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Enable push down only for reference table

onur-leftjoin_push-improvements
eaydingol 2025-07-25 14:18:23 +03:00
parent c08c1eb299
commit cd9f6ae313
1 changed files with 3 additions and 16 deletions
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19
src/backend/distributed/planner/recursive_planning.c
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@ -2658,34 +2658,21 @@ hasPseudoconstantQuals(RelationRestrictionContext *relationRestrictionContext)
/*
* IsPushdownSafeForRTEInLeftJoin returns true if the given range table entry
* is safe for pushdown. Currently, we only allow RTE_RELATION and RTE_FUNCTION.
* IsPushdownSafeForRTEInLeftJoin returns true if the given range table entry
* is safe for pushdown. Currently, we only allow reference tables.
*/
bool IsPushdownSafeForRTEInLeftJoin(RangeTblEntry *rte)
{
if (rte->rtekind == RTE_RELATION)
if (IsCitusTable(rte->relid) && IsCitusTableType(rte->relid, REFERENCE_TABLE))
{
return true;
}
/* check if it is a citus table, e.g., ref table */
else if (rte->rtekind == RTE_FUNCTION)
{
RangeTblEntry *newRte = NULL;
if(!ExtractCitusExtradataContainerRTE(rte, &newRte))
{
ereport(DEBUG5, (errmsg("RTE type %d is not safe for pushdown, function but it does not contain citus extradata",
rte->rtekind)));
return false;
}
return true;
}
else
{
ereport(DEBUG5, (errmsg("RTE type %d is not safe for pushdown",
rte->rtekind)));
return false;
}
}