drh | 1fe0537 | 2013-07-31 18:12:26 +0000 | [diff] [blame] | 1 | # 2013-07-31 |
| 2 | # |
| 3 | # The author disclaims copyright to this source code. In place of |
| 4 | # a legal notice, here is a blessing: |
| 5 | # |
| 6 | # May you do good and not evil. |
| 7 | # May you find forgiveness for yourself and forgive others. |
| 8 | # May you share freely, never taking more than you give. |
| 9 | # |
| 10 | #*********************************************************************** |
| 11 | # |
| 12 | # Test cases for partial indices |
| 13 | # |
| 14 | |
| 15 | |
| 16 | set testdir [file dirname $argv0] |
| 17 | source $testdir/tester.tcl |
| 18 | |
dan | c3c16cb | 2013-08-20 20:25:03 +0000 | [diff] [blame] | 19 | ifcapable !vtab { |
| 20 | finish_test |
| 21 | return |
| 22 | } |
| 23 | |
drh | 1fe0537 | 2013-07-31 18:12:26 +0000 | [diff] [blame] | 24 | load_static_extension db wholenumber; |
| 25 | do_test index6-1.1 { |
drh | 66518ca | 2013-08-01 15:09:57 +0000 | [diff] [blame] | 26 | # Able to parse and manage partial indices |
drh | 1fe0537 | 2013-07-31 18:12:26 +0000 | [diff] [blame] | 27 | execsql { |
drh | 721dfcf | 2013-08-01 04:39:17 +0000 | [diff] [blame] | 28 | CREATE TABLE t1(a,b,c); |
drh | 1fe0537 | 2013-07-31 18:12:26 +0000 | [diff] [blame] | 29 | CREATE INDEX t1a ON t1(a) WHERE a IS NOT NULL; |
| 30 | CREATE INDEX t1b ON t1(b) WHERE b>10; |
| 31 | CREATE VIRTUAL TABLE nums USING wholenumber; |
drh | 721dfcf | 2013-08-01 04:39:17 +0000 | [diff] [blame] | 32 | INSERT INTO t1(a,b,c) |
| 33 | SELECT CASE WHEN value%3!=0 THEN value END, value, value |
drh | 1fe0537 | 2013-07-31 18:12:26 +0000 | [diff] [blame] | 34 | FROM nums WHERE value<=20; |
| 35 | SELECT count(a), count(b) FROM t1; |
drh | 66518ca | 2013-08-01 15:09:57 +0000 | [diff] [blame] | 36 | PRAGMA integrity_check; |
drh | 1fe0537 | 2013-07-31 18:12:26 +0000 | [diff] [blame] | 37 | } |
drh | 66518ca | 2013-08-01 15:09:57 +0000 | [diff] [blame] | 38 | } {14 20 ok} |
drh | 1fe0537 | 2013-07-31 18:12:26 +0000 | [diff] [blame] | 39 | |
drh | 5f33f37 | 2013-10-04 00:00:12 +0000 | [diff] [blame] | 40 | # Make sure the count(*) optimization works correctly with |
| 41 | # partial indices. Ticket [a5c8ed66cae16243be6] 2013-10-03. |
| 42 | # |
| 43 | do_execsql_test index6-1.1.1 { |
| 44 | SELECT count(*) FROM t1; |
| 45 | } {20} |
| 46 | |
drh | 66518ca | 2013-08-01 15:09:57 +0000 | [diff] [blame] | 47 | # Error conditions during parsing... |
| 48 | # |
drh | 3780be1 | 2013-07-31 19:05:22 +0000 | [diff] [blame] | 49 | do_test index6-1.2 { |
| 50 | catchsql { |
drh | 721dfcf | 2013-08-01 04:39:17 +0000 | [diff] [blame] | 51 | CREATE INDEX bad1 ON t1(a,b) WHERE x IS NOT NULL; |
drh | 3780be1 | 2013-07-31 19:05:22 +0000 | [diff] [blame] | 52 | } |
drh | 721dfcf | 2013-08-01 04:39:17 +0000 | [diff] [blame] | 53 | } {1 {no such column: x}} |
drh | 3780be1 | 2013-07-31 19:05:22 +0000 | [diff] [blame] | 54 | do_test index6-1.3 { |
| 55 | catchsql { |
| 56 | CREATE INDEX bad1 ON t1(a,b) WHERE EXISTS(SELECT * FROM t1); |
| 57 | } |
| 58 | } {1 {subqueries prohibited in partial index WHERE clauses}} |
| 59 | do_test index6-1.4 { |
| 60 | catchsql { |
| 61 | CREATE INDEX bad1 ON t1(a,b) WHERE a!=?1; |
| 62 | } |
| 63 | } {1 {parameters prohibited in partial index WHERE clauses}} |
| 64 | do_test index6-1.5 { |
| 65 | catchsql { |
| 66 | CREATE INDEX bad1 ON t1(a,b) WHERE a!=random(); |
| 67 | } |
drh | a71c743 | 2016-10-03 18:13:23 +0000 | [diff] [blame] | 68 | } {1 {non-deterministic functions prohibited in partial index WHERE clauses}} |
drh | 3780be1 | 2013-07-31 19:05:22 +0000 | [diff] [blame] | 69 | do_test index6-1.6 { |
| 70 | catchsql { |
| 71 | CREATE INDEX bad1 ON t1(a,b) WHERE a NOT LIKE 'abc%'; |
| 72 | } |
drh | a71c743 | 2016-10-03 18:13:23 +0000 | [diff] [blame] | 73 | } {0 {}} |
| 74 | do_execsql_test index6-1.7 { |
| 75 | DROP INDEX IF EXISTS bad1; |
| 76 | } |
drh | 3780be1 | 2013-07-31 19:05:22 +0000 | [diff] [blame] | 77 | |
drh | 8a9789b | 2013-08-01 03:36:59 +0000 | [diff] [blame] | 78 | do_test index6-1.10 { |
| 79 | execsql { |
| 80 | ANALYZE; |
| 81 | SELECT idx, stat FROM sqlite_stat1 ORDER BY idx; |
| 82 | PRAGMA integrity_check; |
| 83 | } |
drh | 721dfcf | 2013-08-01 04:39:17 +0000 | [diff] [blame] | 84 | } {{} 20 t1a {14 1} t1b {10 1} ok} |
drh | 8a9789b | 2013-08-01 03:36:59 +0000 | [diff] [blame] | 85 | |
drh | 66518ca | 2013-08-01 15:09:57 +0000 | [diff] [blame] | 86 | # STAT1 shows the partial indices have a reduced number of |
| 87 | # rows. |
| 88 | # |
drh | 8a9789b | 2013-08-01 03:36:59 +0000 | [diff] [blame] | 89 | do_test index6-1.11 { |
| 90 | execsql { |
| 91 | UPDATE t1 SET a=b; |
| 92 | ANALYZE; |
| 93 | SELECT idx, stat FROM sqlite_stat1 ORDER BY idx; |
| 94 | PRAGMA integrity_check; |
| 95 | } |
drh | 721dfcf | 2013-08-01 04:39:17 +0000 | [diff] [blame] | 96 | } {{} 20 t1a {20 1} t1b {10 1} ok} |
drh | 8a9789b | 2013-08-01 03:36:59 +0000 | [diff] [blame] | 97 | |
| 98 | do_test index6-1.11 { |
| 99 | execsql { |
| 100 | UPDATE t1 SET a=NULL WHERE b%3!=0; |
| 101 | UPDATE t1 SET b=b+100; |
| 102 | ANALYZE; |
| 103 | SELECT idx, stat FROM sqlite_stat1 ORDER BY idx; |
| 104 | PRAGMA integrity_check; |
| 105 | } |
drh | 721dfcf | 2013-08-01 04:39:17 +0000 | [diff] [blame] | 106 | } {{} 20 t1a {6 1} t1b {20 1} ok} |
drh | 8a9789b | 2013-08-01 03:36:59 +0000 | [diff] [blame] | 107 | |
| 108 | do_test index6-1.12 { |
| 109 | execsql { |
| 110 | UPDATE t1 SET a=CASE WHEN b%3!=0 THEN b END; |
| 111 | UPDATE t1 SET b=b-100; |
| 112 | ANALYZE; |
| 113 | SELECT idx, stat FROM sqlite_stat1 ORDER BY idx; |
| 114 | PRAGMA integrity_check; |
| 115 | } |
drh | 721dfcf | 2013-08-01 04:39:17 +0000 | [diff] [blame] | 116 | } {{} 20 t1a {13 1} t1b {10 1} ok} |
drh | 8a9789b | 2013-08-01 03:36:59 +0000 | [diff] [blame] | 117 | |
| 118 | do_test index6-1.13 { |
| 119 | execsql { |
| 120 | DELETE FROM t1 WHERE b BETWEEN 8 AND 12; |
| 121 | ANALYZE; |
| 122 | SELECT idx, stat FROM sqlite_stat1 ORDER BY idx; |
| 123 | PRAGMA integrity_check; |
| 124 | } |
drh | 721dfcf | 2013-08-01 04:39:17 +0000 | [diff] [blame] | 125 | } {{} 15 t1a {10 1} t1b {8 1} ok} |
drh | 8a9789b | 2013-08-01 03:36:59 +0000 | [diff] [blame] | 126 | |
| 127 | do_test index6-1.14 { |
| 128 | execsql { |
| 129 | REINDEX; |
| 130 | ANALYZE; |
| 131 | SELECT idx, stat FROM sqlite_stat1 ORDER BY idx; |
| 132 | PRAGMA integrity_check; |
| 133 | } |
drh | 721dfcf | 2013-08-01 04:39:17 +0000 | [diff] [blame] | 134 | } {{} 15 t1a {10 1} t1b {8 1} ok} |
| 135 | |
| 136 | do_test index6-1.15 { |
| 137 | execsql { |
| 138 | CREATE INDEX t1c ON t1(c); |
| 139 | ANALYZE; |
| 140 | SELECT idx, stat FROM sqlite_stat1 ORDER BY idx; |
| 141 | PRAGMA integrity_check; |
| 142 | } |
| 143 | } {t1a {10 1} t1b {8 1} t1c {15 1} ok} |
drh | 3780be1 | 2013-07-31 19:05:22 +0000 | [diff] [blame] | 144 | |
drh | 66518ca | 2013-08-01 15:09:57 +0000 | [diff] [blame] | 145 | # Queries use partial indices as appropriate times. |
| 146 | # |
| 147 | do_test index6-2.1 { |
| 148 | execsql { |
| 149 | CREATE TABLE t2(a,b); |
| 150 | INSERT INTO t2(a,b) SELECT value, value FROM nums WHERE value<1000; |
dan | 7de2a1f | 2014-04-28 20:11:20 +0000 | [diff] [blame] | 151 | UPDATE t2 SET a=NULL WHERE b%2==0; |
drh | 66518ca | 2013-08-01 15:09:57 +0000 | [diff] [blame] | 152 | CREATE INDEX t2a1 ON t2(a) WHERE a IS NOT NULL; |
| 153 | SELECT count(*) FROM t2 WHERE a IS NOT NULL; |
| 154 | } |
dan | 7de2a1f | 2014-04-28 20:11:20 +0000 | [diff] [blame] | 155 | } {500} |
drh | 66518ca | 2013-08-01 15:09:57 +0000 | [diff] [blame] | 156 | do_test index6-2.2 { |
| 157 | execsql { |
| 158 | EXPLAIN QUERY PLAN |
| 159 | SELECT * FROM t2 WHERE a=5; |
| 160 | } |
| 161 | } {/.* TABLE t2 USING INDEX t2a1 .*/} |
dan | 8ad169a | 2013-08-12 20:14:04 +0000 | [diff] [blame] | 162 | ifcapable stat4||stat3 { |
dan | 7de2a1f | 2014-04-28 20:11:20 +0000 | [diff] [blame] | 163 | execsql ANALYZE |
dan | 3d40759 | 2013-08-07 18:42:27 +0000 | [diff] [blame] | 164 | do_test index6-2.3stat4 { |
drh | 9fe809c | 2013-08-06 19:18:17 +0000 | [diff] [blame] | 165 | execsql { |
| 166 | EXPLAIN QUERY PLAN |
| 167 | SELECT * FROM t2 WHERE a IS NOT NULL; |
| 168 | } |
| 169 | } {/.* TABLE t2 USING INDEX t2a1 .*/} |
| 170 | } else { |
dan | 3d40759 | 2013-08-07 18:42:27 +0000 | [diff] [blame] | 171 | do_test index6-2.3stat4 { |
drh | 9fe809c | 2013-08-06 19:18:17 +0000 | [diff] [blame] | 172 | execsql { |
| 173 | EXPLAIN QUERY PLAN |
| 174 | SELECT * FROM t2 WHERE a IS NOT NULL AND a>0; |
| 175 | } |
| 176 | } {/.* TABLE t2 USING INDEX t2a1 .*/} |
| 177 | } |
drh | 66518ca | 2013-08-01 15:09:57 +0000 | [diff] [blame] | 178 | do_test index6-2.4 { |
| 179 | execsql { |
| 180 | EXPLAIN QUERY PLAN |
| 181 | SELECT * FROM t2 WHERE a IS NULL; |
| 182 | } |
| 183 | } {~/.*INDEX t2a1.*/} |
| 184 | |
| 185 | do_execsql_test index6-2.101 { |
| 186 | DROP INDEX t2a1; |
| 187 | UPDATE t2 SET a=b, b=b+10000; |
| 188 | SELECT b FROM t2 WHERE a=15; |
| 189 | } {10015} |
| 190 | do_execsql_test index6-2.102 { |
| 191 | CREATE INDEX t2a2 ON t2(a) WHERE a<100 OR a>200; |
| 192 | SELECT b FROM t2 WHERE a=15; |
| 193 | PRAGMA integrity_check; |
| 194 | } {10015 ok} |
| 195 | do_execsql_test index6-2.102eqp { |
| 196 | EXPLAIN QUERY PLAN |
| 197 | SELECT b FROM t2 WHERE a=15; |
| 198 | } {~/.*INDEX t2a2.*/} |
| 199 | do_execsql_test index6-2.103 { |
| 200 | SELECT b FROM t2 WHERE a=15 AND a<100; |
| 201 | } {10015} |
| 202 | do_execsql_test index6-2.103eqp { |
| 203 | EXPLAIN QUERY PLAN |
| 204 | SELECT b FROM t2 WHERE a=15 AND a<100; |
| 205 | } {/.*INDEX t2a2.*/} |
| 206 | do_execsql_test index6-2.104 { |
| 207 | SELECT b FROM t2 WHERE a=515 AND a>200; |
| 208 | } {10515} |
| 209 | do_execsql_test index6-2.104eqp { |
| 210 | EXPLAIN QUERY PLAN |
| 211 | SELECT b FROM t2 WHERE a=515 AND a>200; |
| 212 | } {/.*INDEX t2a2.*/} |
| 213 | |
| 214 | # Partial UNIQUE indices |
| 215 | # |
| 216 | do_execsql_test index6-3.1 { |
| 217 | CREATE TABLE t3(a,b); |
| 218 | INSERT INTO t3 SELECT value, value FROM nums WHERE value<200; |
| 219 | UPDATE t3 SET a=999 WHERE b%5!=0; |
| 220 | CREATE UNIQUE INDEX t3a ON t3(a) WHERE a<>999; |
| 221 | } {} |
| 222 | do_test index6-3.2 { |
| 223 | # unable to insert a duplicate row a-value that is not 999. |
| 224 | catchsql { |
| 225 | INSERT INTO t3(a,b) VALUES(150, 'test1'); |
| 226 | } |
drh | f9c8ce3 | 2013-11-05 13:33:55 +0000 | [diff] [blame] | 227 | } {1 {UNIQUE constraint failed: t3.a}} |
drh | 66518ca | 2013-08-01 15:09:57 +0000 | [diff] [blame] | 228 | do_test index6-3.3 { |
| 229 | # can insert multiple rows with a==999 because such rows are not |
| 230 | # part of the unique index. |
| 231 | catchsql { |
| 232 | INSERT INTO t3(a,b) VALUES(999, 'test1'), (999, 'test2'); |
| 233 | } |
| 234 | } {0 {}} |
| 235 | do_execsql_test index6-3.4 { |
| 236 | SELECT count(*) FROM t3 WHERE a=999; |
| 237 | } {162} |
| 238 | integrity_check index6-3.5 |
| 239 | |
drh | 3bf0ac1 | 2013-08-01 16:02:40 +0000 | [diff] [blame] | 240 | do_execsql_test index6-4.0 { |
| 241 | VACUUM; |
| 242 | PRAGMA integrity_check; |
| 243 | } {ok} |
| 244 | |
drh | 1e7d43c | 2013-08-02 14:18:18 +0000 | [diff] [blame] | 245 | # Silently ignore database name qualifiers in partial indices. |
| 246 | # |
| 247 | do_execsql_test index6-5.0 { |
| 248 | CREATE INDEX t3b ON t3(b) WHERE xyzzy.t3.b BETWEEN 5 AND 10; |
| 249 | /* ^^^^^-- ignored */ |
| 250 | ANALYZE; |
| 251 | SELECT count(*) FROM t3 WHERE t3.b BETWEEN 5 AND 10; |
| 252 | SELECT stat+0 FROM sqlite_stat1 WHERE idx='t3b'; |
| 253 | } {6 6} |
| 254 | |
drh | 8774451 | 2014-04-13 19:15:49 +0000 | [diff] [blame] | 255 | # Test case for ticket [2ea3e9fe6379fc3f6ce7e090ce483c1a3a80d6c9] from |
| 256 | # 2014-04-13: Partial index causes assertion fault on UPDATE OR REPLACE. |
| 257 | # |
| 258 | do_execsql_test index6-6.0 { |
| 259 | CREATE TABLE t6(a,b); |
| 260 | CREATE UNIQUE INDEX t6ab ON t1(a,b); |
| 261 | CREATE INDEX t6b ON t6(b) WHERE b=1; |
| 262 | INSERT INTO t6(a,b) VALUES(123,456); |
| 263 | SELECT * FROM t6; |
| 264 | } {123 456} |
| 265 | do_execsql_test index6-6.1 { |
| 266 | UPDATE OR REPLACE t6 SET b=789; |
| 267 | SELECT * FROM t6; |
| 268 | } {123 789} |
| 269 | do_execsql_test index6-6.2 { |
| 270 | PRAGMA integrity_check; |
| 271 | } {ok} |
| 272 | |
drh | e006a86 | 2015-02-24 18:39:00 +0000 | [diff] [blame] | 273 | # Test case for ticket [2326c258d02ead33d69faa63de8f4686b9b1b9d9] on |
| 274 | # 2015-02-24. Any use of a partial index qualifying constraint inside |
| 275 | # the ON clause of a LEFT JOIN was causing incorrect results for all |
| 276 | # versions of SQLite 3.8.0 through 3.8.8. |
| 277 | # |
| 278 | do_execsql_test index6-7.0 { |
| 279 | CREATE TABLE t7a(x); |
| 280 | CREATE TABLE t7b(y); |
| 281 | INSERT INTO t7a(x) VALUES(1); |
| 282 | CREATE INDEX t7ax ON t7a(x) WHERE x=99; |
| 283 | PRAGMA automatic_index=OFF; |
| 284 | SELECT * FROM t7a LEFT JOIN t7b ON (x=99) ORDER BY x; |
| 285 | } {1 {}} |
| 286 | do_execsql_test index6-7.1 { |
| 287 | INSERT INTO t7b(y) VALUES(2); |
| 288 | SELECT * FROM t7a JOIN t7b ON (x=99) ORDER BY x; |
| 289 | } {} |
| 290 | do_execsql_test index6-7.2 { |
| 291 | INSERT INTO t7a(x) VALUES(99); |
| 292 | SELECT * FROM t7a LEFT JOIN t7b ON (x=99) ORDER BY x; |
| 293 | } {1 {} 99 2} |
| 294 | do_execsql_test index6-7.3 { |
| 295 | SELECT * FROM t7a JOIN t7b ON (x=99) ORDER BY x; |
| 296 | } {99 2} |
| 297 | do_execsql_test index6-7.4 { |
| 298 | EXPLAIN QUERY PLAN |
| 299 | SELECT * FROM t7a JOIN t7b ON (x=99) ORDER BY x; |
| 300 | } {/USING COVERING INDEX t7ax/} |
drh | 8774451 | 2014-04-13 19:15:49 +0000 | [diff] [blame] | 301 | |
dan | 2a45cb5 | 2015-02-24 20:10:49 +0000 | [diff] [blame] | 302 | |
| 303 | do_execsql_test index6-8.0 { |
| 304 | CREATE TABLE t8a(a,b); |
| 305 | CREATE TABLE t8b(x,y); |
| 306 | CREATE INDEX i8c ON t8b(y) WHERE x = 'value'; |
| 307 | |
| 308 | INSERT INTO t8a VALUES(1, 'one'); |
| 309 | INSERT INTO t8a VALUES(2, 'two'); |
| 310 | INSERT INTO t8a VALUES(3, 'three'); |
| 311 | |
| 312 | INSERT INTO t8b VALUES('value', 1); |
| 313 | INSERT INTO t8b VALUES('dummy', 2); |
| 314 | INSERT INTO t8b VALUES('value', 3); |
| 315 | INSERT INTO t8b VALUES('dummy', 4); |
| 316 | } {} |
| 317 | |
| 318 | do_eqp_test index6-8.1 { |
| 319 | SELECT * FROM t8a LEFT JOIN t8b ON (x = 'value' AND y = a) |
| 320 | } { |
| 321 | 0 0 0 {SCAN TABLE t8a} |
| 322 | 0 1 1 {SEARCH TABLE t8b USING INDEX i8c (y=?)} |
| 323 | } |
| 324 | |
| 325 | do_execsql_test index6-8.2 { |
| 326 | SELECT * FROM t8a LEFT JOIN t8b ON (x = 'value' AND y = a) |
| 327 | } { |
| 328 | 1 one value 1 |
| 329 | 2 two {} {} |
| 330 | 3 three value 3 |
| 331 | } |
| 332 | |
drh | 72bc820 | 2015-06-11 13:58:35 +0000 | [diff] [blame] | 333 | # 2015-06-11. Assertion fault found by AFL |
| 334 | # |
| 335 | do_execsql_test index6-9.1 { |
| 336 | CREATE TABLE t9(a int, b int, c int); |
| 337 | CREATE INDEX t9ca ON t9(c,a) WHERE a in (10,12,20); |
| 338 | INSERT INTO t9 VALUES(1,1,9),(10,2,35),(11,15,82),(20,19,5),(NULL,7,3); |
| 339 | UPDATE t9 SET b=c WHERE a in (10,12,20); |
| 340 | SELECT a,b,c,'|' FROM t9 ORDER BY a; |
| 341 | } {{} 7 3 | 1 1 9 | 10 35 35 | 11 15 82 | 20 5 5 |} |
| 342 | do_execsql_test index6-9.2 { |
| 343 | DROP TABLE t9; |
| 344 | CREATE TABLE t9(a int, b int, c int, PRIMARY KEY(a)) WITHOUT ROWID; |
| 345 | CREATE INDEX t9ca ON t9(c,a) WHERE a in (10,12,20); |
| 346 | INSERT INTO t9 VALUES(1,1,9),(10,2,35),(11,15,82),(20,19,5); |
| 347 | UPDATE t9 SET b=c WHERE a in (10,12,20); |
| 348 | SELECT a,b,c,'|' FROM t9 ORDER BY a; |
| 349 | } {1 1 9 | 10 35 35 | 11 15 82 | 20 5 5 |} |
| 350 | |
drh | cf599b6 | 2015-08-07 20:57:00 +0000 | [diff] [blame] | 351 | # AND-connected terms in the WHERE clause of a partial index |
| 352 | # |
| 353 | do_execsql_test index6-10.1 { |
| 354 | CREATE TABLE t10(a,b,c,d,e INTEGER PRIMARY KEY); |
| 355 | INSERT INTO t10 VALUES |
| 356 | (1,2,3,4,5), |
| 357 | (2,3,4,5,6), |
| 358 | (3,4,5,6,7), |
| 359 | (1,2,3,8,9); |
| 360 | CREATE INDEX t10x ON t10(d) WHERE a=1 AND b=2 AND c=3; |
| 361 | SELECT e FROM t10 WHERE a=1 AND b=2 AND c=3 ORDER BY d; |
| 362 | } {5 9} |
| 363 | do_execsql_test index6-10.1eqp { |
| 364 | EXPLAIN QUERY PLAN |
| 365 | SELECT e FROM t10 WHERE a=1 AND b=2 AND c=3 ORDER BY d; |
| 366 | } {/USING INDEX t10x/} |
| 367 | do_execsql_test index6-10.2 { |
| 368 | SELECT e FROM t10 WHERE c=3 AND 2=b AND a=1 ORDER BY d DESC; |
| 369 | } {9 5} |
| 370 | do_execsql_test index6-10.2eqp { |
| 371 | EXPLAIN QUERY PLAN |
| 372 | SELECT e FROM t10 WHERE c=3 AND 2=b AND a=1 ORDER BY d DESC; |
| 373 | } {/USING INDEX t10x/} |
| 374 | do_execsql_test index6-10.3 { |
| 375 | SELECT e FROM t10 WHERE a=1 AND b=2 ORDER BY d DESC; |
| 376 | } {9 5} |
| 377 | do_execsql_test index6-10.3eqp { |
| 378 | EXPLAIN QUERY PLAN |
| 379 | SELECT e FROM t10 WHERE a=1 AND b=2 ORDER BY d DESC; |
| 380 | } {~/USING INDEX t10x/} |
drh | 72bc820 | 2015-06-11 13:58:35 +0000 | [diff] [blame] | 381 | |
drh | 8dc570b | 2016-06-08 18:07:21 +0000 | [diff] [blame] | 382 | # A partial index will be used for a full table scan, where possible |
| 383 | do_execsql_test index6-11.1 { |
| 384 | CREATE TABLE t11(a,b,c); |
| 385 | CREATE INDEX t11x ON t11(a) WHERE b<>99; |
| 386 | EXPLAIN QUERY PLAN SELECT a FROM t11 WHERE b<>99; |
| 387 | } {/USING INDEX t11x/} |
| 388 | do_execsql_test index6-11.2 { |
| 389 | EXPLAIN QUERY PLAN SELECT a FROM t11 WHERE b<>99 AND c<>98; |
| 390 | } {/USING INDEX t11x/} |
| 391 | |
| 392 | |
drh | 1fe0537 | 2013-07-31 18:12:26 +0000 | [diff] [blame] | 393 | finish_test |