Question

I am still having trouble creating an running total based on the increasing order of the value. Row id has no real meaning, it is just the PK. My server doesn’t support OVER.

Row Value
1 3
2 7
3 1
4 2

Result:

Row Value
3 1
4 3
1 6
2 13

I have tried self and cross joins where I specify that the value of the second amount(the one being summed up) is less than the current value of the first. I have also tried doing this with the having clause but that always threw an error when I tried it that way. Can someone explain why it would be wrong to use it in that manner and how I should be doing it?

Answer 1

Here is one way to do a running total:

select row, value,
       (select sum(value) from t t2 where t2.value <= t.value) as runningTotal
from t