MySQL在线模拟平台

https://blog.csdn.net/weibo1230123/article/details/90344535

 

     1. http://sample.jimstone.com.cn/xsql/

2. http://sqlfiddle.com/ 

3. https://sqlbolt.com/lesson/select_queries_introduction

4. https://www.w3resource.com/sql-exercises/sql-retrieve-from-table.php

在线的mysql练习 - 在线SQL 廖雪峰的

https://www.liaoxuefeng.com/wiki/1177760294764384/1217864791925600

sql语句练习50题(Mysql版)  https://blog.csdn.net/fashion2014/article/details/78826299/

https://www.sojson.com/tag_mysql.html