Subtotals in Discoverer

Question

Can anyone help me with calculating subtotals in Discoverer. I know discoverer offers subtotal by break in Region or Dist Value. Or like CD, DVD etc.
What I want to achieve is subtotal of all used products as below
CD 120
USED CD 100
DVD 80
USED DVD 20
USED TTL 120
NEW TTL 200
So in above is there any way to subtotal USED TTL, NEW TTL
Thanks is advance

Answer 1

Well, you can't have 'smarts' in a subtotal (ie: a formula), so one method - although not your favourite - would be to alter the 1 column with amounts, to 2 columns with amount - 1 being for used and 1 being for new.
So, you would simply create 2 calculations such as:
1. column labelled USED:
CASE
WHEN SUBSTR(description,1,4) = 'USED' THEN amount
ELSE 0
END
2. column labelled NEW:
CASE
WHEN SUBSTR(description,1,4) <> 'USED' THEN amount
ELSE 0
END
You have to do 2 calculations, not put the second one as an ELSE or something as you want 2 new columns.
Now hide the amount column you had originally.
Now use the normal totalling to sum both columns.
That's one way. (note: sql case statements not tested, but look correct to me).
Russ