>Hi Nadya,
>
>I think i have found it.
>Just a simple thought, but it looks like it works with two different sql statements.
>The first is the same like you said.
>(I created something alike to test)
>
>* Sample data
>Jaar=Year
>Maand=Month
>Bedrag=Amount
>table1 && same as first select
>Jaar Maand
>1999 01
>2000 01
>2000 02
>2000 04
>
>Table2 && original table
>Jaar Maand Bedrag
>2000 01 10
>2000 01 10
>2000 04 40
>1999 01 1
>2000 04 40
>2000 02 20
>
>SQL
>

>select table1.maand,table1.jaar,table1.maand+table1.jaar,sum(table2.bedrag);
>from table1,table2;
>where table2.jaar=table1.jaar and table2.maand between '01' and table1.maand;
>group by 3
>

>
>Output:
>Month Year Dummy Tot_Amount
>01 1999 011999 1
>01 2000 012000 20
>02 2000 022000 42
>04 2000 042000 122

Forgat including count(*) but that does work too
Month Year Dummy Tot_Amount Count
01 1999 011999 1 1
01 2000 012000 20 2
02 2000 022000 42 3
04 2000 042000 122 5

For the quaters you have to do the same.
So in total 4 simple querys.
Probably someone who knows more about SQL than me, can convert this into two statements.

PS. the between function is replaced by the SQL equivalent.