Function EvalPlanQualEnd

src/backend/executor/execMain.c:4096–4149

* EvalPlanQualEnd -- shut down at termination of parent plan state node, * or if we are done with the current EPQ child. * * This is a cut-down version of ExecutorEnd(); basically we want to do most * of the normal cleanup, but *not* close result relations (which we are * just sharing from the outer query). We do, however, have to close any * result and trigger target relations that got ope

 * case...)
 */
void
EvalPlanQualEnd(EPQState *epqstate)
{
	EState	   *estate = epqstate->recheckestate;
	Index		rtsize;
	MemoryContext oldcontext;
	ListCell   *l;

	rtsize = epqstate->parentestate->es_range_table_size;

	/*
	 * We may have a tuple table, even if EPQ wasn't started, because we allow
	 * use of EvalPlanQualSlot() without calling EvalPlanQualBegin().
	 */
	if (epqstate->tuple_table != NIL)
	{
		memset(epqstate->relsubs_slot, 0,
			   rtsize * sizeof(TupleTableSlot *));
		ExecResetTupleTable(epqstate->tuple_table, true);
		epqstate->tuple_table = NIL;
	}

	/* EPQ wasn't started, nothing further to do */
	if (estate == NULL)
		return;

	oldcontext = MemoryContextSwitchTo(estate->es_query_cxt);

	ExecEndNode(epqstate->recheckplanstate);

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

		ExecEndNode(subplanstate);
	}

	/* throw away the per-estate tuple table, some node may have used it */
	ExecResetTupleTable(estate->es_tupleTable, false);

	/* Close any result and trigger target relations attached to this EState */
	ExecCloseResultRelations(estate);

	MemoryContextSwitchTo(oldcontext);

	FreeExecutorState(estate);

	/* Mark EPQState idle */
	epqstate->origslot = NULL;
	epqstate->recheckestate = NULL;
	epqstate->recheckplanstate = NULL;
	epqstate->relsubs_rowmark = NULL;
	epqstate->relsubs_done = NULL;
}

/* Use the given attribute map to convert an attribute number in the
 * base relation to an attribute number in the other relation.  Forgive