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.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

　　left join sysproperties f on d.id=f.id and f.smallid=0

　　--where d.name='要查询的表' --如果只查询指定表,加上此条件

　　order by a.id,a.colorder