My Table is like
| Cat | Sub_Cat | Amt|
______________________
X | Y | 200
_______________________
X | Z | 1000
__________________________
X | Y | 300
__________________________
A | B | 600
Now i want to write a query where i can Show a summarized report which is grouped by category like this output
| Cat | Sub_Cat | Amt|
______________________
X | Y | 500
_______________________
X | Z | 1000
__________________________
A | B | 600
Kindly help