[转]获取SQL SERVER表字段详细信息

--//获取指定表的所有字段信息

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 code /*
表名    表说明 字段序号 字段名    标识 主键    类型    占用字节数 长度 小数位数 允许空  默认值      字段说明                                                                                                                                                                                                                                                          
------- ----- -------  -------- ---- ------- ------ ------- --------------- ------ ---------- ----------
authors       1        au_id          √     id      11     11      0                         
              2        au_lname              varchar 40     40      0                         
              3        au_fname              varchar 20     20      0                         
              4        phone                 char    12     12      0              ('UNKNOWN')
              5        address               varchar 40     40      0       √                
              6        city                  varchar 20     20      0       √                
              7        state                 char    2      2       0       √                
              8        zip                   char    5      5       0       √                
              9        contract              bit     1      1       0                         
（所影响的行数为 9 行）
*/