Mysql：如何查询所有用户每天创建的记录？

Question

我的表格包含以下数据：

SELECT * FROM ibiza_production.line_write_revenues order by created_at desc limit 50;

如您所见，上表中包含user_id和created_at列。我想查询数据，如下所示。

我使用了以下查询，但它只能在任何日期为1位用户提供数据。

SELECT count(*) AS 'Requests',
DATE(created_at) AS 'Date',user_id
FROM ibiza_production.line_write_revenues where user_id is not null
GROUP BY DATE(created_at);

如您所见，它一次只显示一个用户的数据。 请帮忙。

Answer 1

在group by子句中包含user_id以获取每个日期和每个用户的数据

SELECT count(*) AS 'Requests',
DATE(created_at) AS 'Date',
user_id
FROM ibiza_production.line_write_revenues where user_id is not null
GROUP BY DATE(created_at),user_id;

Answer 2

SELECT count(*) AS 'Requests',
DATE(created_at) AS 'Date',user_id
FROM ibiza_production.line_write_revenues where user_id is not null
GROUP BY DATE(created_at), user_id;

Answer 3

尝试使用concat进行分组

SELECT `date`,`user_id`,COUNT(*) FROM ibiza_production.line_write_revenues GROUP BY CONCAT(`date`,'-',`user_id`) ORDER BY `date`,`user_id` LIMIT 50

Answer 4

嗨，你可以尝试这个，让我知道它是否对你有所帮助。

SELECT count(*) AS 'Requests',
DATE(created_at) AS 'Date',user_id
FROM ibiza_production.line_write_revenues where user_id is not null
GROUP BY DATE(created_at),user_id order by DATE(created_at);