Question

I’ve a table like this And I want to rank it based on combination of cksid and guid.

cksid       guid
----------- -----------
1           301
1           301
1           301
2           303
2           303
3           303
4           303
4           303
4           303

Output should be like

cksid       guid           rank
----------- ----------- ----------
1           301             1
1           301             2
1           301             3
2           303             1
2           303             2
3           303             1
4           303             1
4           303             2
4           303             3

Answer 1

try this:

You just have to use the row_number function

 select cksid ,guid ,
    row_number() over (partition by cksid ,guid order by (select 0)) as rank
    from <Table>

row_number() requires an order by clause. Here you dont have a third column to order by. So I am just putting (Select 0) which will order the output in any order, which doesn’t matter to us. We could have given order by cksid ,guid also , but I think which is a little over head as we can get the same result by just giving (select 0)