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Allow a HAVING clause on any aggregate query, even if there is no GROUP BY

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clause.  This brings SQLite into closer agreement with PostgreSQL and fixes
the concern raised by 
[forum:/forumpost/1a7fea4651|forum post 1a7fea4651].

FossilOrigin-Name: 9322a7c21f1c22ba00e9b889223e89bc1591db6e561ce05091e905e98c1bf2b3
This commit is contained in:
drh
2022-06-21 13:41:24 +00:00
parent 4af6462fb8
commit b9294de1e6
6 changed files with 26 additions and 19 deletions
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4
src/resolve.c
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@@ -1824,8 +1824,8 @@ static int resolveSelectStep(Walker *pWalker, Select *p){
sNC.uNC.pEList = p->pEList;
sNC.ncFlags |= NC_UEList;
if( p->pHaving ){
if( !pGroupBy ){
sqlite3ErrorMsg(pParse, "a GROUP BY clause is required before HAVING");
if( (p->selFlags & SF_Aggregate)==0 ){
sqlite3ErrorMsg(pParse, "HAVING clause on a non-aggregate query");
return WRC_Abort;
}
if( sqlite3ResolveExprNames(&sNC, p->pHaving) ) return WRC_Abort;