分享SQL2005 查询表结构的SQL语句

SELECT    
(case when a.colorder=1 then d.name else '' end) as 表名,--如果表名相同就返回空   syscolumns(表字段信息表) a  sysobjects d 
     a.colorder as 字段序号,   
     a.name as 字段名,   
     (case when COLUMNPROPERTY( a.id,a.name, 'IsIdentity' )=1 then '√' else '' end) as 标识,   --返回IsIdentity的值，IsIdentity只有两个值：0、1
     (case when (SELECT count(*) FROM sysobjects--查询主键   
                     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) as 主键,--查询主键END   
b.name as 类型,   --systypes b 
a.length as 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) as 允许空,   
isnull(e.text,'' ) as 默认值,   --syscomments e 
isnull(g.[value],'' ) AS 字段说明    --sys.extended_properties g (字段信息表)
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    
     where d.name='systempara' --所要查询的表   
order by a.id,a.colorder   

• select * from sys.extended_properties--字段信息表
• select * from syscolumns--表字段信息表
• select * from sysobjects where sysobjects.type='u'--数据库所有的用户创建的表的信息
• select * from sysobjects where sysobjects.type='s'--数据库所有的系统表的信息
• select * from syscomments --所有的触发器的东西
• --COLUMNPROPERTY 返回有关列或过程参数的信息