sql server 获取每一列的详细信息

    
        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   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   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=0
        --where   d.name='orders'         --如果只查询指定表,加上此条件
        order   by   a.id,a.colorder

  请尊重知识，请尊重原创 更多资料参考请见  http://www.cezuwang.com/listFilm?page=1&areaId=906&filmTypeId=1
引自 http://blog.itpub.net/16436858/viewspace-624807