Question

I have a table called ‘MyTable’ that looks like:

ID | Item | Type | Value
1  | 100  | 60   | 37
2  | 100  | 72   | 24
3  | 200  | 60   | 18
4  | 300  | 60   | 43
5  | 300  | 72   | 76

And I would like to put together an MS SQL query to obtain the following:

Item | Type_60 | Type_72
100  | 37      | 24
200  | 18      | NULL
300  | 43      | 76

most probably I am not allowed to use PIVOT (that anyway I did not understand how to use for this purpose!).

So far I could only come out with the following:

select Item,
    CASE Type WHEN 60 THEN Value END as 'Type_60',
    CASE Type WHEN 72 THEN Value END as 'Type_72'
from MyTable

but this gives me the following:

Item | Type_60 | Type_72
100  | 37      | NULL
100  | NULL    | 24
200  | 18      | NULL
300  | 43      | NULL
300  | NULL    | 76

Can anyone hlep me?

Answer 1

You’re almost there, just add group by Item at the end, and wrap the case in an aggregate:

select Item,
    max(CASE Type WHEN 60 THEN Value END) as 'Type_60',
    max(CASE Type WHEN 72 THEN Value END) as 'Type_72'
from MyTable
group by Item