On May 29, 2005, at 2:34 PM, [EMAIL PROTECTED] wrote:
you can use mysql variables :
set @total:=0;
select name,price,quantity, price*quantity as
subtotal,@total:[EMAIL PROTECTED]
from fruits;
+--------+-------+----------+----------
+-------------------------------+
| name | price | quantity | subtotal |
@total:[EMAIL PROTECTED] |
+--------+-------+----------+----------
+-------------------------------+
| orange | 1 | 2 | 2 |
2 |
| banana | 1 | 4 | 4 |
6 |
+--------+-------+----------+----------
+-------------------------------+
The total column will be incremented by subtotal in each row.
actually, i need a grand total of the entire ticket:
1 orange x 0.97 = 0.97
+ 3 pears x 1.09 = 3.27
_________________________
4.24 < grand total
i think you're right that variables can be used to do this, but i can't
figure out how to get a grand total for the entire sale.
but, i wouldn't scratch your head about it too much. i sort of gave up
on the idea in favor of doing the calculation in the client code at
runtime after selecting all the pertinent data.
thanks though. :)
- philip
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