清空数据库sql

1、清空test库中表数据：

select concat('truncate table ',table_schema,'.',table_name,';') as '执行sql' from information_schema.TABLES where table_schema='test';

2、删除test库中所有表：

select concat('drop table ',table_schema,'.',table_name,';') as '执行sql' from information_schema.TABLES where table_schema='test';

执行相关sql即可。