Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
| Comment: | Ensure that the expression rewriter inside the query flattener decends into the substructure of the TK_IF_NULL_ROW operator. This is a continuation of the fix for ticket [cad1ab4cb7b0fc344]. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | branch-3.19 |
| Files: | files | file ages | folders |
| SHA3-256: |
28d2902d8f4dfbbfc610f271e00d353b |
| User & Date: | drh 2017-05-23 12:44:57 |
Context
|
2017-05-23
| ||
| 15:33 | Disable the LEFT JOIN flattening optimization for aggregate queries, as it does not currently work. Further fix for ticket [cad1ab4cb7b0fc344]. check-in: 05ada741 user: drh tags: branch-3.19 | |
| 12:44 | Ensure that the expression rewriter inside the query flattener decends into the substructure of the TK_IF_NULL_ROW operator. This is a continuation of the fix for ticket [cad1ab4cb7b0fc344]. check-in: 28d2902d user: drh tags: branch-3.19 | |
| 12:36 | Ensure that the expression rewriter inside the query flattener decends into the substructure of the TK_IF_NULL_ROW operator. This is a continuation of the fix for ticket [cad1ab4cb7b0fc344]. check-in: 941d8142 user: drh tags: trunk | |
| 01:35 | Change the version number to 3.19.1. check-in: 16656b8f user: drh tags: branch-3.19 | |
Changes
Changes to src/select.c.
3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 |
pNew->iRightJoinTable = pExpr->iRightJoinTable;
pNew->flags |= EP_FromJoin;
}
sqlite3ExprDelete(db, pExpr);
pExpr = pNew;
}
}
}else if( pExpr->op==TK_IF_NULL_ROW && pExpr->iTable==pSubst->iTable ){
pExpr->iTable = pSubst->iNewTable;
}else{
pExpr->pLeft = substExpr(pSubst, pExpr->pLeft);
pExpr->pRight = substExpr(pSubst, pExpr->pRight);
if( ExprHasProperty(pExpr, EP_xIsSelect) ){
substSelect(pSubst, pExpr->x.pSelect, 1);
}else{
substExprList(pSubst, pExpr->x.pList);
}
|
> | | < > |
3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 |
pNew->iRightJoinTable = pExpr->iRightJoinTable;
pNew->flags |= EP_FromJoin;
}
sqlite3ExprDelete(db, pExpr);
pExpr = pNew;
}
}
}else{
if( pExpr->op==TK_IF_NULL_ROW && pExpr->iTable==pSubst->iTable ){
pExpr->iTable = pSubst->iNewTable;
}
pExpr->pLeft = substExpr(pSubst, pExpr->pLeft);
pExpr->pRight = substExpr(pSubst, pExpr->pRight);
if( ExprHasProperty(pExpr, EP_xIsSelect) ){
substSelect(pSubst, pExpr->x.pSelect, 1);
}else{
substExprList(pSubst, pExpr->x.pList);
}
|
Changes to test/join.test.
722 723 724 725 726 727 728 729 730 |
} {1 1 1}
do_execsql_test join-14.2 {
SELECT *
FROM (SELECT 1 a) AS x
LEFT JOIN (SELECT 1, * FROM (SELECT * FROM (SELECT * FROM (SELECT 1)))) AS y
JOIN (SELECT * FROM (SELECT 9)) AS z;
} {1 1 1 9}
finish_test
|
> > > > > |
722 723 724 725 726 727 728 729 730 731 732 733 734 735 |
} {1 1 1}
do_execsql_test join-14.2 {
SELECT *
FROM (SELECT 1 a) AS x
LEFT JOIN (SELECT 1, * FROM (SELECT * FROM (SELECT * FROM (SELECT 1)))) AS y
JOIN (SELECT * FROM (SELECT 9)) AS z;
} {1 1 1 9}
do_execsql_test join-14.3 {
SELECT *
FROM (SELECT 111)
LEFT JOIN (SELECT cc+222, * FROM (SELECT * FROM (SELECT 333 cc)));
} {111 555 333}
finish_test
|