如何对 MySQL 中具有多个 HAVING 值的多列进行 GROUP BY？

Question

我正在尝试创建一个 mysql 查询来查看存储搜索查询的 table。查询试图获取所有行：

>= 日期
仅 returning 搜索查询出现 3 次或更多次的行
也只有 returning 行，其中 2 个或更多用户使用了搜索查询

此查询无效，但应概述我要执行的操作：

SELECT 
  * 
FROM 
  `analytics` 
WHERE 
  `date` >= '2021-01-01' 
GROUP BY 
  `query` 
HAVING 
  COUNT(*) >= 3 
  AND 
GROUP BY 
  `user` 
HAVING 
  COUNT(*) >= 2 
ORDER BY 
  id DESC;

示例数据

id	user	query	date
1	5	What is a dog	2021-01-01
2	5	What is a dog	2021-01-01
3	6	What is a dog	2021-01-01
4	7	What is a dog	2021-01-01
5	7	What is a brog	2021-01-01

例子SQL

SELECT 
  * 
FROM 
  analytics 
WHERE 
  date >= '2021-01-01' 
GROUP BY 
  query 
HAVING 
  COUNT(*) >= 3 
  AND 
GROUP BY 
  user 
HAVING 
  COUNT(*) >= 2 
ORDER BY 
  id DESC;

使用上面查询中设置的值，单行应该 return 查询“What is a dog”，所有其他列并不重要。

我知道您可以用逗号分隔 GROUP BY 的列，但我似乎无法弄清楚如何为每一列设置不同的值。

Answer 1

您可以在同一个 HAVING 子句中设置两个条件：

SELECT `query` 
FROM `analytics` 
WHERE `date` >= '2021-01-01' 
GROUP BY `query`
HAVING COUNT(*) >= 3 AND COUNT(DISTINCT `user`) >= 2;

如何对 MySQL 中具有多个 HAVING 值的多列进行 GROUP BY？

How to GROUP BY multiple columns with multiple HAVING values in MySQL?

mysql

group-by

count

having