1616#include "partition_filter.h"
1717#include "planner_tree_modification.h"
1818
19+ #include "access/htup_details.h"
1920#include "miscadmin.h"
2021#include "optimizer/clauses.h"
2122#include "storage/lmgr.h"
23+ #include "utils/lsyscache.h"
2224#include "utils/syscache.h"
2325
2426
@@ -302,9 +304,23 @@ handle_modification_query(Query *parse)
302304
303305LOCKMODE lockmode = RowExclusiveLock ;/* UPDATE | DELETE */
304306
305- /* Make sure that 'child' exists */
307+ HeapTuple syscache_htup ;
308+ char child_relkind ;
309+
310+ /* Lock 'child' table */
306311LockRelationOid (child ,lockmode );
307- if (!SearchSysCacheExists1 (RELOID ,ObjectIdGetDatum (child )))
312+
313+ /* Make sure that 'child' exists */
314+ syscache_htup = SearchSysCache1 (RELOID ,ObjectIdGetDatum (child ));
315+ if (HeapTupleIsValid (syscache_htup ))
316+ {
317+ Form_pg_class reltup = (Form_pg_class )GETSTRUCT (syscache_htup );
318+
319+ /* Fetch child's relkind and free cache entry */
320+ child_relkind = reltup -> relkind ;
321+ ReleaseSysCache (syscache_htup );
322+ }
323+ else
308324{
309325UnlockRelationOid (child ,lockmode );
310326return ;/* nothing to do here */
@@ -327,8 +343,9 @@ handle_modification_query(Query *parse)
327343if (tuple_map )/* just checking the pointer! */
328344return ;
329345
330- /* Update RTE's relid */
346+ /* Update RTE's relidand relkind (for FDW) */
331347rte -> relid = child ;
348+ rte -> relkind = child_relkind ;
332349
333350/* HACK: unset the 'inh' flag (no children) */
334351rte -> inh = false;