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Title: GitHub - volagold/sql-nowcoder: 牛客网SQL刷题笔记 | Solutions for SQL problems on nowcoder.com

Open Graph Title: GitHub - volagold/sql-nowcoder: 牛客网SQL刷题笔记 | Solutions for SQL problems on nowcoder.com

X Title: GitHub - volagold/sql-nowcoder: 牛客网SQL刷题笔记 | Solutions for SQL problems on nowcoder.com

Description: 牛客网SQL刷题笔记 | Solutions for SQL problems on nowcoder.com - volagold/sql-nowcoder

Open Graph Description: 牛客网SQL刷题笔记 | Solutions for SQL problems on nowcoder.com - volagold/sql-nowcoder

X Description: 牛客网SQL刷题笔记 | Solutions for SQL problems on nowcoder.com - volagold/sql-nowcoder

Opengraph URL: https://github.com/volagold/sql-nowcoder

X: @github

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SQL35-某乎问答11月份日人均回答量.mdhttps://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL35-%E6%9F%90%E4%B9%8E%E9%97%AE%E7%AD%9411%E6%9C%88%E4%BB%BD%E6%97%A5%E4%BA%BA%E5%9D%87%E5%9B%9E%E7%AD%94%E9%87%8F.md
SQL35-某乎问答11月份日人均回答量.mdhttps://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL35-%E6%9F%90%E4%B9%8E%E9%97%AE%E7%AD%9411%E6%9C%88%E4%BB%BD%E6%97%A5%E4%BA%BA%E5%9D%87%E5%9B%9E%E7%AD%94%E9%87%8F.md
SQL35-浙大不同难度题目的正确率.mdhttps://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL35-%E6%B5%99%E5%A4%A7%E4%B8%8D%E5%90%8C%E9%9A%BE%E5%BA%A6%E9%A2%98%E7%9B%AE%E7%9A%84%E6%AD%A3%E7%A1%AE%E7%8E%87.md
SQL35-浙大不同难度题目的正确率.mdhttps://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL35-%E6%B5%99%E5%A4%A7%E4%B8%8D%E5%90%8C%E9%9A%BE%E5%BA%A6%E9%A2%98%E7%9B%AE%E7%9A%84%E6%AD%A3%E7%A1%AE%E7%8E%87.md
SQL36-某乎问答高质量的回答中用户属于各级别的数量.mdhttps://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL36-%E6%9F%90%E4%B9%8E%E9%97%AE%E7%AD%94%E9%AB%98%E8%B4%A8%E9%87%8F%E7%9A%84%E5%9B%9E%E7%AD%94%E4%B8%AD%E7%94%A8%E6%88%B7%E5%B1%9E%E4%BA%8E%E5%90%84%E7%BA%A7%E5%88%AB%E7%9A%84%E6%95%B0%E9%87%8F.md
SQL36-某乎问答高质量的回答中用户属于各级别的数量.mdhttps://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL36-%E6%9F%90%E4%B9%8E%E9%97%AE%E7%AD%94%E9%AB%98%E8%B4%A8%E9%87%8F%E7%9A%84%E5%9B%9E%E7%AD%94%E4%B8%AD%E7%94%A8%E6%88%B7%E5%B1%9E%E4%BA%8E%E5%90%84%E7%BA%A7%E5%88%AB%E7%9A%84%E6%95%B0%E9%87%8F.md
SQL37-某乎问答单日回答问题数大于等于3个的所有用户.mdhttps://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL37-%E6%9F%90%E4%B9%8E%E9%97%AE%E7%AD%94%E5%8D%95%E6%97%A5%E5%9B%9E%E7%AD%94%E9%97%AE%E9%A2%98%E6%95%B0%E5%A4%A7%E4%BA%8E%E7%AD%89%E4%BA%8E3%E4%B8%AA%E7%9A%84%E6%89%80%E6%9C%89%E7%94%A8%E6%88%B7.md
SQL37-某乎问答单日回答问题数大于等于3个的所有用户.mdhttps://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL37-%E6%9F%90%E4%B9%8E%E9%97%AE%E7%AD%94%E5%8D%95%E6%97%A5%E5%9B%9E%E7%AD%94%E9%97%AE%E9%A2%98%E6%95%B0%E5%A4%A7%E4%BA%8E%E7%AD%89%E4%BA%8E3%E4%B8%AA%E7%9A%84%E6%89%80%E6%9C%89%E7%94%A8%E6%88%B7.md
SQL38-某乎问答回答过教育类问题的用户里有多少用户回答过职场问题.mdhttps://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL38-%E6%9F%90%E4%B9%8E%E9%97%AE%E7%AD%94%E5%9B%9E%E7%AD%94%E8%BF%87%E6%95%99%E8%82%B2%E7%B1%BB%E9%97%AE%E9%A2%98%E7%9A%84%E7%94%A8%E6%88%B7%E9%87%8C%E6%9C%89%E5%A4%9A%E5%B0%91%E7%94%A8%E6%88%B7%E5%9B%9E%E7%AD%94%E8%BF%87%E8%81%8C%E5%9C%BA%E9%97%AE%E9%A2%98.md
SQL38-某乎问答回答过教育类问题的用户里有多少用户回答过职场问题.mdhttps://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL38-%E6%9F%90%E4%B9%8E%E9%97%AE%E7%AD%94%E5%9B%9E%E7%AD%94%E8%BF%87%E6%95%99%E8%82%B2%E7%B1%BB%E9%97%AE%E9%A2%98%E7%9A%84%E7%94%A8%E6%88%B7%E9%87%8C%E6%9C%89%E5%A4%9A%E5%B0%91%E7%94%A8%E6%88%B7%E5%9B%9E%E7%AD%94%E8%BF%87%E8%81%8C%E5%9C%BA%E9%97%AE%E9%A2%98.md
SQL39-某乎问答最大连续回答问题天数大于等于3天的用户及其等级.mdhttps://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL39-%E6%9F%90%E4%B9%8E%E9%97%AE%E7%AD%94%E6%9C%80%E5%A4%A7%E8%BF%9E%E7%BB%AD%E5%9B%9E%E7%AD%94%E9%97%AE%E9%A2%98%E5%A4%A9%E6%95%B0%E5%A4%A7%E4%BA%8E%E7%AD%89%E4%BA%8E3%E5%A4%A9%E7%9A%84%E7%94%A8%E6%88%B7%E5%8F%8A%E5%85%B6%E7%AD%89%E7%BA%A7.md
SQL39-某乎问答最大连续回答问题天数大于等于3天的用户及其等级.mdhttps://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL39-%E6%9F%90%E4%B9%8E%E9%97%AE%E7%AD%94%E6%9C%80%E5%A4%A7%E8%BF%9E%E7%BB%AD%E5%9B%9E%E7%AD%94%E9%97%AE%E9%A2%98%E5%A4%A9%E6%95%B0%E5%A4%A7%E4%BA%8E%E7%AD%89%E4%BA%8E3%E5%A4%A9%E7%9A%84%E7%94%A8%E6%88%B7%E5%8F%8A%E5%85%B6%E7%AD%89%E7%BA%A7.md
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SQL22 统计每个学校的答过题的用户的平均答题数https://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL22-%E7%BB%9F%E8%AE%A1%E6%AF%8F%E4%B8%AA%E5%AD%A6%E6%A0%A1%E7%9A%84%E7%AD%94%E8%BF%87%E9%A2%98%E7%9A%84%E7%94%A8%E6%88%B7%E7%9A%84%E5%B9%B3%E5%9D%87%E7%AD%94%E9%A2%98%E6%95%B0.md
SQL23 统计每个学校各难度的用户平均刷题数https://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL23-%E7%BB%9F%E8%AE%A1%E6%AF%8F%E4%B8%AA%E5%AD%A6%E6%A0%A1%E5%90%84%E9%9A%BE%E5%BA%A6%E7%9A%84%E7%94%A8%E6%88%B7%E5%B9%B3%E5%9D%87%E5%88%B7%E9%A2%98%E6%95%B0.md
SQL26 计算25岁以上和以下的用户数量https://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL26-%E8%AE%A1%E7%AE%9725%E5%B2%81%E4%BB%A5%E4%B8%8A%E5%92%8C%E4%BB%A5%E4%B8%8B%E7%9A%84%E7%94%A8%E6%88%B7%E6%95%B0%E9%87%8F.md
SQL28 计算用户8月每天的练题数量https://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL28-%E8%AE%A1%E7%AE%97%E7%94%A8%E6%88%B78%E6%9C%88%E6%AF%8F%E5%A4%A9%E7%9A%84%E7%BB%83%E9%A2%98%E6%95%B0%E9%87%8F.md
SQL29 计算用户的平均次日留存率https://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL29-%E8%AE%A1%E7%AE%97%E7%94%A8%E6%88%B7%E7%9A%84%E5%B9%B3%E5%9D%87%E6%AC%A1%E6%97%A5%E7%95%99%E5%AD%98%E7%8E%87.md
SQL33 找出每个学校GPA最低的同学https://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL33-%E6%89%BE%E5%87%BA%E6%AF%8F%E4%B8%AA%E5%AD%A6%E6%A0%A1GPA%E6%9C%80%E4%BD%8E%E7%9A%84%E5%90%8C%E5%AD%A6.md
SQL34 统计复旦用户8月练题情况https://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL34-%E7%BB%9F%E8%AE%A1%E5%A4%8D%E6%97%A6%E7%94%A8%E6%88%B78%E6%9C%88%E7%BB%83%E9%A2%98%E6%83%85%E5%86%B5.md
SQL35 浙大不同难度题目的正确率https://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL35-%E6%B5%99%E5%A4%A7%E4%B8%8D%E5%90%8C%E9%9A%BE%E5%BA%A6%E9%A2%98%E7%9B%AE%E7%9A%84%E6%AD%A3%E7%A1%AE%E7%8E%87.md
https://patch-diff.githubusercontent.com/volagold/sql-nowcoder#电商场景某东商城
SQL13 计算商城中2021年每月的GMVhttps://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL13-%E8%AE%A1%E7%AE%97%E5%95%86%E5%9F%8E%E4%B8%AD2021%E5%B9%B4%E6%AF%8F%E6%9C%88%E7%9A%84GMV.md
SQL14 统计2021年10月每个退货率不大于0.5的商品各项指标https://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL14-%E7%BB%9F%E8%AE%A12021%E5%B9%B410%E6%9C%88%E6%AF%8F%E4%B8%AA%E9%80%80%E8%B4%A7%E7%8E%87%E4%B8%8D%E5%A4%A7%E4%BA%8E0.5%E7%9A%84%E5%95%86%E5%93%81%E5%90%84%E9%A1%B9%E6%8C%87%E6%A0%87.md
SQL15 某店铺的各商品毛利率及店铺整体毛利率https://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL15-%E6%9F%90%E5%BA%97%E9%93%BA%E7%9A%84%E5%90%84%E5%95%86%E5%93%81%E6%AF%9B%E5%88%A9%E7%8E%87%E5%8F%8A%E5%BA%97%E9%93%BA%E6%95%B4%E4%BD%93%E6%AF%9B%E5%88%A9%E7%8E%87.md
https://patch-diff.githubusercontent.com/volagold/sql-nowcoder#出行场景某滴打车
SQL20 有取消订单记录的司机平均评分https://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL20-%E6%9C%89%E5%8F%96%E6%B6%88%E8%AE%A2%E5%8D%95%E8%AE%B0%E5%BD%95%E7%9A%84%E5%8F%B8%E6%9C%BA%E5%B9%B3%E5%9D%87%E8%AF%84%E5%88%86.md
SQL21 每个城市中评分最高的司机信息https://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL21-%E6%AF%8F%E4%B8%AA%E5%9F%8E%E5%B8%82%E4%B8%AD%E8%AF%84%E5%88%86%E6%9C%80%E9%AB%98%E7%9A%84%E5%8F%B8%E6%9C%BA%E4%BF%A1%E6%81%AF.md
https://patch-diff.githubusercontent.com/volagold/sql-nowcoder#内容行业某乎问答
SQL35 某乎问答11月份日人均回答量https://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL35-%E6%9F%90%E4%B9%8E%E9%97%AE%E7%AD%9411%E6%9C%88%E4%BB%BD%E6%97%A5%E4%BA%BA%E5%9D%87%E5%9B%9E%E7%AD%94%E9%87%8F.md
SQL36 某乎问答高质量的回答中用户属于各级别的数量https://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL36-%E6%9F%90%E4%B9%8E%E9%97%AE%E7%AD%94%E9%AB%98%E8%B4%A8%E9%87%8F%E7%9A%84%E5%9B%9E%E7%AD%94%E4%B8%AD%E7%94%A8%E6%88%B7%E5%B1%9E%E4%BA%8E%E5%90%84%E7%BA%A7%E5%88%AB%E7%9A%84%E6%95%B0%E9%87%8F.md
SQL37 某乎问答单日回答问题数大于等于3个的所有用户https://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL37-%E6%9F%90%E4%B9%8E%E9%97%AE%E7%AD%94%E5%8D%95%E6%97%A5%E5%9B%9E%E7%AD%94%E9%97%AE%E9%A2%98%E6%95%B0%E5%A4%A7%E4%BA%8E%E7%AD%89%E4%BA%8E3%E4%B8%AA%E7%9A%84%E6%89%80%E6%9C%89%E7%94%A8%E6%88%B7.md
SQL38 某乎问答回答过教育类问题的用户里有多少用户回答过职场问题https://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL38-%E6%9F%90%E4%B9%8E%E9%97%AE%E7%AD%94%E5%9B%9E%E7%AD%94%E8%BF%87%E6%95%99%E8%82%B2%E7%B1%BB%E9%97%AE%E9%A2%98%E7%9A%84%E7%94%A8%E6%88%B7%E9%87%8C%E6%9C%89%E5%A4%9A%E5%B0%91%E7%94%A8%E6%88%B7%E5%9B%9E%E7%AD%94%E8%BF%87%E8%81%8C%E5%9C%BA%E9%97%AE%E9%A2%98.md
SQL39 某乎问答最大连续回答问题天数大于等于3天的用户及其等级https://patch-diff.githubusercontent.com/volagold/sql-nowcoder/blob/master/SQL39-%E6%9F%90%E4%B9%8E%E9%97%AE%E7%AD%94%E6%9C%80%E5%A4%A7%E8%BF%9E%E7%BB%AD%E5%9B%9E%E7%AD%94%E9%97%AE%E9%A2%98%E5%A4%A9%E6%95%B0%E5%A4%A7%E4%BA%8E%E7%AD%89%E4%BA%8E3%E5%A4%A9%E7%9A%84%E7%94%A8%E6%88%B7%E5%8F%8A%E5%85%B6%E7%AD%89%E7%BA%A7.md
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