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博客园 - litsword

[转]IDENT_CURRENT、SCOPE_IDENTITY、@@IDENTITY 差異對照表 [转贴]TFS Power Tools–September 2010 Release SQL 中使用正则表达式过滤字母或数字 [转载]记不住ASP.NET页面生命周期的苦恼 Split Full Name as First and Last HTML 合并单元格示例 动态加载配置文件 [转载]实现PadLeft的SQL脚本 Useful SQL script SQL游标遍历时的变量赋值 SQL Date Time format SCOPE_IDENTITY、IDENT_CURRENT 和 @@IDENTITY 的区别 Union合并数组(去掉重复的项目) Winform 版本信息 Sql语句 生日提醒 事件的定义 【原创】RSS开发心得小结 SQL数据类型nchar,char,varchar与nvarchar区别 JavaScript里面三个等号和两个等号的区别
在Update 和 Delete语句中使用 Inner Join
litsword · 2011-10-14 · via 博客园 - litsword

update的格式是:

update table1

set table1.name=’abc’

from table1 

inner join table2

on table1.id = table2.id

where table2.number = '123'

delete 的格式是:

delete from table1

from table1

inner join table2

on table1.id = table2.id

注意蓝色部分,这样就可以省掉复杂的中间表了^_^

posted @ 2011-10-14 09:06  litsword  阅读(2454)  评论(0)    收藏  举报

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