MySQL搜索多行，具有多个关键字的多个表

Question

I would like to tweak the following mysql query, if possible:

SELECT * FROM artists,tags WHERE tags.tag_title LIKE '$q' AND artists.art_id=tags.art_id

• $q are the keywords entered by users
• artists is the table with the artists basic information
• tags is the table with keywords related to the artists (an artist can add multiple keywords -or phrases- and each keyword is stored in a different row)

With this query tags.tag_title have to match the exact search. For example "alternative rock" will display all artists with the keyword "alternative rock" in the table tags. It's ok.

So, the question is that for the keyword "alternative rock" I would like to display ALSO the artists that have the keywords "alternative" and "rock" in different rows on the table tags but not the artists with the keywords "alternative" and "metal" or artists with the keywords "indie" and "rock".

Does it makes sense?

Answer 1

you look for something like this,

 SELECT * FROM artists
 INNER JOIN tags 
 ON artists.art_id=tags.art_id
 WHERE tags.tag_title LIKE '% $q1 %' OR  tags.tag_title LIKE '% $q2 %'

q1 and q2 are keyword1 and keyword2

Answer 2

显然，这只是一个例子，但我认为您正在追求这样的东西：

SELECT * FROM artisits artist LEFT JOIN tags tag ON tag.artist_id = artist.id WHERE artist.name LIKE '$q' OR tag.name = $q