转自:http://www.maomao365.com/?p=6973 

摘要:
在sql脚本编写中，如果需要在update delete 中使用表别名的方法，必须按照一定的规则编写，否则将会出现相应的异常信息，如下所示:
实验环境:sqlserver 2008 R2

---update 表别名的写法update [别名] set [别名].[字段] =[字段值] from [表名] as [表别名] where [条件]---delete 表别名的写法delete [别名] set [别名].[字段] =[字段值] from [表名] as [表别名] where [条件]