Function ExecEndPlan

src/backend/executor/execMain.c:2597–2634

---------------------------------------------------------------- * ExecEndPlan * * Cleans up the query plan -- closes files and frees up storage * * NOTE: we are no longer very worried about freeing storage per se * in this code; FreeExecutorState should be guaranteed to release all * memory that needs to be released. What we are worried about doing * is closing relations and dropping b

 * ----------------------------------------------------------------
 */
void
ExecEndPlan(PlanState *planstate, EState *estate)
{
	ListCell   *l;

	/*
	 * shut down the node-type-specific query processing
	 */
	ExecEndNode(planstate);

	/*
	 * for subplans too
	 */
	foreach(l, estate->es_subplanstates)
	{
		PlanState  *subplanstate = (PlanState *) lfirst(l);

		ExecEndNode(subplanstate);
	}

	/*
	 * destroy the executor's tuple table.  Actually we only care about
	 * releasing buffer pins and tupdesc refcounts; there's no need to pfree
	 * the TupleTableSlots, since the containing memory context is about to go
	 * away anyway.
	 */
	ExecResetTupleTable(estate->es_tupleTable, false);

	/* Adjust INSERT/UPDATE/DELETE count for replicated table ON QD */
	AdjustReplicatedTableCounts(estate);

	/*
	 * Close any Relations that have been opened for range table entries or
	 * result relations.
	 */
	ExecCloseResultRelations(estate);
	ExecCloseRangeTableRelations(estate);
}

/*
 * Close any relations that have been opened for ResultRelInfos.