, 15 Apr 2009 15:32:42 +0100, Shug Boabby wrote:
I simplified my problem a little too much and now I'm stuck trying to
use cumulative_sum(). My schema is not only A, B but also has a C
A B C
1 0 1
2 1 1
3 0 1
4 2 1
5 1 1
1 0 2
2 1 2
3 0 2
4 2 2
5 1 2
and I want to be able to do
Oh... and also, A, B, C are in the same table.
2009/4/17 Shug Boabby shug.boa...@gmail.com:
Life sure would be easier if that were the case Michal, but no... that
is not the case here. The sum is not a simple sum, it is a sum of all
elements having a lower or equal A and the same C
Michal... I must apologise, your suggestion worked a treat!!!
I never realised it was possible to do a join on a table to itself before!
2009/4/15 Michal Politowski mpol...@meep.pl:
On Wed, 15 Apr 2009 15:32:42 +0100, Shug Boabby wrote:
I simplified my problem a little too much and now I'm
Hello all,
I have a table with 2 bigint columns, let's call them A and B. I need
a query that will allow me to return A alongside the sum of Bs from
rows where A is less than or equal to this row's A. It is best
described with some example data, consider the following:
A B
1 0
2 1
3 0
4 2
5 1
I
+0100, Shug Boabby wrote:
Thanks, I'll look at this... I still have to define cumulative_sum
though, right?
yes. it's just the c function that is obsolete.
Best regards,
depesz
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