分享SQL2005 查询表结构的SQL语句

 1 SELECT    
 2 (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 
 3      a.colorder as 字段序号,   
 4      a.name as 字段名,   
 5      (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
 6      (case when (SELECT count(*) FROM sysobjects--查询主键   
 7                      WHERE (name in    
 8                              (SELECT name FROM sysindexes    
 9                              WHERE (id = a.id)   AND (indid in    
10                                      (SELECT indid FROM sysindexkeys   
11                                        WHERE (id = a.id) AND (colid in    
12                                          (SELECT colid FROM syscolumns   
13                                          WHERE (id = a.id) AND (name = a.name))   
14                          )))))    
15          AND (xtype = 'PK' ))>0 then '√' else '' end) as 主键,--查询主键END   
16 b.name as 类型,   --systypes b 
17 a.length as 占用字节数,   
18 COLUMNPROPERTY(a.id,a.name,'PRECISION' ) as    长度,   
19 isnull(COLUMNPROPERTY(a.id,a.name,'Scale' ),0) as 小数位数,   
20 (case when a.isnullable=1 then '√' else '' end) as 允许空,   
21 isnull(e.text,'' ) as 默认值,   --syscomments e 
22 isnull(g.[value],'' ) AS 字段说明    --sys.extended_properties g (字段信息表)
23 FROM syscolumns a left join systypes b    
24 on a.xtype=b.xusertype   
25 inner join sysobjects d    
26 on a.id=d.id and d.xtype='U' and d.name<> 'dtproperties'    
27 left join syscomments e   
28 on a.cdefault=e.id   
29 left join sys.extended_properties g   
30 on a.id=g.major_id AND a.colid = g.minor_id    
31      where d.name='systempara' --所要查询的表   
32 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