//需要设置表名SELECT d.name 表名,h.value 表说明,a.colorder 字段序号,a.name 字段名,(case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end) 标识, (case when (SELECT count(*) FROM sysobjects  WHERE (name in (SELECT name FROM sysindexes  WHERE (id = a.id) AND (indid in  (SELECT indid FROM sysindexkeys  WHERE (id = a.id) AND (colid in  (SELECT colid FROM syscolumns WHERE (id = a.id) AND (name = a.name)))))))  AND (xtype = 'PK'))>0 then '√' else '' end) 主键,b.name 类型,a.length 占用字节数,  COLUMNPROPERTY(a.id,a.name,'PRECISION') as 长度,  isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0) as 小数位数,(case when a.isnullable=1 then '√'else '' end) 允许空,  isnull(e.text,'') 默认值,isnull(g.[value], ' ') AS [说明]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_idleft join sys.extended_properties f on d.id=f.class and f.minor_id=0left join sys.extended_properties h on d.id = h.major_id and h.minor_id = 0where b.name is not nullorder by a.id,a.colorder//不需要设置表名Select o.Name As ObjectsName , c.name As ColumnsName , t.name As ColumnsType , c.length As ColumnsLengthFrom SysObjects As o , SysColumns As c , SysTypes As tWhere o.type in ('u','v') And o.id = c.id And c.xtype = t.xtypeOrder By o.name , c.name , t.name , c.Length