学步园

--sql server 2000

--feixianxxx

--sql server 2000
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

--sql server 2005

--wzy_love_sly

declare @tbname varchar(100)
set @tbname='tb'

Select a.name as 字段名,
b.name as 数据类型,
a.length as 长度,
是否主键=case when a.colid in(select colid from sys.sysindexkeys where indid=1 and id=object_id(@tbname)) then '是主键' else '不是主键' end,
是否可为空=case when a.status & 0x08 >0 then '是' else '否' end
from syscolumns a inner join systypes b on a.usertype = b.usertype
where a.id = object_id(@tbname)