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Fix the NOT NULL logic in the theorem prover that determines when a partial

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index can be used.  Ticket [5c6955204c392ae763a95].

FossilOrigin-Name: c2e439bccc40825e211bfa9a88e6a251ff066ca7453d4e7cb5eab56ce7332635
This commit is contained in:
drh
2019-05-04 17:32:07 +00:00
parent bc8b231098
commit 664d6d139e
5 changed files with 29 additions and 12 deletions
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6
src/expr.c
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@@ -4943,7 +4943,11 @@ int sqlite3ExprImpliesExpr(Parse *pParse, Expr *pE1, Expr *pE2, int iTab){
){
return 1;
}
if( pE2->op==TK_NOTNULL && pE1->op!=TK_ISNULL && pE1->op!=TK_IS ){
if( pE2->op==TK_NOTNULL
&& pE1->op!=TK_ISNULL
&& pE1->op!=TK_IS
&& pE1->op!=TK_OR
){
Expr *pX = sqlite3ExprSkipCollate(pE1->pLeft);
testcase( pX!=pE1->pLeft );
if( sqlite3ExprCompare(pParse, pX, pE2->pLeft, iTab)==0 ) return 1;