Find duplicates in the same table in MySQL

Question

I have a table with two columns - artist, release_id

What query can I run to show duplicate records?

e.g. my table is

ArtistX : 45677
ArtistY         


        

Answer 1

Try this:

SELECT A.ARTIST,A.RELEASE_ID FROM ARTISTS A
WHERE EXISTS(
SELECT 'X' FROM ARTISTS B
WHERE B.ARTIST = A.ARTIST AND B.RELEASE_ID = A.RELEASE_ID
GROUP BY B.ARTIST,B.RELEASE_ID
HAVING COUNT(B.ARTIST)>1)
ORDER BY A.ARTIST;