Function ExecReScanTableFuncScan

src/backend/executor/nodeTableFuncscan.c:242–265

---------------------------------------------------------------- * ExecReScanTableFuncscan * * Rescans the relation. * ---------------------------------------------------------------- */

 * ----------------------------------------------------------------
 */
void
ExecReScanTableFuncScan(TableFuncScanState *node)
{
	Bitmapset  *chgparam = node->ss.ps.chgParam;

	if (node->ss.ps.ps_ResultTupleSlot)
		ExecClearTuple(node->ss.ps.ps_ResultTupleSlot);
	ExecScanReScan(&node->ss);

	/*
	 * Recompute when parameters are changed.
	 */
	if (chgparam)
	{
		if (node->tupstore != NULL)
		{
			tuplestore_end(node->tupstore);
			node->tupstore = NULL;
		}
	}

	if (node->tupstore != NULL)
		tuplestore_rescan(node->tupstore);
}

/* ----------------------------------------------------------------
 *		tfuncFetchRows