查询显示MSSQL表结构 [转]

SELECT
     表名       = Case When A.colorder= Then D.name Else '' End,
     表说明     = Case When A.colorder= Then isnull(F.value,'') Else '' End,
     字段序号   = A.colorder,
     字段名     = A.name,
     字段说明   = isnull(G.[value],''),
     标识       = Case When COLUMNPROPERTY( A.id,A.name,'IsIdentity')= Then '√'Else '' End,
     主键       = Case When exists(SELECT  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'),),
     允许空     = Case When A.isnullable= Then '√'Else '' End,
     默认值     = isnull(E.Text,'')
 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
 sys.extended_properties  G
 on
     A.id=G.major_id and A.colid=G.minor_id
 Left Join

 sys.extended_properties F
 On
     D.id=F.major_id and F.minor_id=
     --where d.name='OrderInfo'    --如果只查询指定表,加上此条件
 Order By
     A.id,A.colorder

参考：http://www.cnblogs.com/LeeYongze/archive/2012/07/19/2599338.html

    SELECT     表名       = case when a.colorder= then d.name else '' end,
        表说明     = case when a.colorder= 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')= then '√'else '' end,
        主键       = case when exists(SELECT  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'),),
        允许空     = case when a.isnullable= 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 sys.extended_properties   g on     a.id=g.major_id and a.colid=g.minor_id  left join   

    sys.extended_properties f
    on     d.id=f.major_id and f.minor_id=
    where     d.name='shipped_list'    --如果只查询指定表,加上此条件,表名
    order by     a.id,a.colorder  

    --======================================================================================
    select a.name 列名, c.name 数据类型,a.max_length 长度,a.is_nullable 是否为空
      from sys.columns a, sys.tables b, sys.types c
     where a.object_id=b.object_id
        and a.system_type_id=c.system_type_id
        and b.name='Inv_master'--如果只查询指定表,加上此条件,表名
        order by a.column_id  

http://blog.csdn.net/hcf_force/article/details/7666003