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Experimental changes to improve optimization of DISTINCT queries.

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FossilOrigin-Name: f7ba0219ef2f235543c258be736955d91ca5ecce
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dan
2011-06-30 20:17:15 +00:00
parent e1b4f0f177
commit 38cc40c216
14 changed files with 219 additions and 66 deletions
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4
src/update.c
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@@ -311,7 +311,9 @@ void sqlite3Update(
/* Begin the database scan
*/
sqlite3VdbeAddOp2(v, OP_Null, 0, regOldRowid);
pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere,0, WHERE_ONEPASS_DESIRED);
pWInfo = sqlite3WhereBegin(
pParse, pTabList, pWhere, 0, 0, WHERE_ONEPASS_DESIRED
);
if( pWInfo==0 ) goto update_cleanup;
okOnePass = pWInfo->okOnePass;