Subject | Re: [firebird-support] More FB 2.0 / FB1.5 optimizer differences |
---|---|
Author | Hans |
Post date | 2006-12-04T23:28:14Z |
Without the DISTINCT clause, I would get hundreds or more identical rows
back,
basically all customers that bought a product at a certain place. Of course
the same
customer buys the same product at the same place many time over and over in
a
certain time span.
I don't think that I can achieve the same with a GROUP BY. I'll look it up
:)
Currently, the returned results are correct and identical using either
FB1.5
or FB2.0 with an identical ODS11.0 copy of the FB1.5 ODS10.1 database.
Best Regards
Hans
back,
basically all customers that bought a product at a certain place. Of course
the same
customer buys the same product at the same place many time over and over in
a
certain time span.
I don't think that I can achieve the same with a GROUP BY. I'll look it up
:)
Currently, the returned results are correct and identical using either
FB1.5
or FB2.0 with an identical ODS11.0 copy of the FB1.5 ODS10.1 database.
Best Regards
Hans
----- Original Message -----
From: "Ann W. Harrison" <aharrison@...>
To: <firebird-support@yahoogroups.com>
Sent: Monday, December 04, 2006 3:27 PM
Subject: Re: [firebird-support] More FB 2.0 / FB1.5 optimizer differences
> Hans wrote:
>> What I'm I doing wong ?
>> Any ideas ?
>
> Your select list is odd in that it has a DISTINCT and then
> a series of simple field references. That probably makes
> sense in your application but I don't know that it's legal
> SQL. I'd expect to see that done with a GROUP BY...
>
>
> Regards,
>
>
> Ann
>
>
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