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Overview
| Comment: | When determining whether or not a partial index is usable, do not assume that the cursor number assigned to each table in the query is the same as its index in the FROM clause. Fix for ticket [98d973b8f5]. |
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| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
fcebca166f15431764b82a8b267f11d2 |
| User & Date: | dan 2014-08-27 17:37:20.006 |
Context
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2014-08-27
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| 17:48 | Add a missing ticket number to a comment in index7.test. (check-in: d8b1c43361 user: dan tags: trunk) | |
| 17:37 | When determining whether or not a partial index is usable, do not assume that the cursor number assigned to each table in the query is the same as its index in the FROM clause. Fix for ticket [98d973b8f5]. (check-in: fcebca166f user: dan tags: trunk) | |
| 14:14 | In the sqlite3_context object, keep a pointer to the result value rather than storing the result value in the sqlite3_context object and using memcpy() to move the value back into its register after the function returns. This runs faster and saves over 500 bytes of code space. (check-in: 6c1ee3e388 user: drh tags: trunk) | |
Changes
Changes to src/where.c.
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}
#endif /* SQLITE_OMIT_AUTOMATIC_INDEX */
/* Loop over all indices
*/
for(; rc==SQLITE_OK && pProbe; pProbe=pProbe->pNext, iSortIdx++){
if( pProbe->pPartIdxWhere!=0
| | > | 4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 |
}
#endif /* SQLITE_OMIT_AUTOMATIC_INDEX */
/* Loop over all indices
*/
for(; rc==SQLITE_OK && pProbe; pProbe=pProbe->pNext, iSortIdx++){
if( pProbe->pPartIdxWhere!=0
&& !whereUsablePartialIndex(pSrc->iCursor, pWC, pProbe->pPartIdxWhere) ){
testcase( pNew->iTab!=pSrc->iCursor ); /* See ticket [98d973b8f5] */
continue; /* Partial index inappropriate for this query */
}
rSize = pProbe->aiRowLogEst[0];
pNew->u.btree.nEq = 0;
pNew->u.btree.nSkip = 0;
pNew->nLTerm = 0;
pNew->iSortIdx = 0;
|
| ︙ | ︙ |
Changes to test/index7.test.
| ︙ | ︙ | |||
243 244 245 246 247 248 249 250 251 |
do_execsql_test index7-5.0 {
CREATE INDEX t3b ON t3(b) WHERE xyzzy.t3.b BETWEEN 5 AND 10;
/* ^^^^^-- ignored */
ANALYZE;
SELECT count(*) FROM t3 WHERE t3.b BETWEEN 5 AND 10;
SELECT stat+0 FROM sqlite_stat1 WHERE idx='t3b';
} {6 6}
finish_test
| > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 |
do_execsql_test index7-5.0 {
CREATE INDEX t3b ON t3(b) WHERE xyzzy.t3.b BETWEEN 5 AND 10;
/* ^^^^^-- ignored */
ANALYZE;
SELECT count(*) FROM t3 WHERE t3.b BETWEEN 5 AND 10;
SELECT stat+0 FROM sqlite_stat1 WHERE idx='t3b';
} {6 6}
# Verify that the problem identified by ticket [] has been fixed.
#
do_execsql_test index7-6.1 {
CREATE TABLE t5(a, b);
CREATE TABLE t4(c, d);
INSERT INTO t5 VALUES(1, 'xyz');
INSERT INTO t4 VALUES('abc', 'not xyz');
SELECT * FROM (SELECT * FROM t5 WHERE a=1 AND b='xyz'), t4 WHERE c='abc';
} {
1 xyz abc {not xyz}
}
do_execsql_test index7-6.2 {
CREATE INDEX i4 ON t4(c) WHERE d='xyz';
SELECT * FROM (SELECT * FROM t5 WHERE a=1 AND b='xyz'), t4 WHERE c='abc';
} {
1 xyz abc {not xyz}
}
do_execsql_test index7-6.3 {
CREATE VIEW v4 AS SELECT * FROM t4;
INSERT INTO t4 VALUES('def', 'xyz');
SELECT * FROM v4 WHERE d='xyz' AND c='def'
} {
def xyz
}
do_eqp_test index7-6.4 {
SELECT * FROM v4 WHERE d='xyz' AND c='def'
} {
0 0 0 {SEARCH TABLE t4 USING INDEX i4 (c=?)}
}
finish_test
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