Michael, this is working perfectly!
I learned a lot with your code.
Thanks a lot for your help.
gert
2013/3/2 Michael Black <mdblac...@yahoo.com>
> I think your "K" row was a typo on the CumulativeValue?
>
> CREATE TABLE [Test] (TextField, ValueField, CumulativeValue, BreakPoint
> DEFAULT 10, GroupName);
> CREATE TABLE [MyGroup](GroupName);
> insert into [MyGroup] values(1);
> create trigger trig1 before insert on [Test]
> when 10 <= (select sum(ValueField) from [Test] where GroupName=(select
> GroupName from [MyGroup]))
> begin
> update [MyGroup] set GroupName = (select GroupName+1 from
> [MyGroup]);
> end;
> create trigger trig2 after insert on [Test]
> begin
> update [Test] set GroupName = (select GroupName from [MyGroup])
> where
> rowid=new.rowid;
> update [Test] set CumulativeValue = (select sum(ValueField) from
> [Test] where GroupName=(select GroupName from [MyGroup])) where
> rowid=new.rowid;
> end;
> insert into [Test] values('A', '2', null, '10',(select GroupName from
> MyGroup));
> insert into [Test] values('B', '3', null, '10',(select GroupName from
> MyGroup));
> insert into [Test] values('C', '2', null, '10',(select GroupName from
> MyGroup));
> insert into [Test] values('D', '4', null, '10',(select GroupName from
> MyGroup));
> insert into [Test] values('E', '5', null, '10',(select GroupName from
> MyGroup));
> insert into [Test] values('F', '1', null, '10',(select GroupName from
> MyGroup));
> insert into [Test] values('G', '1', null, '10',(select GroupName from
> MyGroup));
> insert into [Test] values('H', '5', null, '10',(select GroupName from
> MyGroup));
> insert into [Test] values('I', '11', null, '10',(select GroupName from
> MyGroup));
> insert into [Test] values('J', '8', null, '10',(select GroupName from
> MyGroup));
> insert into [Test] values('K', '2', null, '10',(select GroupName from
> MyGroup));
> select * from [Test];
> A|2|2|10|1
> B|3|5|10|1
> C|2|7|10|1
> D|4|11|10|1
> E|5|5|10|2
> F|1|6|10|2
> G|1|7|10|2
> H|5|12|10|2
> I|11|11|10|3
> J|8|8|10|4
> K|2|10|10|4
>
>
> -----Original Message-----
> From: sqlite-users-boun...@sqlite.org [mailto:
> sqlite-users-boun...@sqlite.org] On Behalf Of Gert Van Assche
> Sent: Saturday, March 02, 2013 7:47 AM
> To: sqlite-users
> Subject: [sqlite] Break on cumulative sum
>
> All, I don't know how to achieve this: I need to put the cumulative sum in
> a field, and create a group as soon as that cumulative sum is over a
> breakpoint value (10).
>
> This is an example table:
>
> CREATE TABLE [Test] (TextField, ValueField, CumulativeValue, BreakPoint
> DEFAULT 10, GroupName);
> insert into [Test] values('A', '2', null, '10');
> insert into [Test] values('B', '3', null, '10');
> insert into [Test] values('C', '2', null, '10');
> insert into [Test] values('D', '4', null, '10');
> insert into [Test] values('E', '5', null, '10');
> insert into [Test] values('F', '1', null, '10');
> insert into [Test] values('G', '1', null, '10');
> insert into [Test] values('H', '5', null, '10');
> insert into [Test] values('I', '11', null, '10');
> insert into [Test] values('J', '8', null, '10');
> insert into [Test] values('K', '2', null, '10');
>
> I'd like to end up with a table that looks like this:
>
> TextField ValueField CumulativeValue BreakPoint GroupName
> A 2 2 10 1
> B 3 5 10 1
> C 2 7 10 1
> D 4 11 10 1
> E 5 5 10 2
> F 1 6 10 2
> G 1 7 10 2
> H 5 12 10 2
> I 11 11 10 3
> J 8 8 10 4
> K 2 2 10 4
>
> I spent hours trying to update the CumulativeValue field untill the
> BreakPoint value is crossed, and restarting the cumulative counter, but I
> have too little sql knowledge to do this.
>
> Could anyone help me?
>
> thanks
>
> gert
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