【IT168 服务器学院】SELECT  表名=case when a.colorder=1 then d.name 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.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 sysproperties g on a.id=g.id
　　   and a.colid=g.smallid 
　　   order by a.id,a.colorder