Question

Hi I’m wondering if it is possible to do something like below. Obviously I’ve tried to run this in phpMyAdmin but there is an error. Perhaps there is another way to write this query.

SELECT * FROM eat_eat_restaurants AS r 
INNER JOIN eat_eat_cuisines AS c ON c.cuisine_id IN (r.cuisine_ids)

Further to this is it possible to select the restaurant name and cuisines in one row? e.g.

r_name    c_names
Marco's   Italian, Modern European

My 2 tables look like so:

TABLE EAT_EAT_RESTAURANTS
id  r_name    cuisine_ids
1   Marco's   1,2
2   Beldaro   3,4
3   Benny's   1,3


TABLE EAT_EAT_CUISINES
id  c_name
1   Italian
2   Modern European
3   Greek
4   Belgian
5   ...

Answer 1

Your current schema is not normalized and very inefficient. Try 3 tables: restaurants, cuisines and restaurant_cuisines and do the query like this:

SELECT r.r_name, GROUP_CONCAT(c.c_name)
FROM restaurants r JOIN restaurant_cuisines rc ON (r.id=rc.r_id)
 JOIN cuisines c ON (rc.c_id=c.id)
GROUP BY r.r_name;