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,
  字段中文名称 = isnull(g.[value],''),
  字段英文名称 = a.name,
  类型 = b.name,
  长度 = COLUMNPROPERTY(a.id,a.name,'PRECISION'),
  --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 '1' else '0' end,
  允许空=case when a.isnullable=1 then '1'else '0' end
  FROM syscolumns a 
  left join systypes b on a.xtype=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 
  order by a.id,a.colorder,d.name