摘要:
删除的几种方法: (1)通过建立临时表来实现 SQL>create table temp_emp as (select distinct * from employee) SQL> truncate table employee; (清空employee表的数据) SQL> insert into employee select * from temp_emp; (再将临时... 阅读全文
posted @ 2009-10-28 16:35
Zoya Qiu
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