Question

Here is an example table for my problem:

100     IDO     0514443421
100     IDO     0504899721
100     IDO     0508843421
101     LIRAN   0523399721
101     LIRAN   0524899721
102     ERAN    0593369721
102     ERAN    0599999721

I want to get back a row like that:

100, IDO, 0514443421, 0504899721, 0508843421

I’m aware of the problematic fact of the changing rows number. I can settle for fixed 3 output columns, some of them can be empty.

Any good method for achieving this?

Thank u in advance.

Answer 1

Try:

;with cte as 
(select id,
        colA,
        colB,
        rownumber() over (partition by id, colA order by colB) rn
 from myTable)
select id, colA, t1.colB colB1, t2.colB colB2, t3.colB colB3
from cte t1
left join cte t2 on t1.id = t2.id and t1.colA = t2.colA and t2.rn = 2
left join cte t3 on t1.id = t3.id and t1.colA = t3.colA and t3.rn = 3
where t1.rn = 1