怎么用SQL语句查询表中自增长列的列名

SELECT * FROM SysColumns WHERE id=Object_Id('tablename') 可以得到列的属性 但是不懂哪个是自增长标识 求解

SQL code

create table tb(id int identity,col varchar(20))
SELECT NAME FROM SYS.COLUMNS WHERE OBJECT_ID=OBJECT_ID('TB') AND IS_IDENTITY=1
/*
NAME
--------------------------------------------------------------------------------------------------------------------------------
id

(1 行受影响)
*/
GO
DROP TABLE TB