Would there be a performance penalty?
Because, for each row SELECT for COUNT will be executed?

Regards
Yusuf

________________________________

From: firebird-support@yahoogroups.com
[mailto:firebird-support@yahoogroups.com] On Behalf Of joseph
Sent: Tuesday, July 17, 2007 12:34 PM
To: firebird-support@yahoogroups.com
Subject: RE: [firebird-support] Simple SQL question



I would have done it like this:

Select t1.Field1, t1.Field2, SUM(t1.Field3),
(select count(*) from table1 t2) as totalcount
from t1.Table1
Group by 1,2

-----Original Message-----
From: firebird-support@yahoogroups.com
<mailto:firebird-support%40yahoogroups.com>
[mailto:firebird-support@yahoogroups.com
<mailto:firebird-support%40yahoogroups.com> ] On Behalf Of Yusuf Celik
Sent: Tuesday, July 17, 2007 11:59 AM
To: firebird-support@yahoogroups.com
<mailto:firebird-support%40yahoogroups.com>
Subject: RE: [firebird-support] Simple SQL question

I haven't tested but the following should work.
SELECT COUNT(*) FROM (
Select
Field1,
Field2,
SUM(Field3)
from Table1
Group by 1,2
)

Regards
Yusuf

________________________________

From: firebird-support@ <mailto:firebird-support%40yahoogroups.com>
yahoogroups.com
[mailto:firebird-support@ <mailto:firebird-support%40yahoogroups.com>
yahoogroups.com] On Behalf Of Michael
Vilhelmsen
Sent: Tuesday, July 17, 2007 10:47 AM
To: firebird-support@ <mailto:firebird-support%40yahoogroups.com>
yahoogroups.com
Subject: [firebird-support] Simple SQL question

Hi

I have a rutine in which I would like to have a progressbar.

The SQL is like this:

Select
Field1,
Field2,
SUM(Field3)
from Table1
Group by 1,2

I would like to be able to count how many records there will be
returned to me by this SQL.

Can I do that ?

Regards Michael

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