Question

I’ve got a Table that stores messages
like this:
codMsg, message, anotherCod

1, 'hi', 1
2, 'hello', 1
3, 'wasup', 1
4, 'yo', 2
5, 'yeah', 2
6, 'gogogo', 3

I was wondering if is possible to select top 1 of each anotherCod

What I expect:

1, 'hi', 1
4, 'yo', 2
6, 'gogogo', 3

I want the whole line, not just the number of the anotherCod, so group by should not work

Answer 1

select mytable.*
from mytable
join (select min(codMsg) as codMsg, anotherCod from mytable group by 2) x    
    on mytable.codMsg = x.codMsg