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Overview
| Comment: | Fix a problem causing the LEFT JOIN strength reduction optimization to be incorrectly applied in some cases where the WHERE clause of the query contains a filter expression of the form "lhs.x IS NOT ?". |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: | 1fdaf2c34431adcac1c7ff29aae0623c |
| User & Date: | dan 2018-04-10 15:31:56 |
Context
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2018-04-10
| ||
| 17:39 | Version 3.23.1 check-in: 4bb22940 user: drh tags: trunk, release, version-3.23.1 | |
| 15:31 | Fix a problem causing the LEFT JOIN strength reduction optimization to be incorrectly applied in some cases where the WHERE clause of the query contains a filter expression of the form "lhs.x IS NOT ?". check-in: 1fdaf2c3 user: dan tags: trunk | |
| 14:29 | When testing, avoid injecting an OOM fault into a file-control call made by SQLite on an unopened file-descriptor. check-in: 9c1a5eba user: dan tags: trunk | |
Changes
Changes to src/expr.c.
5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028 5029 5030 5031 5032 5033 5034 |
** a later stage of processing, so the TK_AGG_FUNCTION case does not
** need to be considered here. */
assert( pExpr->op!=TK_AGG_COLUMN );
testcase( pExpr->op==TK_AGG_FUNCTION );
if( ExprHasProperty(pExpr, EP_FromJoin) ) return WRC_Prune;
switch( pExpr->op ){
case TK_NOT:
case TK_ISNULL:
case TK_IS:
case TK_OR:
case TK_CASE:
case TK_IN:
case TK_FUNCTION:
testcase( pExpr->op==TK_ISNULL );
testcase( pExpr->op==TK_IS );
testcase( pExpr->op==TK_OR );
testcase( pExpr->op==TK_CASE );
testcase( pExpr->op==TK_IN );
testcase( pExpr->op==TK_FUNCTION );
return WRC_Prune;
|
> > > |
5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028 5029 5030 5031 5032 5033 5034 5035 5036 5037 |
** a later stage of processing, so the TK_AGG_FUNCTION case does not
** need to be considered here. */
assert( pExpr->op!=TK_AGG_COLUMN );
testcase( pExpr->op==TK_AGG_FUNCTION );
if( ExprHasProperty(pExpr, EP_FromJoin) ) return WRC_Prune;
switch( pExpr->op ){
case TK_ISNOT:
case TK_NOT:
case TK_ISNULL:
case TK_IS:
case TK_OR:
case TK_CASE:
case TK_IN:
case TK_FUNCTION:
testcase( pExpr->op==TK_ISNOT );
testcase( pExpr->op==TK_NOT );
testcase( pExpr->op==TK_ISNULL );
testcase( pExpr->op==TK_IS );
testcase( pExpr->op==TK_OR );
testcase( pExpr->op==TK_CASE );
testcase( pExpr->op==TK_IN );
testcase( pExpr->op==TK_FUNCTION );
return WRC_Prune;
|
Changes to test/join.test.
806 807 808 809 810 811 812 813 814 815 816 817 818 819 |
FROM t1 LEFT JOIN t2
WHERE a IN (1,3,x,y);
} {1 2 {} {} x 3 4 {} {} x}
do_execsql_test join-15.106 {
SELECT *, 'x'
FROM t1 LEFT JOIN t2
WHERE NOT ( 'x'='y' AND t2.y=1 );
} {1 2 {} {} x 3 4 {} {} x}
do_execsql_test join-15.110 {
DROP TABLE t1;
DROP TABLE t2;
CREATE TABLE t1(a INTEGER PRIMARY KEY, b INTEGER);
INSERT INTO t1(a,b) VALUES(1,0),(11,1),(12,1),(13,1),(121,12);
CREATE INDEX t1b ON t1(b);
|
> > > > > |
806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 |
FROM t1 LEFT JOIN t2
WHERE a IN (1,3,x,y);
} {1 2 {} {} x 3 4 {} {} x}
do_execsql_test join-15.106 {
SELECT *, 'x'
FROM t1 LEFT JOIN t2
WHERE NOT ( 'x'='y' AND t2.y=1 );
} {1 2 {} {} x 3 4 {} {} x}
do_execsql_test join-15.107 {
SELECT *, 'x'
FROM t1 LEFT JOIN t2
WHERE t2.y IS NOT 'abc'
} {1 2 {} {} x 3 4 {} {} x}
do_execsql_test join-15.110 {
DROP TABLE t1;
DROP TABLE t2;
CREATE TABLE t1(a INTEGER PRIMARY KEY, b INTEGER);
INSERT INTO t1(a,b) VALUES(1,0),(11,1),(12,1),(13,1),(121,12);
CREATE INDEX t1b ON t1(b);
|