Group by - sub query

Question

A table has three columns - id (primary key), categoryID (numeric) and amount (numeric).
The goal is to provide a query that would show categoryID and sum of amounts within that category where categoryID is an odd number and sum of amounts is greater than 100,000

Answer 1

By category within id:
SELECT  id,
        categoryID,
        SUM(amount)
  FROM  tbl
  WHERE MOD(categoryID,2) = 1
  GROUP BY id,
           categoryID
  HAVING SUM(amount) > 100000
/By category across all ids:
SELECT  categoryID,
        SUM(amount)
  FROM  tbl
  WHERE MOD(categoryID,2) = 1
  GROUP BY categoryID
  HAVING SUM(amount) > 100000
/SY.
Edited by: Solomon Yakobson on Nov 15, 2009 8:02 AM