mysql - 使用 MySQL 查询的结果作为下一个的 WHERE 子句

Question

我想使用以下 MySql 查询作为主查询中 WHERE 子句的输入，但我找不到正确的方法来执行此操作。我可以使用任何网站或示例来学习如何执行此操作吗？

代码如下:

主要查询:

SELECT *, IF(SubQuery is true, 'Yes', 'No') AS Watched Distribution
FROM account
WHERE Watched Distribution LIKE 'Yes'

子查询:

SELECT account_id, IF(w.main_title RLIKE 'place holder for film 
titels|nextfilm|nextfilm', 'Distribution', 'Non-distribution') AS Distribution
FROM watched w
WHERE Distribution LIKE 'Distribution'

Answer 1

尝试使用 JOIN 运算符和 where 子句，如下所示:

SELECT a.*, 'Yes'
FROM account a
JOIN watched w on w.account_id = a.account_id
where 'Distribution' in (IF(w.main_title RLIKE 'place holder for film 
titels|nextfilm|nextfilm', 'Distribution', 'Non-distribution'))

参见下面的示例:

https://www.sitepoint.com/community/t/mysql-question-how-to-us-an-as-field-in-the-where-clause/1188/5