Subject | RE: [ib-support] Index. Using |
---|---|
Author | Alan McDonald |
Post date | 2002-08-13T08:02:52Z |
correct
-----Original Message-----
From: mivi71dk [mailto:Michael.Vilhelmsen@...]
Sent: Tuesday, 13 August 2002 17:59
To: ib-support@yahoogroups.com
Subject: [ib-support] Index. Using
Hi
If I have created some index without specifing asceding or
descending there are automatically created ascending, correct ?
Then if I an a table with 2 mio. records with an index on a date
field does a
select * from transaktioner where dato>=something order by dato desc
then the DB would not / can not use the created index, correct ?
To use an index I have to create another one saying it is
descending, correct ?
Michael
Yahoo! Groups Sponsor
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[Non-text portions of this message have been removed]
-----Original Message-----
From: mivi71dk [mailto:Michael.Vilhelmsen@...]
Sent: Tuesday, 13 August 2002 17:59
To: ib-support@yahoogroups.com
Subject: [ib-support] Index. Using
Hi
If I have created some index without specifing asceding or
descending there are automatically created ascending, correct ?
Then if I an a table with 2 mio. records with an index on a date
field does a
select * from transaktioner where dato>=something order by dato desc
then the DB would not / can not use the created index, correct ?
To use an index I have to create another one saying it is
descending, correct ?
Michael
Yahoo! Groups Sponsor
ADVERTISEMENT
To unsubscribe from this group, send an email to:
ib-support-unsubscribe@egroups.com
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Non-text portions of this message have been removed]