I would like to query a table with two columns, 1st being just a key field,
second being a debit field (float) ie
service | debit
1 | 50
2 | 100
3 | -30
I would like to query the table with a select and get back a balance field
calculated at run time as well ie
select debit, balance()
debit | debit
50 | 50
100 | 150
-30 | 120
Is this possible in MySQL? I read that I may be able to say create
function balance() to create that function, but I don't know how to do that!
Any ideas would be muchly appreciated.