接下来将MySQL查询的结果用作WHERE子句

Question

I would like to use the following MySql query as an input for the WHERE clause in the main query, but I cannot find the correct way to do this. Is there any site or example I can use in order to learn how to do this?

Code is as follows:

MAIN Query:

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

SubQuery:

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

Try to use JOIN operator and where clause like this:

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'))

See example below:

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