Question

I have a table structured as such:

Pricing_Group

GroupID     |   QTY
TestGroup1  |   1
TestGroup1  |   2
TestGroup1  |   4
TestGroup1  |   8
TestGroup1  |   22
TestGroup2  |   2
TestGroup3  |   2
TestGroup3  |   5

What I’m looking for is a result like this:

Pricing_Group

GroupID     |   QTY1    |   QTY2    |   QTY3    |   QTY4    |   QTY5
TestGroup1  |   1       |   2       |   4       |   8       |   22
TestGroup2  |   2       |   NULL    |   NULL    |   NULL    |   NULL
TestGroup3  |   2       |   5       |   NULL    |   NULL    |   NULL

Note that there can only ever be a maximum of 5 different quantities for a given GroupID, there’s just no knowing what those 5 quantities will be.

This seems like an application of PIVOT, but I can’t quite wrap my head around the syntax that would be required for an application like this.

Thanks for taking the time to look into this!

Answer 1

You can pivot on a generated rank;

;with T as (
    select
        rank() over (partition by GroupID order by GroupID, QTY) as rank,
        GroupID, 
        QTY
    from
        THE_TABLE
)
select 
    * 
from 
    T
pivot (
    max(QTY) 
    for rank IN ([1],[2],[3],[4],[5])
) pvt

>> 
GroupID     1     2     3     4     5
----------------------------------------
TestGroup1  1     2     4     8     22
TestGroup2  2     NULL  NULL  NULL  NULL
TestGroup3  2     5     NULL  NULL  NULL