Function InitPlan

src/backend/executor/execMain.c:1753–2076

---------------------------------------------------------------- * InitPlan * * Initializes the query plan: open files, allocate storage * and start up the rule manager * ---------------------------------------------------------------- */

 * ----------------------------------------------------------------
 */
static void
InitPlan(QueryDesc *queryDesc, int eflags)
{
	CmdType		operation = queryDesc->operation;
	PlannedStmt *plannedstmt = queryDesc->plannedstmt;
	Plan	   *plan = plannedstmt->planTree;
	List	   *rangeTable = plannedstmt->rtable;
	EState	   *estate = queryDesc->estate;
	PlanState  *planstate;
	TupleDesc	tupType;
	ListCell   *l;

	Assert(plannedstmt->intoPolicy == NULL ||
		GpPolicyIsPartitioned(plannedstmt->intoPolicy) ||
		GpPolicyIsReplicated(plannedstmt->intoPolicy));

	if (DEBUG1 >= log_min_messages)
	{
		char msec_str[32];
		switch (check_log_duration(msec_str, false))
		{
			case 1:
			case 2:
				ereport(LOG, (errmsg("duration to InitPlan start: %s ms", msec_str)));
				break;
			default:
				/* do nothing */
				break;
		}
	}

	/*
	 * Do permissions checks
	 */
	if (operation != CMD_SELECT || Gp_role != GP_ROLE_EXECUTE)
	{
		ExecCheckRTPerms(rangeTable, true);
	}

	/*
	 * initialize the node's execution state
	 */
	ExecInitRangeTable(estate, rangeTable);

	estate->es_plannedstmt = plannedstmt;

	/*
	 * Next, build the ExecRowMark array from the PlanRowMark(s), if any.
	 */
	if (plannedstmt->rowMarks)
	{
		estate->es_rowmarks = (ExecRowMark **)
			palloc0(estate->es_range_table_size * sizeof(ExecRowMark *));
		foreach(l, plannedstmt->rowMarks)
		{
			PlanRowMark *rc = (PlanRowMark *) lfirst(l);
			Oid			relid;
			Relation	relation;