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When generating individual loops for each ORed term of an OR scan, move any

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constant WHERE expressions outside of the loop, as is done for top-level
loops.

FossilOrigin-Name: e4a022be4b069b08cfdfda5295461676b99d28e17bbbedfbcb362dec69de59bd
This commit is contained in:
dan
2017-06-22 16:51:16 +00:00
parent c45fdb2a7f
commit c456a76fb3
7 changed files with 131 additions and 32 deletions
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10
src/fkey.c
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@@ -633,10 +633,12 @@ static void fkScanChildren(
/* Create VDBE to loop through the entries in pSrc that match the WHERE
** clause. For each row found, increment either the deferred or immediate
** foreign key constraint counter. */
pWInfo = sqlite3WhereBegin(pParse, pSrc, pWhere, 0, 0, 0, 0);
sqlite3VdbeAddOp2(v, OP_FkCounter, pFKey->isDeferred, nIncr);
if( pWInfo ){
sqlite3WhereEnd(pWInfo);
if( pParse->nErr==0 ){
pWInfo = sqlite3WhereBegin(pParse, pSrc, pWhere, 0, 0, 0, 0);
sqlite3VdbeAddOp2(v, OP_FkCounter, pFKey->isDeferred, nIncr);
if( pWInfo ){
sqlite3WhereEnd(pWInfo);
}
}
/* Clean up the WHERE clause constructed above. */