MySQL WHERE <multiple-column> IN <subquery>
in-subquery, multiple-tables, mysql, where-clause
Solution
I Read you are not agree with `JOIN`, but just another way to do it.. See `join` with `friends` if it is useful to you..
SELECT `timeline`.`action`, `timeline`.`data`, `timeline`.`tlupdate`,
u1.`id` AS ufrom_id, u1.`username` AS ufrom_username, u1.`firstname` AS ufrom_firstname, u1.`lastname` AS ufrom_lastname, u1.`picture` AS ufrom_picture,
u2.`id` AS uto_id, u2.`username` AS uto_username, u2.`firstname` AS uto_firstname, u2.`lastname` AS uto_lastname, u2.`picture` AS uto_picture,
m.`id` AS m_id, m.`name` AS m_name, m.`alternative_name` AS m_altname, m.`tiny_img` AS m_tiny, m.`normal_img` AS m_normal
FROM `timeline`
JOIN `users` u1 ON u1.`id` = `timeline`.`user_id_from`
JOIN `users` u2 ON u2.`id` = `timeline`.`user_id_to`
JOIN `friends` f on f.`idol_id`=u1.`id` or f.`idol_id`=u2.`id`
JOIN `movies` m ON m.`id` = `timeline`.`movie_id`;
Update:
As you are using `inner join` You can this too to avoid the condition on complete resultSet.
JOIN `friends` f on ((f.`idol_id`=u1.`id` or f.`idol_id`=u2.`id`) and f.idol_id = ?)
Either you can use `DISTINCT` or use `GROUP BY` to get unique result.
Problem
Is there a way (without JOIN) to use the `WHERE` clause on 2 columns (OR) `IN` a subquery? Currently, I'm doing ``` WHERE 'col1' IN ( SELECT id FROM table ) OR 'col2' IN ( SELECT id FROM table ) ``` And I'm sure I can do better :) . i've also tried `WHERE ('col1', 'col2') IN <subquery>` but MySQL says: `Operand should contain 2 column(s)` Thanks for your help. Edit: By "No join", I mean I'm alreeady making many joins: http://pastebin.com/bRfD21W9, and as you can see, the subqueries are on another table.