I have to write a query which will display the top 25 game_id which are under specific genre. Database table is like
| id | genre_id | game_id | is_primary |
----------------------------------------
1 6000 12345 0
2 6007 12345 1
3 6000 23492 0
4 6007 82837 1
----------------------------------------
Here you can see that record 1 and 2 have same game_id for both is_primary = 0 and 1. What i have to do is to execute a query having both the genre_id with me and i have to fetch the game_id which falls under both. Means game_id which have 6000 as genre_id and is_primary=0 and 6007 as genre_id with is_primary=1.
Searched on net but no success.
I tried this query
SELECT game_id FROM table_name WHERE
(SELECT game_id FROM table_name WHERE genre_id=6000 AND is_primary=0)
AND ganre_id=6007 AND is_primary=1;
But this query is giving error as Subquery returns more than one value
.
Try this query (UPDATED)
SELECT game_id FROM table_name WHERE game_id IN(SELECT game_id FROM table_name WHERE genre_id=6000 AND is_primary=0)
AND ( ganre_id=6007 AND is_primary=1);
JOIN
performs much better than subqueries :
SELECT t1.game_id
FROM table_name t1
JOIN table_name t2 ON (t1.game_id = t2.game_id AND t2.genre_id = 6000 AND t2.is_primary = 0)
WHERE (t1.genre_id = 6007 AND t1.is_primary = 1)
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