如何选择第1列中具有相同值但第2列中具有不同值的行？

Question

I have this query below:

I've managed to filter out the names with the SAME YEAR but DIFFERENT TID, then how to I pick these names out without duplication?

OUTPUT: OK the desire output should be like this per request.

firstname | lastname | year | tid
Alex        Hannum     1956   MI1
Alex        Hannum     1956   ROC
Alex        Hannum     1956   STL
Alex        Hannum     1956   SYR
Alvin       Attles     1969   PH1
Alvin       Attles     1969   SFW
Alvin       Attles     1970   PH1
Alvin       Attles     1970   SFW
Andrew      Levane     1952   MI1
Andrew      Levane     1952   ROC
Andrew      Levane     1952   SYR

.... and so on.

Answer 1

I think you are looking for the players who opt-out two or more tid in a year,

If so you can use the below query on the data you displayed in screen-shot assuming it also has one more column which identify players uniquely.

SELECT firstname , lastname , year , tid FROM player where player_id in (select distinct player_id from player group by firstname , lastname , year having count(*) >1)