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Do not use an expression index on a generated column if generated column

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has the wrong affinity.  dbsqlfuzz 65f5eb57f8859344d5f1f33e08c77ee12960ed83

FossilOrigin-Name: e95439119ac200cb47d0e277622f41ee7986b364487cd252b485ce5fa030d70f
This commit is contained in:
drh
2023-03-03 15:12:46 +00:00
parent 0b23765b6f
commit dc81902445
7 changed files with 73 additions and 12 deletions
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11
src/expr.c
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@@ -4133,6 +4133,7 @@ static SQLITE_NOINLINE int sqlite3IndexedExprLookup(
IndexedExpr *p;
Vdbe *v;
for(p=pParse->pIdxEpr; p; p=p->pIENext){
u8 exprAff;
int iDataCur = p->iDataCur;
if( iDataCur<0 ) continue;
if( pParse->iSelfTab ){
@@ -4140,6 +4141,16 @@ static SQLITE_NOINLINE int sqlite3IndexedExprLookup(
iDataCur = -1;
}
if( sqlite3ExprCompare(0, pExpr, p->pExpr, iDataCur)!=0 ) continue;
assert( p->aff>=SQLITE_AFF_BLOB && p->aff<=SQLITE_AFF_NUMERIC );
exprAff = sqlite3ExprAffinity(pExpr);
if( (exprAff<=SQLITE_AFF_BLOB && p->aff!=SQLITE_AFF_BLOB)
|| (exprAff==SQLITE_AFF_TEXT && p->aff!=SQLITE_AFF_TEXT)
|| (exprAff>=SQLITE_AFF_NUMERIC && p->aff!=SQLITE_AFF_NUMERIC)
){
/* Affinity mismatch on a generated column */
continue;
}
v = pParse->pVdbe;
assert( v!=0 );
if( p->bMaybeNullRow ){