}
/*
- * ExecGetTriggerResultRel
- *
- * Get a ResultRelInfo for a trigger target relation. Most of the time,
- * triggers are fired on one of the result relations of the query, and so
- * we can just return a member of the es_result_relations array, the
- * es_root_result_relations array (if any), or the es_leaf_result_relations
- * list (if any). (Note: in self-join situations there might be multiple
- * members with the same OID; if so it doesn't matter which one we pick.)
+ * ExecGetTriggerResultRel
+ * Get a ResultRelInfo for a trigger target relation.
+ *
+ * Most of the time, triggers are fired on one of the result relations of the
+ * query, and so we can just return a member of the es_result_relations array,
+ * or the es_root_result_relations array (if any), or the
+ * es_tuple_routing_result_relations list (if any). (Note: in self-join
+ * situations there might be multiple members with the same OID; if so it
+ * doesn't matter which one we pick.)
+ *
* However, it is sometimes necessary to fire triggers on other relations;
* this happens mainly when an RI update trigger queues additional triggers
* on other relations, which will be processed in the context of the outer
if (RelationGetRelid(rInfo->ri_RelationDesc) == relid)
return rInfo;
}
+
/* Nope, but maybe we already made an extra ResultRelInfo for it */
foreach(l, estate->es_trig_target_relations)
{
ResultRelInfo *es_result_relation_info; /* currently active array elt */
/*
- * Info about the target partitioned target table root(s) for
- * update/delete queries. They required only to fire any per-statement
- * triggers defined on the table. It exists separately from
- * es_result_relations, because partitioned tables don't appear in the
- * plan tree for the update/delete cases.
+ * Info about the partition root table(s) for insert/update/delete queries
+ * targeting partitioned tables. Only leaf partitions are mentioned in
+ * es_result_relations, but we need access to the roots for firing
+ * triggers and for runtime tuple routing.
*/
ResultRelInfo *es_root_result_relations; /* array of ResultRelInfos */
int es_num_root_result_relations; /* length of the array */