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Disable the query flattener optimization for SELECT statements that are on

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the RHS of vector IN operators.  This is a hack that fixes the bug
described in ticket [da7841375186386c]. A better solution that does not
disable the query flattener is needed, but this will server for the time
being.

FossilOrigin-Name: 005d5b870625d175fdf3c0e87d974006c569d9e1
This commit is contained in:
drh
2016-11-17 13:13:25 +00:00
parent d2d69cc1fa
commit 54cda4edbe
4 changed files with 25 additions and 8 deletions
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3
src/wherecode.c
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@ -446,6 +446,7 @@ static int codeEqualityTerm(
}else{
Select *pSelect = pX->x.pSelect;
sqlite3 *db = pParse->db;
u16 savedDbOptFlags = db->dbOptFlags;
ExprList *pOrigRhs = pSelect->pEList;
ExprList *pOrigLhs = pX->pLeft->x.pList;
ExprList *pRhs = 0; /* New Select.pEList for RHS */
@ -489,7 +490,9 @@ static int codeEqualityTerm(
testcase( aiMap==0 );
}
pSelect->pEList = pRhs;
db->dbOptFlags |= SQLITE_QueryFlattener;
eType = sqlite3FindInIndex(pParse, pX, IN_INDEX_LOOP, 0, aiMap);
db->dbOptFlags = savedDbOptFlags;
testcase( aiMap!=0 && aiMap[0]!=0 );
pSelect->pEList = pOrigRhs;
pLeft->x.pList = pOrigLhs;