Is it possible in a Select query to get values from the previously read row
in order to do things like cumulative sums or other formulas which require
the previous value in order to calculate the current value.
ex.
day current sales cumu_total
----- ------------------- ----------------
1 120 120
2 60 180
3 125 305
4 40 345
I'd like to be able to do this in one select statement
is this even possible?
Roger Karnouk
[EMAIL PROTECTED]
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