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Ensure that the JT_LTORJ flag is preserved when flattening a subquery that

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is on the left side of a RIGHT JOIN.

FossilOrigin-Name: ccb61fb1f30e2741b19c1a0cbd2951715224852c86234a3c6a4bbd2e1187634a
This commit is contained in:
drh
2022-04-11 10:38:28 +00:00
parent 8a28ce7bc2
commit 79d2658671
3 changed files with 10 additions and 8 deletions
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4
src/select.c
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@@ -4373,6 +4373,7 @@ static int flattenSubquery(
for(pParent=p; pParent; pParent=pParent->pPrior, pSub=pSub->pPrior){
int nSubSrc;
u8 jointype = 0;
u8 ltorj = pSrc->a[iFrom].fg.jointype & JT_LTORJ;
assert( pSub!=0 );
pSubSrc = pSub->pSrc; /* FROM clause of subquery */
nSubSrc = pSubSrc->nSrc; /* Number of terms in subquery FROM clause */
@@ -4411,10 +4412,11 @@ static int flattenSubquery(
if( pItem->fg.isUsing ) sqlite3IdListDelete(db, pItem->u3.pUsing);
assert( pItem->fg.isTabFunc==0 );
*pItem = pSubSrc->a[i];
pItem->fg.jointype |= ltorj;
iNewParent = pSubSrc->a[i].iCursor;
memset(&pSubSrc->a[i], 0, sizeof(pSubSrc->a[i]));
}
pSrc->a[iFrom].fg.jointype = jointype;
pSrc->a[iFrom].fg.jointype = jointype | ltorj;
/* Now begin substituting subquery result set expressions for
** references to the iParent in the outer query.