Controlbreak flag in result?

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Bernd Hohmann - 18 Apr 2006 12:04 GMT

I need a control break flag in my result when a certain value is
different to the previous.

A table/result like this:

PRODUCER ARTICLE
80000 1 <- flag = 1
80000 2 <- flag = 0
80000 3 <- flag = 0
80001 1 <- flag = 1
80001 2 <- flag = 0
80001 3 <- flag = 0

any ideas?

Bernd

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Ian - 18 Apr 2006 12:23 GMT

> I need a control break flag in my result when a certain value is
> different to the previous.
[quoted text clipped - 12 lines]
>
> Bernd

select
producer,
article,
case when rn = 1 then 1 else 0 end as flag
from
(select
producer,
article,
rownumber() over (partition by producer order by article) as rn
from
yourtable) as x;

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Bernd Hohmann - 18 Apr 2006 12:44 GMT

>> any ideas?
>
[quoted text clipped - 9 lines]
> from
> yourtable) as x;

Thanks a lot. I was able to compress this a little bit into

case when (rownumber() over (partition by producer order by article ))=1
then 1 else 0 end as cbflag

without the additional select (don't know why it works, SQL is sometimes
a mystery to me).

Bernd

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