SqlServer常用SQL列表

1、删除所有用户表

　　a：当表之间有外键约束时，会执行失败

1 sp_msforeachtable @command1='drop table ?'
View Code

　　b：先删除约束，再删除表

 1 --/第1步**********删除所有表的外键约束*************************/
 2  
 3 DECLARE c1 cursor for
 4 select 'alter table ['+ object_name(parent_obj) + '] drop constraint ['+name+']; '
 5 from sysobjects
 6 where xtype = 'F'
 7 open c1
 8 declare @c1 varchar(8000)
 9 fetch next from c1 into @c1
10 while(@@fetch_status=0)
11 begin
12 exec(@c1)
13 fetch next from c1 into @c1
14 end
15 close c1
16 deallocate c1
17  
18 --/第2步**********删除所有表*************************/
19  
20 GO
21 declare @sql varchar(max)
22 while (select count(*) from sysobjects where type='U')>0
23 begin
24 SELECT @sql='drop table ' + name
25 FROM sysobjects
26 WHERE (type = 'U')
27 ORDER BY 'drop table ' + name
28 exec(@sql)
29 end
View Code

 

posted @ 2018-03-12 20:07  網韻  阅读(787)  评论(0)    收藏  举报