> On Oct 11, 2015, at 5:00 AM, 'Parzival' [email protected] > [firebird-support] <[email protected]> wrote: > 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? >
Do you have an index on DATUM? What ate the plans for the two queries? Good luck, Ann
