Question

I have a table structure

Table1

ID  Hours    Qty      ProductID
1   2        1       100
1   3        5       200
2   6        6       100
2   2        2       200

If productid is (1,2,3) then i need sum ( Qty * Hours),If productid in (200,300,400,500) then i need sum(qty).

I have written a code like this

select ID,case when productid in (1,2,3) then 
          SUM( qty * hrs) 
          when productid in (100,200,300) then   SUM( qty ) end result1

 from Prod group by id ,productid 

but i don’t want to group by productid,i would like to pass it in “IN clause”.How to achieve it.

Answer 1

Move the SUM() outside of the CASE WHEN statement.

SELECT
  ID,
  SUM(case when productid in (1,2,3)       then qty * hrs
           when productid in (100,200,300) then qty
      end) result1
FROM
  Prod
GROUP BY
  ID