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Overview
| Comment: | In the query optimizer, when converting BETWEEN and LIKE/GLOB expressions into simpler forms for processing, be sure to transfer the LEFT JOIN markings. Fix for ticket [bc878246eafe0f52c]. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | caab361ebee5f5c3fdafd9b1abe3d1ab |
| User & Date: | drh 2013-08-28 16:27:01 |
References
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2013-08-29
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| 13:21 | In the query optimizer, when converting BETWEEN and LIKE/GLOB expressions into simpler forms for processing, be sure to transfer the LEFT JOIN markings. Fix for ticket [bc878246eafe0f52c]. Cherrypick of [caab361ebe]. check-in: cb667449 user: drh tags: branch-3.8.0 | |
Context
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2013-08-29
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| 13:21 | In the query optimizer, when converting BETWEEN and LIKE/GLOB expressions into simpler forms for processing, be sure to transfer the LEFT JOIN markings. Fix for ticket [bc878246eafe0f52c]. Cherrypick of [caab361ebe]. check-in: cb667449 user: drh tags: branch-3.8.0 | |
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2013-08-28
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| 18:18 | Add the win32-longpath VFS allowing windows filenames up to 32K characters in length. Remove unused code when -DSQLITE_MAX_MMAP_SIZE=0. Fix some compiler warnings on windows. check-in: 12d0a885 user: drh tags: trunk | |
| 16:27 | In the query optimizer, when converting BETWEEN and LIKE/GLOB expressions into simpler forms for processing, be sure to transfer the LEFT JOIN markings. Fix for ticket [bc878246eafe0f52c]. check-in: caab361e user: drh tags: trunk | |
| 13:46 | Increase the version number to 3.8.1 due to the addition of STAT4 support. check-in: 41c089e2 user: drh tags: trunk | |
Changes
Changes to src/where.c.
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#endif /* SQLITE_OMIT_VIRTUALTABLE */
/*
** If the pBase expression originated in the ON or USING clause of
** a join, then transfer the appropriate markings over to derived.
*/
static void transferJoinMarkings(Expr *pDerived, Expr *pBase){
pDerived->flags |= pBase->flags & EP_FromJoin;
pDerived->iRightJoinTable = pBase->iRightJoinTable;
}
#if !defined(SQLITE_OMIT_OR_OPTIMIZATION) && !defined(SQLITE_OMIT_SUBQUERY)
/*
** Analyze a term that consists of two or more OR-connected
** subterms. So in:
**
................................................................................
assert( pList->nExpr==2 );
for(i=0; i<2; i++){
Expr *pNewExpr;
int idxNew;
pNewExpr = sqlite3PExpr(pParse, ops[i],
sqlite3ExprDup(db, pExpr->pLeft, 0),
sqlite3ExprDup(db, pList->a[i].pExpr, 0), 0);
idxNew = whereClauseInsert(pWC, pNewExpr, TERM_VIRTUAL|TERM_DYNAMIC);
testcase( idxNew==0 );
exprAnalyze(pSrc, pWC, idxNew);
pTerm = &pWC->a[idxTerm];
pWC->a[idxNew].iParent = idxTerm;
}
pTerm->nChild = 2;
................................................................................
}
sCollSeqName.z = noCase ? "NOCASE" : "BINARY";
sCollSeqName.n = 6;
pNewExpr1 = sqlite3ExprDup(db, pLeft, 0);
pNewExpr1 = sqlite3PExpr(pParse, TK_GE,
sqlite3ExprAddCollateToken(pParse,pNewExpr1,&sCollSeqName),
pStr1, 0);
idxNew1 = whereClauseInsert(pWC, pNewExpr1, TERM_VIRTUAL|TERM_DYNAMIC);
testcase( idxNew1==0 );
exprAnalyze(pSrc, pWC, idxNew1);
pNewExpr2 = sqlite3ExprDup(db, pLeft, 0);
pNewExpr2 = sqlite3PExpr(pParse, TK_LT,
sqlite3ExprAddCollateToken(pParse,pNewExpr2,&sCollSeqName),
pStr2, 0);
idxNew2 = whereClauseInsert(pWC, pNewExpr2, TERM_VIRTUAL|TERM_DYNAMIC);
testcase( idxNew2==0 );
exprAnalyze(pSrc, pWC, idxNew2);
pTerm = &pWC->a[idxTerm];
if( isComplete ){
pWC->a[idxNew1].iParent = idxTerm;
pWC->a[idxNew2].iParent = idxTerm;
|
> | | > > > > |
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#endif /* SQLITE_OMIT_VIRTUALTABLE */
/*
** If the pBase expression originated in the ON or USING clause of
** a join, then transfer the appropriate markings over to derived.
*/
static void transferJoinMarkings(Expr *pDerived, Expr *pBase){
if( pDerived ){
pDerived->flags |= pBase->flags & EP_FromJoin;
pDerived->iRightJoinTable = pBase->iRightJoinTable;
}
}
#if !defined(SQLITE_OMIT_OR_OPTIMIZATION) && !defined(SQLITE_OMIT_SUBQUERY)
/*
** Analyze a term that consists of two or more OR-connected
** subterms. So in:
**
................................................................................
assert( pList->nExpr==2 );
for(i=0; i<2; i++){
Expr *pNewExpr;
int idxNew;
pNewExpr = sqlite3PExpr(pParse, ops[i],
sqlite3ExprDup(db, pExpr->pLeft, 0),
sqlite3ExprDup(db, pList->a[i].pExpr, 0), 0);
transferJoinMarkings(pNewExpr, pExpr);
idxNew = whereClauseInsert(pWC, pNewExpr, TERM_VIRTUAL|TERM_DYNAMIC);
testcase( idxNew==0 );
exprAnalyze(pSrc, pWC, idxNew);
pTerm = &pWC->a[idxTerm];
pWC->a[idxNew].iParent = idxTerm;
}
pTerm->nChild = 2;
................................................................................
}
sCollSeqName.z = noCase ? "NOCASE" : "BINARY";
sCollSeqName.n = 6;
pNewExpr1 = sqlite3ExprDup(db, pLeft, 0);
pNewExpr1 = sqlite3PExpr(pParse, TK_GE,
sqlite3ExprAddCollateToken(pParse,pNewExpr1,&sCollSeqName),
pStr1, 0);
transferJoinMarkings(pNewExpr1, pExpr);
idxNew1 = whereClauseInsert(pWC, pNewExpr1, TERM_VIRTUAL|TERM_DYNAMIC);
testcase( idxNew1==0 );
exprAnalyze(pSrc, pWC, idxNew1);
pNewExpr2 = sqlite3ExprDup(db, pLeft, 0);
pNewExpr2 = sqlite3PExpr(pParse, TK_LT,
sqlite3ExprAddCollateToken(pParse,pNewExpr2,&sCollSeqName),
pStr2, 0);
transferJoinMarkings(pNewExpr2, pExpr);
idxNew2 = whereClauseInsert(pWC, pNewExpr2, TERM_VIRTUAL|TERM_DYNAMIC);
testcase( idxNew2==0 );
exprAnalyze(pSrc, pWC, idxNew2);
pTerm = &pWC->a[idxTerm];
if( isComplete ){
pWC->a[idxNew1].iParent = idxTerm;
pWC->a[idxNew2].iParent = idxTerm;
|
Changes to test/where9.test.
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SELECT 5 FROM x9 WHERE y IS NULL;
SELECT 6 FROM t91 LEFT JOIN t92 ON a=2 OR b=3 WHERE y IS NULL;
SELECT 7 FROM t91 LEFT JOIN t92 ON a=2 AND b=3 WHERE y IS NULL;
SELECT 8 FROM t91 LEFT JOIN t92 ON a=22 OR b=33 WHERE y IS NULL;
SELECT 9 FROM t91 LEFT JOIN t92 ON a=22 AND b=33 WHERE y IS NULL;
}
} {1 2 3 4 8 9}
finish_test
|
> > > > > > > > > > > > > > > > > > > > > > > > |
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SELECT 5 FROM x9 WHERE y IS NULL;
SELECT 6 FROM t91 LEFT JOIN t92 ON a=2 OR b=3 WHERE y IS NULL;
SELECT 7 FROM t91 LEFT JOIN t92 ON a=2 AND b=3 WHERE y IS NULL;
SELECT 8 FROM t91 LEFT JOIN t92 ON a=22 OR b=33 WHERE y IS NULL;
SELECT 9 FROM t91 LEFT JOIN t92 ON a=22 AND b=33 WHERE y IS NULL;
}
} {1 2 3 4 8 9}
# Fix for ticket [bc878246eafe0f52c519e29049b2fe4a99491b27]
# Incorrect result when OR is used in a join to the right of a LEFT JOIN
#
do_test where9-10.1 {
db eval {
CREATE TABLE t101 (id INTEGER PRIMARY KEY);
INSERT INTO t101 VALUES (1);
SELECT * FROM t101 AS t0
LEFT JOIN t101 AS t1 ON t1.id BETWEEN 10 AND 20
JOIN t101 AS t2 ON (t2.id = t0.id OR (t2.id<>555 AND t2.id=t1.id));
}
} {1 {} 1}
do_test where9-10.2 {
db eval {
CREATE TABLE t102 (id TEXT UNIQUE NOT NULL);
INSERT INTO t102 VALUES ('1');
SELECT * FROM t102 AS t0
LEFT JOIN t102 AS t1 ON t1.id GLOB 'abc%'
JOIN t102 AS t2 ON (t2.id = t0.id OR (t2.id<>555 AND t2.id=t1.id));
}
} {1 {} 1}
finish_test
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