diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/executor/execMain.c | 19 | ||||
| -rw-r--r-- | src/include/nodes/execnodes.h | 9 |
2 files changed, 15 insertions, 13 deletions
diff --git a/src/backend/executor/execMain.c b/src/backend/executor/execMain.c index 0a766ef1e5a..ba156f8c5fc 100644 --- a/src/backend/executor/execMain.c +++ b/src/backend/executor/execMain.c @@ -1347,14 +1347,16 @@ InitResultRelInfo(ResultRelInfo *resultRelInfo, } /* - * 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 @@ -1404,6 +1406,7 @@ ExecGetTriggerResultRel(EState *estate, Oid relid) 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) { diff --git a/src/include/nodes/execnodes.h b/src/include/nodes/execnodes.h index 834708944bf..880a03e4e4b 100644 --- a/src/include/nodes/execnodes.h +++ b/src/include/nodes/execnodes.h @@ -508,11 +508,10 @@ typedef struct EState 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 */ |