Function ExecPrepareExprList

src/backend/executor/execExpr.c:831–851

* Call ExecPrepareExpr() on each member of a list of Exprs, and return * a list of ExprStates. * * See ExecPrepareExpr() for details. */

 * See ExecPrepareExpr() for details.
 */
List *
ExecPrepareExprList(List *nodes, EState *estate)
{
	List	   *result = NIL;
	MemoryContext oldcontext;
	ListCell   *lc;

	/* Ensure that the list cell nodes are in the right context too */
	oldcontext = MemoryContextSwitchTo(estate->es_query_cxt);

	foreach(lc, nodes)
	{
		Expr	   *e = (Expr *) lfirst(lc);

		result = lappend(result, ExecPrepareExpr(e, estate));
	}

	MemoryContextSwitchTo(oldcontext);

	return result;
}

/*
 * ExecCheck - evaluate a check constraint