0x0004 /* Left outer join */
891#define JT_RIGHT 0x0008 /* Right outer join */
drh01f3f252002-05-24 16:14:15 +0000892#define JT_OUTER 0x0010 /* The "OUTER" keyword is present */
893#define JT_ERROR 0x0020 /* unknown or unsupported join type */
894
895/*
drh6b563442001-11-07 16:48:26 +0000896** For each nested loop in a WHERE clause implementation, the WhereInfo
897** structure contains a single instance of this structure. This structure
898** is intended to be private the the where.c module and should not be
899** access or modified by other modules.
900*/
901struct WhereLevel {
902 int iMem; /* Memory cell used by this level */
903 Index *pIdx; /* Index used */
904 int iCur; /* Cursor number used for this index */
drh487ab3c2001-11-08 00:45:21 +0000905 int score; /* How well this indexed scored */
drh6b563442001-11-07 16:48:26 +0000906 int brk; /* Jump here to break out of the loop */
907 int cont; /* Jump here to continue with the next loop cycle */
908 int op, p1, p2; /* Opcode used to terminate the loop */
drhad2d8302002-05-24 20:31:36 +0000909 int iLeftJoin; /* Memory cell used to implement LEFT OUTER JOIN */
910 int top; /* First instruction of interior of the loop */
drhd99f7062002-06-08 23:25:08 +0000911 int inOp, inP1, inP2;/* Opcode used to implement an IN operator */
drhc045ec52002-12-04 20:01:06 +0000912 int bRev; /* Do the scan in the reverse direction */
drh6b563442001-11-07 16:48:26 +0000913};
914
915/*
drh75897232000-05-29 14:26:00 +0000916** The WHERE clause processing routine has two halves. The
917** first part does the start of the WHERE loop and the second
918** half does the tail of the WHERE loop. An instance of
919** this structure is returned by the first half and passed
920** into the second half to give some continuity.
921*/
922struct WhereInfo {
923 Parse *pParse;
drhad3cab52002-05-24 02:04:32 +0000924 SrcList *pTabList; /* List of tables in the join */
drh19a775c2000-06-05 18:54:46 +0000925 int iContinue; /* Jump here to continue with next record */
926 int iBreak; /* Jump here to break out of the loop */
drh6b563442001-11-07 16:48:26 +0000927 int nLevel; /* Number of nested loop */
928 WhereLevel a[1]; /* Information about each nest loop in the WHERE */
drh75897232000-05-29 14:26:00 +0000929};
930
931/*
drh9bb61fe2000-06-05 16:01:39 +0000932** An instance of the following structure contains all information
933** needed to generate code for a single SELECT statement.
drha76b5df2002-02-23 02:32:10 +0000934**
935** The zSelect field is used when the Select structure must be persistent.
936** Normally, the expression tree points to tokens in the original input
937** string that encodes the select. But if the Select structure must live
938** longer than its input string (for example when it is used to describe
939** a VIEW) we have to make a copy of the input string so that the nodes
940** of the expression tree will have something to point to. zSelect is used
941** to hold that copy.
drhd11d3822002-06-21 23:01:49 +0000942**
943** nLimit is set to -1 if there is no LIMIT clause. nOffset is set to 0.
944** If there is a LIMIT clause, the parser sets nLimit to the value of the
945** limit and nOffset to the value of the offset (or 0 if there is not
946** offset). But later on, nLimit and nOffset become the memory locations
947** in the VDBE that record the limit and offset counters.
drh9bb61fe2000-06-05 16:01:39 +0000948*/
949struct Select {
drh9bb61fe2000-06-05 16:01:39 +0000950 ExprList *pEList; /* The fields of the result */
drh7b58dae2003-07-20 01:16:46 +0000951 u8 op; /* One of: TK_UNION TK_ALL TK_INTERSECT TK_EXCEPT */
952 u8 isDistinct; /* True if the DISTINCT keyword is present */
drhad3cab52002-05-24 02:04:32 +0000953 SrcList *pSrc; /* The FROM clause */
drh9bb61fe2000-06-05 16:01:39 +0000954 Expr *pWhere; /* The WHERE clause */
955 ExprList *pGroupBy; /* The GROUP BY clause */
956 Expr *pHaving; /* The HAVING clause */
957 ExprList *pOrderBy; /* The ORDER BY clause */
drh967e8b72000-06-21 13:59:10 +0000958 Select *pPrior; /* Prior select in a compound select statement */
drh9bbca4c2001-11-06 04:00:18 +0000959 int nLimit, nOffset; /* LIMIT and OFFSET values. -1 means not used */
drh7b58dae2003-07-20 01:16:46 +0000960 int iLimit, iOffset; /* Memory registers holding LIMIT & OFFSET counters */
drha76b5df2002-02-23 02:32:10 +0000961 char *zSelect; /* Complete text of the SELECT command */
danielk1977dc1bdc42004-06-11 10:51:27 +0000962 IdList **ppOpenTemp; /* OP_OpenTemp addresses used by multi-selects */
drh9bb61fe2000-06-05 16:01:39 +0000963};
964
965/*
drhfef52082000-06-06 01:50:43 +0000966** The results of a select can be distributed in several ways.
967*/
968#define SRT_Callback 1 /* Invoke a callback with each row of result */
969#define SRT_Mem 2 /* Store result in a memory cell */
drh82c3d632000-06-06 21:56:07 +0000970#define SRT_Set 3 /* Store result as unique keys in a table */
971#define SRT_Union 5 /* Store result as keys in a table */
972#define SRT_Except 6 /* Remove result from a UNION table */
drh5974a302000-06-07 14:42:26 +0000973#define SRT_Table 7 /* Store result as data with a unique key */
drh2d0794e2002-03-03 03:03:52 +0000974#define SRT_TempTable 8 /* Store result in a trasient table */
drhd7489c32002-05-27 12:24:48 +0000975#define SRT_Discard 9 /* Do not save the results anywhere */
drhf46f9052002-06-22 02:33:38 +0000976#define SRT_Sorter 10 /* Store results in the sorter */
drh142e30d2002-08-28 03:00:58 +0000977#define SRT_Subroutine 11 /* Call a subroutine to handle results */
drhfef52082000-06-06 01:50:43 +0000978
979/*
drh22827922000-06-06 17:27:05 +0000980** When a SELECT uses aggregate functions (like "count(*)" or "avg(f1)")
981** we have to do some additional analysis of expressions. An instance
982** of the following structure holds information about a single subexpression
983** somewhere in the SELECT statement. An array of these structures holds
984** all the information we need to generate code for aggregate
985** expressions.
986**
987** Note that when analyzing a SELECT containing aggregates, both
988** non-aggregate field variables and aggregate functions are stored
989** in the AggExpr array of the Parser structure.
990**
991** The pExpr field points to an expression that is part of either the
992** field list, the GROUP BY clause, the HAVING clause or the ORDER BY
993** clause. The expression will be freed when those clauses are cleaned
994** up. Do not try to delete the expression attached to AggExpr.pExpr.
995**
996** If AggExpr.pExpr==0, that means the expression is "count(*)".
997*/
998struct AggExpr {
999 int isAgg; /* if TRUE contains an aggregate function */
1000 Expr *pExpr; /* The expression */
drh0bce8352002-02-28 00:41:10 +00001001 FuncDef *pFunc; /* Information about the aggregate function */
drh22827922000-06-06 17:27:05 +00001002};
1003
1004/*
drhf57b3392001-10-08 13:22:32 +00001005** An SQL parser context. A copy of this structure is passed through
1006** the parser and down into all the parser action routine in order to
1007** carry around information that is global to the entire parse.
drhf1974842004-11-05 03:56:00 +00001008**
1009** The structure is divided into two parts. When the parser and code
1010** generate call themselves recursively, the first part of the structure
1011** is constant but the second part is reset at the beginning and end of
1012** each recursion.
drh75897232000-05-29 14:26:00 +00001013*/
1014struct Parse {
drh9bb575f2004-09-06 17:24:11 +00001015 sqlite3 *db; /* The main database structure */
drh4c504392000-10-16 22:06:40 +00001016 int rc; /* Return code from execution */
drh75897232000-05-29 14:26:00 +00001017 char *zErrMsg; /* An error message */
drh75897232000-05-29 14:26:00 +00001018 Vdbe *pVdbe; /* An engine for executing database bytecode */
drh836faa42003-01-11 13:30:57 +00001019 u8 colNamesSet; /* TRUE after OP_ColumnName has been issued to pVdbe */
drhe0bc4042002-06-25 01:09:11 +00001020 u8 nameClash; /* A permanent table name clashes with temp table name */
drha6ecd332004-06-10 00:29:09 +00001021 u8 checkSchema; /* Causes schema cookie check after an error */
drh205f48e2004-11-05 00:43:11 +00001022 u8 nested; /* Number of nested calls to the parser/code generator */
drh75897232000-05-29 14:26:00 +00001023 int nErr; /* Number of errors seen */
drh832508b2002-03-02 17:04:07 +00001024 int nTab; /* Number of previously allocated VDBE cursors */
drh19a775c2000-06-05 18:54:46 +00001025 int nMem; /* Number of memory cells used so far */
drhfef52082000-06-06 01:50:43 +00001026 int nSet; /* Number of sets used so far */
drh80242052004-06-09 00:48:12 +00001027 u32 cookieMask; /* Bitmask of schema verified databases */
1028 int cookieValue[MAX_ATTACHED+2]; /* Values of cookies to verify */
1029 int cookieGoto; /* Address of OP_Goto to cookie verifier subroutine */
1030 u32 writeMask; /* Start a write transaction on these databases */
drhf1974842004-11-05 03:56:00 +00001031
1032 /* Above is constant between recursions. Below is reset before and after
1033 ** each recursion */
1034
1035 int nVar; /* Number of '?' variables seen in the SQL so far */
1036 int nVarExpr; /* Number of used slots in apVarExpr[] */
1037 int nVarExprAlloc; /* Number of allocated slots in apVarExpr[] */
1038 Expr **apVarExpr; /* Pointers to :aaa and $aaaa wildcard expressions */
1039 u8 explain; /* True if the EXPLAIN flag is found on the query */
1040 u8 useAgg; /* If true, extract field values from the aggregator
1041 ** while generating expressions. Normally false */
1042 int nAgg; /* Number of aggregate expressions */
1043 AggExpr *aAgg; /* An array of aggregate expressions */
1044 Token sErrToken; /* The token at which the error occurred */
1045 Token sNameToken; /* Token with unqualified schema object name */
1046 Token sLastToken; /* The last token parsed */
1047 const char *zSql; /* All SQL text */
1048 const char *zTail; /* All SQL text past the last semicolon parsed */
1049 Table *pNewTable; /* A table being constructed by CREATE TABLE */
1050 Trigger *pNewTrigger; /* Trigger under construct by a CREATE TRIGGER */
1051 TriggerStack *trigStack; /* Trigger actions being coded */
1052 const char *zAuthContext; /* The 6th parameter to db->xAuth callbacks */
drh75897232000-05-29 14:26:00 +00001053};
1054
danielk1977d99bc932002-05-16 00:13:12 +00001055/*
drh85e20962003-04-25 17:52:11 +00001056** An instance of the following structure can be declared on a stack and used
1057** to save the Parse.zAuthContext value so that it can be restored later.
1058*/
1059struct AuthContext {
1060 const char *zAuthContext; /* Put saved Parse.zAuthContext here */
1061 Parse *pParse; /* The Parse structure */
1062};
1063
1064/*
rdcb0c374f2004-02-20 22:53:38 +00001065** Bitfield flags for P2 value in OP_PutIntKey and OP_Delete
1066*/
1067#define OPFLAG_NCHANGE 1 /* Set to update db->nChange */
1068#define OPFLAG_LASTROWID 2 /* Set to update db->lastRowid */
rdcb0c374f2004-02-20 22:53:38 +00001069
1070/*
danielk1977d99bc932002-05-16 00:13:12 +00001071 * Each trigger present in the database schema is stored as an instance of
1072 * struct Trigger.
1073 *
1074 * Pointers to instances of struct Trigger are stored in two ways.
drh9bb575f2004-09-06 17:24:11 +00001075 * 1. In the "trigHash" hash table (part of the sqlite3* that represents the
danielk1977d99bc932002-05-16 00:13:12 +00001076 * database). This allows Trigger structures to be retrieved by name.
1077 * 2. All triggers associated with a single table form a linked list, using the
drhad3cab52002-05-24 02:04:32 +00001078 * pNext member of struct Trigger. A pointer to the first element of the
1079 * linked list is stored as the "pTrigger" member of the associated
1080 * struct Table.
danielk1977d99bc932002-05-16 00:13:12 +00001081 *
drhad3cab52002-05-24 02:04:32 +00001082 * The "step_list" member points to the first element of a linked list
1083 * containing the SQL statements specified as the trigger program.
danielk1977d99bc932002-05-16 00:13:12 +00001084 */
danielk1977c3f9bad2002-05-15 08:30:12 +00001085struct Trigger {
drhdc379452002-05-15 12:45:43 +00001086 char *name; /* The name of the trigger */
1087 char *table; /* The table or view to which the trigger applies */
drhf0f258b2003-04-21 18:48:45 +00001088 u8 iDb; /* Database containing this trigger */
drh79a519c2003-05-17 19:04:03 +00001089 u8 iTabDb; /* Database containing Trigger.table */
drhf0f258b2003-04-21 18:48:45 +00001090 u8 op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT */
1091 u8 tr_tm; /* One of TK_BEFORE, TK_AFTER */
drhdc379452002-05-15 12:45:43 +00001092 Expr *pWhen; /* The WHEN clause of the expresion (may be NULL) */
1093 IdList *pColumns; /* If this is an UPDATE OF <column-list> trigger,
danielk1977d99bc932002-05-16 00:13:12 +00001094 the <column-list> is stored here */
drhdc379452002-05-15 12:45:43 +00001095 int foreach; /* One of TK_ROW or TK_STATEMENT */
drh4312db52003-06-03 01:47:11 +00001096 Token nameToken; /* Token containing zName. Use during parsing only */
danielk1977c3f9bad2002-05-15 08:30:12 +00001097
drhdc379452002-05-15 12:45:43 +00001098 TriggerStep *step_list; /* Link list of trigger program steps */
drhdc379452002-05-15 12:45:43 +00001099 Trigger *pNext; /* Next trigger associated with the table */
danielk1977c3f9bad2002-05-15 08:30:12 +00001100};
1101
danielk1977d99bc932002-05-16 00:13:12 +00001102/*
1103 * An instance of struct TriggerStep is used to store a single SQL statement
1104 * that is a part of a trigger-program.
1105 *
1106 * Instances of struct TriggerStep are stored in a singly linked list (linked
1107 * using the "pNext" member) referenced by the "step_list" member of the
1108 * associated struct Trigger instance. The first element of the linked list is
1109 * the first step of the trigger-program.
1110 *
1111 * The "op" member indicates whether this is a "DELETE", "INSERT", "UPDATE" or
1112 * "SELECT" statement. The meanings of the other members is determined by the
1113 * value of "op" as follows:
1114 *
1115 * (op == TK_INSERT)
1116 * orconf -> stores the ON CONFLICT algorithm
1117 * pSelect -> If this is an INSERT INTO ... SELECT ... statement, then
1118 * this stores a pointer to the SELECT statement. Otherwise NULL.
1119 * target -> A token holding the name of the table to insert into.
1120 * pExprList -> If this is an INSERT INTO ... VALUES ... statement, then
1121 * this stores values to be inserted. Otherwise NULL.
1122 * pIdList -> If this is an INSERT INTO ... (<column-names>) VALUES ...
drhad3cab52002-05-24 02:04:32 +00001123 * statement, then this stores the column-names to be
1124 * inserted into.
danielk1977d99bc932002-05-16 00:13:12 +00001125 *
1126 * (op == TK_DELETE)
1127 * target -> A token holding the name of the table to delete from.
1128 * pWhere -> The WHERE clause of the DELETE statement if one is specified.
1129 * Otherwise NULL.
1130 *
1131 * (op == TK_UPDATE)
1132 * target -> A token holding the name of the table to update rows of.
1133 * pWhere -> The WHERE clause of the UPDATE statement if one is specified.
1134 * Otherwise NULL.
1135 * pExprList -> A list of the columns to update and the expressions to update
danielk19774adee202004-05-08 08:23:19 +00001136 * them to. See sqlite3Update() documentation of "pChanges"
drhad3cab52002-05-24 02:04:32 +00001137 * argument.
danielk1977d99bc932002-05-16 00:13:12 +00001138 *
1139 */
1140struct TriggerStep {
1141 int op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT, TK_SELECT */
1142 int orconf; /* OE_Rollback etc. */
drha69d9162003-04-17 22:57:53 +00001143 Trigger *pTrig; /* The trigger that this step is a part of */
danielk1977c3f9bad2002-05-15 08:30:12 +00001144
danielk1977d99bc932002-05-16 00:13:12 +00001145 Select *pSelect; /* Valid for SELECT and sometimes
1146 INSERT steps (when pExprList == 0) */
1147 Token target; /* Valid for DELETE, UPDATE, INSERT steps */
1148 Expr *pWhere; /* Valid for DELETE, UPDATE steps */
1149 ExprList *pExprList; /* Valid for UPDATE statements and sometimes
1150 INSERT steps (when pSelect == 0) */
1151 IdList *pIdList; /* Valid for INSERT statements only */
1152
1153 TriggerStep * pNext; /* Next in the link-list */
1154};
1155
1156/*
1157 * An instance of struct TriggerStack stores information required during code
1158 * generation of a single trigger program. While the trigger program is being
1159 * coded, its associated TriggerStack instance is pointed to by the
1160 * "pTriggerStack" member of the Parse structure.
1161 *
1162 * The pTab member points to the table that triggers are being coded on. The
1163 * newIdx member contains the index of the vdbe cursor that points at the temp
1164 * table that stores the new.* references. If new.* references are not valid
1165 * for the trigger being coded (for example an ON DELETE trigger), then newIdx
1166 * is set to -1. The oldIdx member is analogous to newIdx, for old.* references.
1167 *
1168 * The ON CONFLICT policy to be used for the trigger program steps is stored
1169 * as the orconf member. If this is OE_Default, then the ON CONFLICT clause
1170 * specified for individual triggers steps is used.
1171 *
1172 * struct TriggerStack has a "pNext" member, to allow linked lists to be
1173 * constructed. When coding nested triggers (triggers fired by other triggers)
1174 * each nested trigger stores its parent trigger's TriggerStack as the "pNext"
1175 * pointer. Once the nested trigger has been coded, the pNext value is restored
1176 * to the pTriggerStack member of the Parse stucture and coding of the parent
1177 * trigger continues.
1178 *
1179 * Before a nested trigger is coded, the linked list pointed to by the
1180 * pTriggerStack is scanned to ensure that the trigger is not about to be coded
1181 * recursively. If this condition is detected, the nested trigger is not coded.
1182 */
1183struct TriggerStack {
1184 Table *pTab; /* Table that triggers are currently being coded on */
1185 int newIdx; /* Index of vdbe cursor to "new" temp table */
1186 int oldIdx; /* Index of vdbe cursor to "old" temp table */
1187 int orconf; /* Current orconf policy */
danielk19776f349032002-06-11 02:25:40 +00001188 int ignoreJump; /* where to jump to for a RAISE(IGNORE) */
drhe22a3342003-04-22 20:30:37 +00001189 Trigger *pTrigger; /* The trigger currently being coded */
1190 TriggerStack *pNext; /* Next trigger down on the trigger stack */
danielk1977d99bc932002-05-16 00:13:12 +00001191};
1192
1193/*
drhf26e09c2003-05-31 16:21:12 +00001194** The following structure contains information used by the sqliteFix...
1195** routines as they walk the parse tree to make database references
1196** explicit.
1197*/
1198typedef struct DbFixer DbFixer;
1199struct DbFixer {
1200 Parse *pParse; /* The parsing context. Error messages written here */
1201 const char *zDb; /* Make sure all objects are contained in this database */
1202 const char *zType; /* Type of the container - used for error messages */
1203 const Token *pName; /* Name of the container - used for error messages */
1204};
1205
1206/*
drh234c39d2004-07-24 03:30:47 +00001207** A pointer to this structure is used to communicate information
1208** from sqlite3Init and OP_ParseSchema into the sqlite3InitCallback.
1209*/
1210typedef struct {
drh9bb575f2004-09-06 17:24:11 +00001211 sqlite3 *db; /* The database being initialized */
drh234c39d2004-07-24 03:30:47 +00001212 char **pzErrMsg; /* Error message stored here */
1213} InitData;
1214
1215
1216/*
danielk1977d99bc932002-05-16 00:13:12 +00001217 * This global flag is set for performance testing of triggers. When it is set
1218 * SQLite will perform the overhead of building new and old trigger references
1219 * even when no triggers exist
1220 */
drh38f82712004-06-18 17:10:16 +00001221extern int sqlite3_always_code_trigger_setup;
danielk1977c3f9bad2002-05-15 08:30:12 +00001222
drh75897232000-05-29 14:26:00 +00001223/*
1224** Internal function prototypes
1225*/
danielk19774adee202004-05-08 08:23:19 +00001226int sqlite3StrICmp(const char *, const char *);
1227int sqlite3StrNICmp(const char *, const char *, int);
1228int sqlite3HashNoCase(const char *, int);
danielk19778a6b5412004-05-24 07:04:25 +00001229int sqlite3IsNumber(const char*, int*, u8);
danielk19774adee202004-05-08 08:23:19 +00001230int sqlite3Compare(const char *, const char *);
1231int sqlite3SortCompare(const char *, const char *);
1232void sqlite3RealToSortable(double r, char *);
drhfaa57ac2004-06-09 14:01:51 +00001233#ifdef SQLITE_DEBUG
danielk19774adee202004-05-08 08:23:19 +00001234 void *sqlite3Malloc_(int,int,char*,int);
1235 void sqlite3Free_(void*,char*,int);
1236 void *sqlite3Realloc_(void*,int,char*,int);
1237 char *sqlite3StrDup_(const char*,char*,int);
1238 char *sqlite3StrNDup_(const char*, int,char*,int);
1239 void sqlite3CheckMemory(void*,int);
drhdcc581c2000-05-30 13:44:19 +00001240#else
drhbdb43832004-06-18 17:45:11 +00001241 void *sqlite3Malloc(int);
1242 void *sqlite3MallocRaw(int);
1243 void sqlite3Free(void*);
1244 void *sqlite3Realloc(void*,int);
1245 char *sqlite3StrDup(const char*);
1246 char *sqlite3StrNDup(const char*, int);
danielk19774adee202004-05-08 08:23:19 +00001247# define sqlite3CheckMemory(a,b)
drhdcc581c2000-05-30 13:44:19 +00001248#endif
drh998da3a2004-06-19 15:22:56 +00001249void sqlite3FreeX(void*);
danielk19774adee202004-05-08 08:23:19 +00001250char *sqlite3MPrintf(const char*, ...);
1251char *sqlite3VMPrintf(const char*, va_list);
drhe54ca3f2004-06-07 01:52:14 +00001252void sqlite3DebugPrintf(const char*, ...);
drhfe63d1c2004-09-08 20:13:04 +00001253void *sqlite3TextToPtr(const char*);
danielk19774adee202004-05-08 08:23:19 +00001254void sqlite3SetString(char **, const char *, ...);
danielk19774adee202004-05-08 08:23:19 +00001255void sqlite3ErrorMsg(Parse*, const char*, ...);
1256void sqlite3Dequote(char*);
1257int sqlite3KeywordCode(const char*, int);
1258int sqlite3RunParser(Parse*, const char*, char **);
drh80242052004-06-09 00:48:12 +00001259void sqlite3FinishCoding(Parse*);
danielk19774adee202004-05-08 08:23:19 +00001260Expr *sqlite3Expr(int, Expr*, Expr*, Token*);
drh4e0cff62004-11-05 05:10:28 +00001261Expr *sqlite3RegisterExpr(Parse*,Token*);
drh91bb0ee2004-09-01 03:06:34 +00001262Expr *sqlite3ExprAnd(Expr*, Expr*);
danielk19774adee202004-05-08 08:23:19 +00001263void sqlite3ExprSpan(Expr*,Token*,Token*);
1264Expr *sqlite3ExprFunction(ExprList*, Token*);
drhfa6bc002004-09-07 16:19:52 +00001265void sqlite3ExprAssignVarNumber(Parse*, Expr*);
danielk19774adee202004-05-08 08:23:19 +00001266void sqlite3ExprDelete(Expr*);
1267ExprList *sqlite3ExprListAppend(ExprList*,Expr*,Token*);
1268void sqlite3ExprListDelete(ExprList*);
drh9bb575f2004-09-06 17:24:11 +00001269int sqlite3Init(sqlite3*, char**);
drh234c39d2004-07-24 03:30:47 +00001270int sqlite3InitCallback(void*, int, char**, char**);
danielk197791cf71b2004-06-26 06:37:06 +00001271void sqlite3Pragma(Parse*,Token*,Token*,Token*,int);
drh9bb575f2004-09-06 17:24:11 +00001272void sqlite3ResetInternalSchema(sqlite3*, int);
danielk19774adee202004-05-08 08:23:19 +00001273void sqlite3BeginParse(Parse*,int);
drh9bb575f2004-09-06 17:24:11 +00001274void sqlite3RollbackInternalChanges(sqlite3*);
1275void sqlite3CommitInternalChanges(sqlite3*);
danielk19774adee202004-05-08 08:23:19 +00001276Table *sqlite3ResultSetOfSelect(Parse*,char*,Select*);
1277void sqlite3OpenMasterTable(Vdbe *v, int);
danielk1977cbb18d22004-05-28 11:37:27 +00001278void sqlite3StartTable(Parse*,Token*,Token*,Token*,int,int);
danielk19774adee202004-05-08 08:23:19 +00001279void sqlite3AddColumn(Parse*,Token*);
1280void sqlite3AddNotNull(Parse*, int);
drh205f48e2004-11-05 00:43:11 +00001281void sqlite3AddPrimaryKey(Parse*, ExprList*, int, int);
danielk19774adee202004-05-08 08:23:19 +00001282void sqlite3AddColumnType(Parse*,Token*,Token*);
danielk19777977a172004-11-09 12:44:37 +00001283void sqlite3AddDefaultValue(Parse*,Expr*);
drhd3d39e92004-05-20 22:16:29 +00001284void sqlite3AddCollateType(Parse*, const char*, int);
danielk19774adee202004-05-08 08:23:19 +00001285void sqlite3EndTable(Parse*,Token*,Select*);
drhb7f91642004-10-31 02:22:47 +00001286
1287#ifndef SQLITE_OMIT_VIEW
1288 void sqlite3CreateView(Parse*,Token*,Token*,Token*,Select*,int);
1289 int sqlite3ViewGetColumnNames(Parse*,Table*);
1290#else
1291# define sqlite3ViewGetColumnNames(A,B) 0
1292#endif
1293
danielk1977a8858102004-05-28 12:11:21 +00001294void sqlite3DropTable(Parse*, SrcList*, int);
drh9bb575f2004-09-06 17:24:11 +00001295void sqlite3DeleteTable(sqlite3*, Table*);
danielk19774adee202004-05-08 08:23:19 +00001296void sqlite3Insert(Parse*, SrcList*, ExprList*, Select*, IdList*, int);
1297IdList *sqlite3IdListAppend(IdList*, Token*);
1298int sqlite3IdListIndex(IdList*,const char*);
1299SrcList *sqlite3SrcListAppend(SrcList*, Token*, Token*);
1300void sqlite3SrcListAddAlias(SrcList*, Token*);
1301void sqlite3SrcListAssignCursors(Parse*, SrcList*);
1302void sqlite3IdListDelete(IdList*);
1303void sqlite3SrcListDelete(SrcList*);
danielk19770202b292004-06-09 09:55:16 +00001304void sqlite3CreateIndex(Parse*,Token*,Token*,SrcList*,ExprList*,int,Token*,
danielk1977ef2cb632004-05-29 02:37:19 +00001305 Token*);
danielk19774adee202004-05-08 08:23:19 +00001306void sqlite3DropIndex(Parse*, SrcList*);
1307void sqlite3AddKeyType(Vdbe*, ExprList*);
1308void sqlite3AddIdxKeyType(Vdbe*, Index*);
danielk1977bf3b7212004-05-18 10:06:24 +00001309int sqlite3Select(Parse*, Select*, int, int, Select*, int, int*, char *aff);
danielk19774adee202004-05-08 08:23:19 +00001310Select *sqlite3SelectNew(ExprList*,SrcList*,Expr*,ExprList*,Expr*,ExprList*,
drh9bbca4c2001-11-06 04:00:18 +00001311 int,int,int);
danielk19774adee202004-05-08 08:23:19 +00001312void sqlite3SelectDelete(Select*);
1313void sqlite3SelectUnbind(Select*);
1314Table *sqlite3SrcListLookup(Parse*, SrcList*);
1315int sqlite3IsReadOnly(Parse*, Table*, int);
drhad6d9462004-09-19 02:15:24 +00001316void sqlite3OpenTableForReading(Vdbe*, int iCur, Table*);
danielk19774adee202004-05-08 08:23:19 +00001317void sqlite3DeleteFrom(Parse*, SrcList*, Expr*);
1318void sqlite3Update(Parse*, SrcList*, ExprList*, Expr*, int);
danielk1977299b1872004-11-22 10:02:10 +00001319WhereInfo *sqlite3WhereBegin(Parse*, SrcList*, Expr*, int, ExprList**);
danielk19774adee202004-05-08 08:23:19 +00001320void sqlite3WhereEnd(WhereInfo*);
1321void sqlite3ExprCode(Parse*, Expr*);
drhf9b596e2004-05-26 16:54:42 +00001322int sqlite3ExprCodeExprList(Parse*, ExprList*);
danielk19774adee202004-05-08 08:23:19 +00001323void sqlite3ExprIfTrue(Parse*, Expr*, int, int);
1324void sqlite3ExprIfFalse(Parse*, Expr*, int, int);
drh205f48e2004-11-05 00:43:11 +00001325void sqlite3NextedParse(Parse*, const char*, ...);
drh9bb575f2004-09-06 17:24:11 +00001326Table *sqlite3FindTable(sqlite3*,const char*, const char*);
danielk19774adee202004-05-08 08:23:19 +00001327Table *sqlite3LocateTable(Parse*,const char*, const char*);
drh9bb575f2004-09-06 17:24:11 +00001328Index *sqlite3FindIndex(sqlite3*,const char*, const char*);
1329void sqlite3UnlinkAndDeleteTable(sqlite3*,int,const char*);
1330void sqlite3UnlinkAndDeleteIndex(sqlite3*,int,const char*);
danielk19774adee202004-05-08 08:23:19 +00001331void sqlite3Vacuum(Parse*, Token*);
drh9bb575f2004-09-06 17:24:11 +00001332int sqlite3RunVacuum(char**, sqlite3*);
drha99db3b2004-06-19 14:49:12 +00001333char *sqlite3NameFromToken(Token*);
danielk19774adee202004-05-08 08:23:19 +00001334int sqlite3ExprCheck(Parse*, Expr*, int, int*);
danielk19774adee202004-05-08 08:23:19 +00001335int sqlite3ExprCompare(Expr*, Expr*);
drhcce7d172000-05-31 15:34:51 +00001336int sqliteFuncId(Token*);
danielk19774adee202004-05-08 08:23:19 +00001337int sqlite3ExprResolveIds(Parse*, SrcList*, ExprList*, Expr*);
drh290c1942004-08-21 17:54:45 +00001338int sqlite3ExprResolveAndCheck(Parse*,SrcList*,ExprList*,Expr*,int,int*);
danielk19774adee202004-05-08 08:23:19 +00001339int sqlite3ExprAnalyzeAggregates(Parse*, Expr*);
1340Vdbe *sqlite3GetVdbe(Parse*);
1341void sqlite3Randomness(int, void*);
drh9bb575f2004-09-06 17:24:11 +00001342void sqlite3RollbackAll(sqlite3*);
danielk19774adee202004-05-08 08:23:19 +00001343void sqlite3CodeVerifySchema(Parse*, int);
drh684917c2004-10-05 02:41:42 +00001344void sqlite3BeginTransaction(Parse*, int);
danielk19774adee202004-05-08 08:23:19 +00001345void sqlite3CommitTransaction(Parse*);
1346void sqlite3RollbackTransaction(Parse*);
1347int sqlite3ExprIsConstant(Expr*);
1348int sqlite3ExprIsInteger(Expr*, int*);
1349int sqlite3IsRowid(const char*);
drh9bb575f2004-09-06 17:24:11 +00001350void sqlite3GenerateRowDelete(sqlite3*, Vdbe*, Table*, int, int);
1351void sqlite3GenerateRowIndexDelete(sqlite3*, Vdbe*, Table*, int, char*);
drh51846b52004-05-28 16:00:21 +00001352void sqlite3GenerateIndexKey(Vdbe*, Index*, int);
danielk19774adee202004-05-08 08:23:19 +00001353void sqlite3GenerateConstraintChecks(Parse*,Table*,int,char*,int,int,int,int);
1354void sqlite3CompleteInsertion(Parse*, Table*, int, char*, int, int, int);
drh290c1942004-08-21 17:54:45 +00001355void sqlite3OpenTableAndIndices(Parse*, Table*, int, int);
danielk19774adee202004-05-08 08:23:19 +00001356void sqlite3BeginWriteOperation(Parse*, int, int);
danielk19774adee202004-05-08 08:23:19 +00001357Expr *sqlite3ExprDup(Expr*);
1358void sqlite3TokenCopy(Token*, Token*);
1359ExprList *sqlite3ExprListDup(ExprList*);
1360SrcList *sqlite3SrcListDup(SrcList*);
1361IdList *sqlite3IdListDup(IdList*);
1362Select *sqlite3SelectDup(Select*);
drh9bb575f2004-09-06 17:24:11 +00001363FuncDef *sqlite3FindFunction(sqlite3*,const char*,int,int,u8,int);
1364void sqlite3RegisterBuiltinFunctions(sqlite3*);
1365void sqlite3RegisterDateTimeFunctions(sqlite3*);
1366int sqlite3SafetyOn(sqlite3*);
1367int sqlite3SafetyOff(sqlite3*);
1368int sqlite3SafetyCheck(sqlite3*);
1369void sqlite3ChangeCookie(sqlite3*, Vdbe*, int);
drhb7f91642004-10-31 02:22:47 +00001370
1371#ifndef SQLITE_OMIT_TRIGGER
1372 void sqlite3BeginTrigger(Parse*, Token*,Token*,int,int,IdList*,SrcList*,
1373 int,Expr*,int);
1374 void sqlite3FinishTrigger(Parse*, TriggerStep*, Token*);
1375 void sqlite3DropTrigger(Parse*, SrcList*);
1376 void sqlite3DropTriggerPtr(Parse*, Trigger*, int);
1377 int sqlite3TriggersExist(Parse* , Trigger* , int , int , int, ExprList*);
1378 int sqlite3CodeRowTrigger(Parse*, int, ExprList*, int, Table *, int, int,
1379 int, int);
1380 void sqliteViewTriggers(Parse*, Table*, Expr*, int, ExprList*);
1381 void sqlite3DeleteTriggerStep(TriggerStep*);
1382 TriggerStep *sqlite3TriggerSelectStep(Select*);
1383 TriggerStep *sqlite3TriggerInsertStep(Token*, IdList*, ExprList*,Select*,int);
1384 TriggerStep *sqlite3TriggerUpdateStep(Token*, ExprList*, Expr*, int);
1385 TriggerStep *sqlite3TriggerDeleteStep(Token*, Expr*);
1386 void sqlite3DeleteTrigger(Trigger*);
1387 void sqlite3UnlinkAndDeleteTrigger(sqlite3*,int,const char*);
1388#else
1389# define sqlite3TriggersExist(A,B,C,D,E,F) 0
1390# define sqlite3DeleteTrigger(A)
1391# define sqlite3DropTriggerPtr(A,B,C)
1392# define sqlite3UnlinkAndDeleteTrigger(A,B,C)
1393# define sqlite3CodeRowTrigger(A,B,C,D,E,F,G,H,I) 0
1394#endif
1395
danielk19774adee202004-05-08 08:23:19 +00001396int sqlite3JoinType(Parse*, Token*, Token*, Token*);
danielk19770202b292004-06-09 09:55:16 +00001397void sqlite3CreateForeignKey(Parse*, ExprList*, Token*, ExprList*, int);
danielk19774adee202004-05-08 08:23:19 +00001398void sqlite3DeferForeignKey(Parse*, int);
drhed6c8672003-01-12 18:02:16 +00001399#ifndef SQLITE_OMIT_AUTHORIZATION
danielk19774adee202004-05-08 08:23:19 +00001400 void sqlite3AuthRead(Parse*,Expr*,SrcList*);
1401 int sqlite3AuthCheck(Parse*,int, const char*, const char*, const char*);
1402 void sqlite3AuthContextPush(Parse*, AuthContext*, const char*);
1403 void sqlite3AuthContextPop(AuthContext*);
drhed6c8672003-01-12 18:02:16 +00001404#else
danielk19774adee202004-05-08 08:23:19 +00001405# define sqlite3AuthRead(a,b,c)
1406# define sqlite3AuthCheck(a,b,c,d,e) SQLITE_OK
1407# define sqlite3AuthContextPush(a,b,c)
1408# define sqlite3AuthContextPop(a) ((void)(a))
drhed6c8672003-01-12 18:02:16 +00001409#endif
drh25d65432004-07-22 15:02:25 +00001410void sqlite3Attach(Parse*, Token*, Token*, int, Token*);
danielk19774adee202004-05-08 08:23:19 +00001411void sqlite3Detach(Parse*, Token*);
drh9bb575f2004-09-06 17:24:11 +00001412int sqlite3BtreeFactory(const sqlite3 *db, const char *zFilename,
drh90f5ecb2004-07-22 01:19:35 +00001413 int omitJournal, int nCache, Btree **ppBtree);
danielk19774adee202004-05-08 08:23:19 +00001414int sqlite3FixInit(DbFixer*, Parse*, int, const char*, const Token*);
1415int sqlite3FixSrcList(DbFixer*, SrcList*);
1416int sqlite3FixSelect(DbFixer*, Select*);
1417int sqlite3FixExpr(DbFixer*, Expr*);
1418int sqlite3FixExprList(DbFixer*, ExprList*);
1419int sqlite3FixTriggerStep(DbFixer*, TriggerStep*);
1420double sqlite3AtoF(const char *z, const char **);
danielk19776f8a5032004-05-10 10:34:51 +00001421char *sqlite3_snprintf(int,char*,const char*,...);
drhfec19aa2004-05-19 20:41:03 +00001422int sqlite3GetInt32(const char *, int*);
drhfec19aa2004-05-19 20:41:03 +00001423int sqlite3FitsIn64Bits(const char *);
danielk19776622cce2004-05-20 11:00:52 +00001424int sqlite3utf16ByteLen(const void *pData, int nChar);
1425int sqlite3utf8CharLen(const char *pData, int nByte);
drh4e5ffc52004-08-31 00:52:37 +00001426int sqlite3ReadUtf8(const unsigned char *);
danielk1977192ac1d2004-05-10 07:17:30 +00001427int sqlite3PutVarint(unsigned char *, u64);
danielk197790e4d952004-05-10 10:05:53 +00001428int sqlite3GetVarint(const unsigned char *, u64 *);
drh6d2fb152004-05-14 16:50:06 +00001429int sqlite3GetVarint32(const unsigned char *, u32 *);
danielk1977192ac1d2004-05-10 07:17:30 +00001430int sqlite3VarintLen(u64 v);
danielk1977a37cdde2004-05-16 11:15:36 +00001431char sqlite3AffinityType(const char *, int);
1432void sqlite3IndexAffinityStr(Vdbe *, Index *);
1433void sqlite3TableAffinityStr(Vdbe *, Table *);
danielk1977e014a832004-05-17 10:48:57 +00001434char sqlite3CompareAffinity(Expr *pExpr, char aff2);
danielk1977e014a832004-05-17 10:48:57 +00001435int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity);
danielk1977bf3b7212004-05-18 10:06:24 +00001436char sqlite3ExprAffinity(Expr *pExpr);
drheb2e1762004-05-27 01:53:56 +00001437int sqlite3atoi64(const char*, i64*);
drh9bb575f2004-09-06 17:24:11 +00001438void sqlite3Error(sqlite3*, int, const char*,...);
danielk1977cbb18d22004-05-28 11:37:27 +00001439void *sqlite3HexToBlob(const char *z);
danielk1977ef2cb632004-05-29 02:37:19 +00001440int sqlite3TwoPartName(Parse *, Token *, Token *, Token **);
danielk1977f20b21c2004-05-31 23:56:42 +00001441const char *sqlite3ErrStr(int);
danielk1977d02eb1f2004-06-06 09:44:03 +00001442int sqlite3ReadUniChar(const char *zStr, int *pOffset, u8 *pEnc, int fold);
danielk19778a414492004-06-29 08:59:35 +00001443int sqlite3ReadSchema(Parse *pParse);
drh9bb575f2004-09-06 17:24:11 +00001444CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char *,int,int);
danielk19770202b292004-06-09 09:55:16 +00001445CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char *zName, int nName);
danielk19777cedc8d2004-06-10 10:50:08 +00001446CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr);
1447int sqlite3CheckCollSeq(Parse *, CollSeq *);
1448int sqlite3CheckIndexCollSeq(Parse *, Index *);
danielk1977d8123362004-06-12 09:25:12 +00001449int sqlite3CheckObjectName(Parse *, const char *);
danielk1977b28af712004-06-21 06:50:26 +00001450void sqlite3VdbeSetChanges(sqlite3 *, int);
danielk1977f4618892004-06-28 13:09:11 +00001451void sqlite3utf16Substr(sqlite3_context *,int,sqlite3_value **);
danielk19774e6af132004-06-10 14:01:08 +00001452
1453const void *sqlite3ValueText(sqlite3_value*, u8);
1454int sqlite3ValueBytes(sqlite3_value*, u8);
danielk1977bfd6cce2004-06-18 04:24:54 +00001455void sqlite3ValueSetStr(sqlite3_value*, int, const void *,u8, void(*)(void*));
danielk19774e6af132004-06-10 14:01:08 +00001456void sqlite3ValueFree(sqlite3_value*);
1457sqlite3_value *sqlite3ValueNew();
drh9bb575f2004-09-06 17:24:11 +00001458sqlite3_value *sqlite3GetTransientValue(sqlite3*db);
drh4e5ffc52004-08-31 00:52:37 +00001459extern const unsigned char sqlite3UpperToLower[];
danielk1977a0bf2652004-11-04 14:30:04 +00001460void sqlite3RootPageMoved(Db*, int, int);
drh4343fea2004-11-05 23:46:15 +00001461void sqlite3Reindex(Parse*, Token*, Token*);
danielk19779fd2a9a2004-11-12 13:42:30 +00001462void sqlite3AlterRenameTable(Parse*, SrcList*, Token*);
1463int sqlite3GetToken(const unsigned char *, int *);
drh2958a4e2004-11-12 03:56:15 +00001464void sqlite3NestedParse(Parse*, const char*, ...);
danielk1977e3026632004-06-22 11:29:02 +00001465
1466#endif