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

you can try something like this

select artist, count(*) from mytable group by artist having count(*) > 1;

wich would output

artist   count(*)
45677    2
378798   2