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Disable early coding of transitive constraints at the end of each loop in

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the WHERE clause processing if the loop being coded is for a LEFT JOIN,
even if the loop is part of an OR-clause optimization for virtual tables.
Test cases in TH3.

FossilOrigin-Name: 9421b442cad9858ec21050c106aa935a1c0723ab08ef9a867a79638b040b6e68
This commit is contained in:
drh
2019-12-28 16:20:23 +00:00
parent 51f2b1719c
commit a4b2df5ce2
3 changed files with 11 additions and 11 deletions
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6
src/wherecode.c
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@@ -1286,8 +1286,8 @@ Bitmask sqlite3WhereCodeOneLoopStart(
VdbeModuleComment((v, "Begin WHERE-loop%d: %s",iLevel,pTabItem->pTab->zName));
#if WHERETRACE_ENABLED /* 0x20800 */
if( sqlite3WhereTrace & 0x800 ){
sqlite3DebugPrintf("Coding level %d of %d: notReady=%llx\n",
iLevel, pWInfo->nLevel, (u64)notReady);
sqlite3DebugPrintf("Coding level %d of %d: notReady=%llx iFrom=%d\n",
iLevel, pWInfo->nLevel, (u64)notReady, pLevel->iFrom);
sqlite3WhereLoopPrint(pLoop, pWC);
}
if( sqlite3WhereTrace & 0x20000 ){
@@ -2381,7 +2381,7 @@ Bitmask sqlite3WhereCodeOneLoopStart(
if( (pTerm->eOperator & (WO_EQ|WO_IS))==0 ) continue;
if( (pTerm->eOperator & WO_EQUIV)==0 ) continue;
if( pTerm->leftCursor!=iCur ) continue;
if( pLevel->iLeftJoin ) continue;
if( pTabItem->fg.jointype & JT_LEFT ) continue;
pE = pTerm->pExpr;
#ifdef WHERETRACE_ENABLED /* 0x800 */
if( sqlite3WhereTrace & 0x800 ){