Function compatible_oper_opid

src/backend/parser/parse_oper.c:498–512

compatible_oper_opid() -- get OID of a binary operator * * This is a convenience routine that extracts only the operator OID * from the result of compatible_oper(). InvalidOid is returned if the * lookup fails and noError is true. */

 * lookup fails and noError is true.
 */
Oid
compatible_oper_opid(List *op, Oid arg1, Oid arg2, bool noError)
{
	Operator	optup;
	Oid			result;

	optup = compatible_oper(NULL, op, arg1, arg2, noError, -1);
	if (optup != NULL)
	{
		result = oprid(optup);
		ReleaseSysCache(optup);
		return result;
	}
	return InvalidOid;
}


/* left_oper() -- search for a unary left operator (prefix operator)