UNION two tables in a subquery

问题

I am trying to UNION two tables in a subquery, but apparently this is not allowed? A simplified version of my query is:

SELECT *
FROM user, organization
WHERE user.id NOT IN (
    (SELECT distinct user_id FROM web_request)
    UNION
    (SELECT distinct user_id from user_milestone)
)
AND user.organization_id = organization.id

My question is this: What is the best way to get around this shortcoming of MySQL?

回答1:

SELECT u.*, o.*
FROM `user` u
INNER JOIN organization o
ON u.organization_id = o.id
WHERE u.id NOT IN(
    SELECT distinct user_id FROM web_request
    UNION
    SELECT distinct user_id from user_milestone
)

回答2:

Try this

SELECT *
FROM   USER u
JOIN   organization o
ON     u.organization_id = o.id
WHERE  u.uid NOT IN SELECT  * (
       (
            SELECT DISTINCT user_id
            FROM            web_request )
union
      (
            SELECT DISTINCT user_id
            FROM            user_milestone) ) AS t

来源：https://stackoverflow.com/questions/37598964/union-two-tables-in-a-subquery