Function ExecutorRewind

src/backend/executor/execMain.c:1405–1432

---------------------------------------------------------------- * ExecutorRewind * * This routine may be called on an open queryDesc to rewind it * to the start. * ---------------------------------------------------------------- */

 * ----------------------------------------------------------------
 */
void
ExecutorRewind(QueryDesc *queryDesc)
{
	EState	   *estate;
	MemoryContext oldcontext;

	/* sanity checks */
	Assert(queryDesc != NULL);

	estate = queryDesc->estate;

	Assert(estate != NULL);

	/* It's probably not sensible to rescan updating queries */
	Assert(queryDesc->operation == CMD_SELECT);

	/*
	 * Switch into per-query memory context
	 */
	oldcontext = MemoryContextSwitchTo(estate->es_query_cxt);

	/*
	 * rescan plan
	 */
	ExecReScan(queryDesc->planstate);

	MemoryContextSwitchTo(oldcontext);
}


/*