Subject | Re: [firebird-support] Optimize query for date ranges |
---|---|
Author | Thomas Steinmaurer |
Post date | 2015-10-12T15:30:54Z |
Niko,
42 isn't a lot. This might also include accessing system tables ...
--
With regards,
Thomas Steinmaurer
http://www.upscene.com/
Professional Tools and Services for Firebird
FB TraceManager, IB LogManager, Database Health Check, Tuning etc.
> Hello all,Hmm, what is the execution time for both queries?
>
> i am running a simple query where the result contains 3 records. The
> query should provide all records in a specific week.
>
> SELECT * FROM ARBEITSEINTEILUNG AS a where a.baustelle = '12345' AND
> WOCHE = '2015-41';
>
> Some times I dont have a week but two dates:
>
> In this case – the very same number of records = 3 is the result set I
> see that the table Arbeitseinteilung gots 42 reads.
>
> SELECT * FROM ARBEITSEINTEILUNG AS a where a.baustelle = '12345' AND
> a.DATUM >= '05.10.2015' AND a.DATUM <= '11.10.2015';
>
> How can I improve the query?
42 isn't a lot. This might also include accessing system tables ...
--
With regards,
Thomas Steinmaurer
http://www.upscene.com/
Professional Tools and Services for Firebird
FB TraceManager, IB LogManager, Database Health Check, Tuning etc.