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The TK_IF_NULL_ROW expression node must be treated as a variable that

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references the table Expr.iTable.
Proposed fix for ticket [7fde638e94287d2c].

FossilOrigin-Name: 77fc23013cebc7797985864b91d78db5d0e2469511732044ebfaf02b891c979a
This commit is contained in:
drh
2017-05-25 00:08:48 +00:00
parent 831265f962
commit f43ce0b445
5 changed files with 38 additions and 16 deletions
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8
src/expr.c
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@@ -1740,10 +1740,12 @@ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){
testcase( pExpr->op==TK_AGG_COLUMN );
if( pWalker->eCode==3 && pExpr->iTable==pWalker->u.iCur ){
return WRC_Continue;
}else{
pWalker->eCode = 0;
return WRC_Abort;
}
/* Fall through */
case TK_IF_NULL_ROW:
testcase( pExpr->op==TK_IF_NULL_ROW );
pWalker->eCode = 0;
return WRC_Abort;
case TK_VARIABLE:
if( pWalker->eCode==5 ){
/* Silently convert bound parameters that appear inside of CREATE