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Fix a problem causing the LEFT JOIN strength reduction optimization to be

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incorrectly applied in some cases where the WHERE clause of the query contains
a filter expression of the form NOT(x AND y). Ticket [1e39b966].

FossilOrigin-Name: 38d319c153641ea4138fab2d5a47c31a86f57a071a1e1c299ca54c980cfb2b60
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dan
2018-04-10 12:10:01 +00:00
parent a2ce1b99a8
commit a1054dcc3f
4 changed files with 15 additions and 9 deletions
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1
src/expr.c
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@@ -5018,6 +5018,7 @@ static int impliesNotNullRow(Walker *pWalker, Expr *pExpr){
if( ExprHasProperty(pExpr, EP_FromJoin) ) return WRC_Prune;
switch( pExpr->op ){
case TK_NOT:
case TK_ISNULL:
case TK_IS:
case TK_OR: