求助，怎样在系统表中查找某一列的属性为IDENTITY,即该列是自动增加的?
在系统表中查找某个表的一个列是自动增加的列，sql语句怎么写？我只能查找到该列的长度，类型，字段说明，可是怎么知道这个列是自动增加的列呢？

------解决方案--------------------
select * from syscolumns where status = 128

status = 128 就是表示的IDENTITY
------解决方案--------------------
如果是Sql2005可以简单一点用系统试图

if exists (select * from sys.columns where is_identity = 1 and object_id = OBJECT_ID( '表名 '))
print '是IDENTITY '
else
print '不是IDENTITY '

------解决方案--------------------
查出表的各个字段的所有属性

SELECT
表名 = case when a.colorder=1 then d.name else ' ' end,
表说明 = case when a.colorder=1 then isnull(f.value, ' ') else ' ' end,
字段序号 = a.colorder,
字段名 = a.name,
标识 = case when COLUMNPROPERTY( a.id,a.name, 'IsIdentity ')=1 then '√ 'else ' ' end,
主键 = case when exists(SELECT 1 FROM sysobjects where xtype= 'PK ' and parent_obj=a.id and name in (
SELECT name FROM sysindexes WHERE indid in(
SELECT indid FROM sysindexkeys WHERE id = a.id AND colid=a.colid))) then '√ ' else ' ' end,
类型 = b.name,
占用字节数 = a.length,
长度 = COLUMNPROPERTY(a.id,a.name, 'PRECISION '),
小数位数 = isnull(COLUMNPROPERTY(a.id,a.name, 'Scale '),0),
允许空 = case when a.isnullable=1 then '√ 'else ' ' end,
默认值 = isnull(e.text, ' '),
字段说明 = isnull(g.[value], ' ')
FROM
syscolumns a
left join
systypes b
on
a.xusertype=b.xusertype
inner join
sysobjects d
on
a.id=d.id and d.xtype= 'U ' and d.name <> 'dtproperties '
left join
syscomments e
on
a.cdefault=e.id
left join
sysproperties g
on
a.id=g.id and a.colid=g.smallid
left join
sysproperties f
on
d.id=f.id and f.smallid=0
where
d.name= '要查询的表 ' --如果只查询指定表,加上此条件
order by
a.id,a.colorder