Function ExecPostprocessPlan

src/backend/executor/execMain.c:2539–2583

---------------------------------------------------------------- * ExecPostprocessPlan * * Give plan nodes a final chance to execute before shutdown * ---------------------------------------------------------------- */

 * ----------------------------------------------------------------
 */
static void
ExecPostprocessPlan(EState *estate)
{
	ListCell   *lc;

	/*
	 * Make sure nodes run forward.
	 */
	estate->es_direction = ForwardScanDirection;

	if (Gp_role == GP_ROLE_DISPATCH)
	{
		/* Fire after triggers. */
		foreach(lc, estate->es_auxmodifytables)
		{
			PlanState  *ps = (PlanState *) lfirst(lc);
			ModifyTableState *node = castNode(ModifyTableState, ps);

			fireASTriggers(node);
		}
		return;
	}
	/*
	 * Run any secondary ModifyTable nodes to completion, in case the main
	 * query did not fetch all rows from them.  (We do this to ensure that
	 * such nodes have predictable results.)
	 */
	foreach(lc, estate->es_auxmodifytables)
	{
		PlanState  *ps = (PlanState *) lfirst(lc);

		for (;;)
		{
			TupleTableSlot *slot;

			/* Reset the per-output-tuple exprcontext each time */
			ResetPerTupleExprContext(estate);

			slot = ExecProcNode(ps);

			if (TupIsNull(slot))
				break;
		}
	}
}

/* ----------------------------------------------------------------
 *		ExecEndPlan