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Overview
| Comment: | Avoid assuming that an expression that contains the sub-expression (? IS FALSE) or (? IS TRUE) may only be true if ? is non-null. Fix for [a976c487]. |
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| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | branch-3.30 |
| Files: | files | file ages | folders |
| SHA3-256: |
c6cc2390e91097a32992d11c74af8e77 |
| User & Date: | drh 2019-10-10 16:21:57.122 |
Context
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2019-10-10
| ||
| 20:19 | Version 3.30.1 (check-in: 18db032d05 user: drh tags: release, version-3.30.1, branch-3.30) | |
| 16:21 | Avoid assuming that an expression that contains the sub-expression (? IS FALSE) or (? IS TRUE) may only be true if ? is non-null. Fix for [a976c487]. (check-in: c6cc2390e9 user: drh tags: branch-3.30) | |
| 16:10 | Fix a problem with running ALTER TABLE ADD COLUMN statements within a transaction that writes to one or more virtual tables. Fix for [8fe768e9]. (check-in: a4974a0f95 user: drh tags: branch-3.30) | |
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2019-10-09
| ||
| 21:14 | Avoid assuming that an expression that contains the sub-expression (? IS FALSE) or (? IS TRUE) may only be true if ? is non-null. Fix for [a976c487]. (check-in: eb7ed90b8a user: dan tags: trunk) | |
Changes
Changes to src/expr.c.
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case TK_ISNULL:
case TK_NOTNULL:
case TK_IS:
case TK_OR:
case TK_CASE:
case TK_IN:
case TK_FUNCTION:
testcase( pExpr->op==TK_ISNOT );
testcase( pExpr->op==TK_ISNULL );
testcase( pExpr->op==TK_NOTNULL );
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;
case TK_COLUMN:
if( pWalker->u.iCur==pExpr->iTable ){
pWalker->eCode = 1;
return WRC_Abort;
}
return WRC_Prune;
| > > | 5142 5143 5144 5145 5146 5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 |
case TK_ISNULL:
case TK_NOTNULL:
case TK_IS:
case TK_OR:
case TK_CASE:
case TK_IN:
case TK_FUNCTION:
case TK_TRUTH:
testcase( pExpr->op==TK_ISNOT );
testcase( pExpr->op==TK_ISNULL );
testcase( pExpr->op==TK_NOTNULL );
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 );
testcase( pExpr->op==TK_TRUTH );
return WRC_Prune;
case TK_COLUMN:
if( pWalker->u.iCur==pExpr->iTable ){
pWalker->eCode = 1;
return WRC_Abort;
}
return WRC_Prune;
|
| ︙ | ︙ |
Changes to test/join.test.
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INSERT INTO t1(x) VALUES(0),(1);
SELECT * FROM t1 LEFT JOIN (SELECT abs(1) AS y FROM t1) ON x WHERE NOT(y='a');
} {1 1 1 1}
do_execsql_test join-17.110 {
SELECT * FROM t1 LEFT JOIN (SELECT abs(1)+2 AS y FROM t1) ON x
WHERE NOT(y='a');
} {1 3 1 3}
finish_test
| > > > > > > > > > > > > > > > > > > > > > > | 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 |
INSERT INTO t1(x) VALUES(0),(1);
SELECT * FROM t1 LEFT JOIN (SELECT abs(1) AS y FROM t1) ON x WHERE NOT(y='a');
} {1 1 1 1}
do_execsql_test join-17.110 {
SELECT * FROM t1 LEFT JOIN (SELECT abs(1)+2 AS y FROM t1) ON x
WHERE NOT(y='a');
} {1 3 1 3}
#-------------------------------------------------------------------------
reset_db
do_execsql_test join-18.1 {
CREATE TABLE t0(a);
CREATE TABLE t1(b);
CREATE VIEW v0 AS SELECT a FROM t1 LEFT JOIN t0;
INSERT INTO t1 VALUES (1);
} {}
do_execsql_test join-18.2 {
SELECT * FROM v0 WHERE NOT(v0.a IS FALSE);
} {{}}
do_execsql_test join-18.3 {
SELECT * FROM t1 LEFT JOIN t0 WHERE NOT(a IS FALSE);
} {1 {}}
do_execsql_test join-18.4 {
SELECT NOT(v0.a IS FALSE) FROM v0
} {1}
finish_test
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