mysql 临时表和内存表创建 查询 删除以及注意事项
mysql 临时表和内存表创建 查询 删除以及注意事项临时表和内存表的ENGINE 不同，临时表默认的是MyISAM,而内存表是MEMORY ,临时表只对当前会话可见，连接断开时，自动删除！
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