查询MSSQL数据库表的列备注

SELECT
库名=       case   when   a.colorder=1   then   h.table_catalog   else   ''   end,
模式=       case   when   a.colorder=1   then   h.table_schema   else   ''   end,
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
left   join   information_schema.tables h  on   d.name = h.table_name
where   d.name='waybill'         --如果只查询指定表,加上此条件
order   by   a.id,a.colorder