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mysql表之间数据转移
mysql数据结构
java代码 //把user表中相关字段的记录并入到useradditionalinfo表中 insert tbl_user_additional_info (user_id,country,address,postal_code,phone,edu_background) select user_id,country,address,postal_code,phone,edu_background from tbl_user where user_id not in(select user_id from tbl_user_additional_info); //更改user表的结构 alter table tbl_user drop user_id, drop country, drop address, drop postal_code, drop phone, drop edu_background; ##############################
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