学习Python无论是走后端开发还是准备进军数据分析，机器学习和数据挖掘，都离不开数据库的知识。而主流的数据库技术里面，SQL占据了半壁江山，可以说是非常重要，必知必会。今天给大家分享了几个在线SQL刷题的网站，详细介绍推荐一下。
SQLZOO （⭐⭐）
https://sqlzoo.net/
上面的网址是一个免费的SQL学习网站——SQLZOO！它支持语言：English • 日本語 • 中文（繁体），不过选择繁体中文后会发现翻译的也一般，还不如直接用谷歌/有道翻译插件，界面如下：
SQLZOO包括了 SQL 学习的教程和参考资料，支持多国语言，每一个语法配套一个教程、一份数据和一个测验，非常适合初学者使用，因为可以一边通过教程学习语法知识，再通过测验巩固。
SQLZOO的教程框架由浅入深，非常推荐给初学者，如果有简体中文的翻译更好了。[1]
推荐指数：⭐⭐
XUESQL（⭐⭐⭐）
http://xuesql.cn/
如果你因为上面介绍的SQLZOO可以因为语言问题而劝退，那就推荐你一下中文的网站吧——XUESQL。他页面的上部分是教程手册，下部分是在线练习。写完SQL直接回车就是提交，如果正确会自动进入下一题。
另外还有一个加分项，它有自己配套的B站视频（同样免费）。
推荐指数：⭐⭐⭐
上面介绍了两个边学习边练习测试的网站，下面再介绍专门刷题的网站吧！
牛客网（⭐⭐）
https://www.nowcoder.com/ta/sql
牛客网采用的是employees数据库，共61道题。
写好sql，进行保存并调试即可。实在想不明白可以看题解，也可以去讨论区参与讨论。
牛客网作为大家一直推荐的SQL刷题网站做的还是很不错的，既可以检查SQL基础语法的掌握，又可以及时反馈结果是否正确。
不过也有一些体验差的地方，部分题目未完全说明要求，看了别人通过的题解才知道还要考虑这一点。还有格式问题有时候也会导致判错，推荐指数：⭐⭐⭐
leetcode（⭐⭐⭐）
https://leetcode-cn.com/problemset/database/
一般大家看到 leetcode 第一印象是刷算法题的，其实 leetcode 上也有关于 SQL 的题目
我们可以在这里在线刷题，，既能让你很直观的看到自己所写的 SQL 的运行速度等，也可以去借鉴别人优化好的 SQL，与自己的对比，将好的用法学会，这样的提升是很快的。[2]
不过很多题目需要开通会员才能在线练习，推荐指数：⭐⭐⭐
小结
用来刷题网站的题目统计大部分为了统计而统计，缺少业务场景。建议大家合理利用上面推荐的网站用来学习，如果想更好的了解业务题目，可以找一些面试题用来练习。
另外，还有一些SQL在线刷题网站，小五没有测试，欢迎大家评论区补充与评价！
https://www.w3resource.com/sql-exercises/
https://sqlbolt.com/
参考文章
《SQL在线刷题神器，强推SQLZOO呀！》: https://www.jianshu.com/p/45879dc4a971
[2]《在线就能用的 SQL 练习平台我给你找好了！》: Python空间
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data-darkmode-original-bgcolor-15870356070738="rgb(255, 255, 255)" data-darkmode-color-15870356070738="rgb(51, 51, 51)" data-darkmode-original-color-15870356070738="rgb(51, 51, 51)" data-darkmode-bgimage-15870356070738="1" data-darkmode-bgcolor-15870356071023="rgb(36, 36, 36)" data-darkmode-original-bgcolor-15870356071023="rgb(255, 255, 255)" data-darkmode-color-15870356071023="rgb(51, 51, 51)" data-darkmode-original-color-15870356071023="rgb(51, 51, 51)" data-darkmode-bgimage-15870356071023="1" data-darkmode-bgcolor-15882384789136="rgb(36, 36, 36)" data-darkmode-original-bgcolor-15882384789136="rgb(255, 255, 255)" data-darkmode-color-15882384789136="rgb(51, 51, 51)" data-darkmode-original-color-15882384789136="rgb(51, 51, 51)" data-darkmode-bgimage-15882384789136="1" data-darkmode-bgcolor-15882396318564="rgb(36, 36, 36)" data-darkmode-original-bgcolor-15882396318564="rgb(255, 255, 255)" data-darkmode-color-15882396318564="rgb(51, 51, 51)" data-darkmode-original-color-15882396318564="rgb(51, 51, 51)" data-darkmode-bgimage-15882396318564="1" data-darkmode-bgcolor-15900529136199="rgb(36, 36, 36)" data-darkmode-original-bgcolor-15900529136199="rgb(255, 255, 255)" data-darkmode-color-15900529136199="rgb(51, 51, 51)" data-darkmode-original-color-15900529136199="rgb(51, 51, 51)" data-darkmode-bgimage-15900529136199="1" style="font-family: 楷体, 楷体_GB2312, SimKai;">点的“在看”，否则就看不到我了555</span></section><p><span style="font-family: -apple-system-font, system-ui, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;text-align: start;color: black;"></span><br /></p></section></section></section></section></section></section>本篇文章来源于: 菜鸟学Python
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