coding绝了都

由于5.7以上版本默认的 MySQL 配置中 sql_mode 配置了 only_full_group...

MySQL数据库中如何查询分组后每组中的最后一条记录方法一select * from messages whereid in ( select max(id) fom messages group by name);-- 优化select b.* from (select max(`id`) as id from `messages` group by `name`) as ajoin `messages` as b on a.id = b.id;方法二sel

执行下面sql语句,将结果集复制出来，然后批量执行就完事了SELECT CONCAT(“truncate table “,a.table_name,”;”) FROM(select table_name from information_schema.tables where table_schema=‘数据库名称’) as a WHERE a.table_name LIKE “aa%”...