Question

This will be a simple one for MySQL specialists.

I have one table with songs (songs):

id, song_name

And another one with tags (tags):

id, tag_name

And i have a crosslink table (tagXsong):

id, song_id, tag_id

I need a single query that returns all songs (from the songs table) which match ALL tags within a list of tags (provided as a joined list of IDs such as (57,58,60,63).

So in other words, i want to retrieve songs that have all of the tags in my list of tag ids.

What a shame asking for this!

Answer 1

SELECT s.id,s.song_name FROM song s, tagXsong x 
  WHERE s.id=x.song_id AND x.tag_id IN (57,58,60,63) 
  GROUP BY 1,2 HAVING COUNT(*)=4

This will give you all songs that have the four (57,58,60,63) tag_id’s linked to them.