1.删除外键约束 DECLARE c1 cursor for select 'alter table ['+ object_name(parent_obj) + '] drop constraint ['+name+']; ' from sysobjects where xtype = 'F' open c1 ) fetch next from c1 into @c1 ) begin exec(@c1) fetch next from c1 into @c1 end close c1 deall…

SQLServer2008/2012 删除所有表视图存储过程 -------------------删除所有的表-------------------use xuwenbin111--/第1步**********删除所有表的外键约束*************************/DECLARE c1 cursor forselect 'alter table ['+ object_name(parent_obj) + '] drop constraint ['+name+']; 'from…

本文介绍了Sql Server数据库中删除数据表中重复记录的方法. ［项目］数据库中users表,包含u_name,u_pwd两个字段,其中u_name存在重复项,现在要实现把重复的项删除!［分析］1.生成一张临时表new_users,表结构与users表一样:2.对users表按id做一个循环,每从users表中读出一个条记录,判断new_users中是否存在有相同的u_name,如果没有,则把它插入新表:如果已经有了相同的项,则忽略此条记录:3.把users表改为其它的名称,把new_use…

如果由于外键约束删除table失败,则先删除所有约束:   --/第1步**********删除所有表的外键约束*************************/   DECLARE c1 cursor for select 'alter table ['+ object_name(parent_obj) + '] drop constraint ['+name+']; ' from sysobjects where xtype = 'F' open c1 declare @c1 varcha…

1.删除所有表 select 'drop table '+name+';' from sys.tables where name like 'DataSyncV1DelaySample%' or name like 'DataSyncV2DelaySample%' 2.递归查询 使用关键字with as with temp ( [Id], [parentid]) as ( select Id, ParentId from SysLocation where ParentId = @ParentI…

如果由于外键约束删除table失败,则先删除所有约束: --/第1步**********删除所有表的外键约束*************************/ DECLARE c1 cursor for select 'alter table ['+ object_name(parent_obj) + '] drop constraint ['+name+']; ' from sysobjects where xtype = 'F' open c1 declare @c1 varchar(80…

如果由于外键约束删除table失败,则先删除所有约束: --/第1步**********删除所有表的外键约束*************************/ DECLARE c1 cursor for select 'alter table ['+ object_name(parent_obj) + '] drop constraint ['+name+']; ' from sysobjects where xtype = 'F' open c1 ) fetch next from c1 i…

ALTER PROC [dbo].[UpdateTableData] ), ), ), ), ) AS BEGIN ) SET @sql ='UPDATE '+@TableName; --获取SqlServer中表结构 SELECT @xtype=syscolumns.xtype FROM syscolumns, systypes WHERE syscolumns.xusertype = systypes.xusertype AND syscolumns.id = object_id(@Tabl…

http://www.cnblogs.com/jys509/p/3589468.html  首先必须要清空所有表的外键 DECLARE c1 cursor for select 'alter table ['+ object_name(parent_obj) + '] drop constraint ['+name+']; ' from sysobjects where xtype = 'F' open c1 declare @c1 varchar() fetch next from c1 in…

#数据库MySQL 6.7 use sakila; #查询表名 show tables; # SELECT TABLE_NAME,TABLE_ROWS FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA='sakila'; select column_name from information_schema.columns where table_schema='sakila' and table_name='actor'; #表结构 字段名, 类…