great solutionthanks!
On Wednesday, July 17, 2019, 06:59:44 PM GMT+3, Dimitry Sibiryakov
s...@ibphoenix.com [firebird-support] <firebird-support@yahoogroups.com> wrote:
17.07.2019 17:54, 'Mr. John' mr_joh...@yahoo.com [firebird-support] wrote:
> I want to create a index to improve a query like that:
> SELECT * FROM MYTABLE WHERE EXTRACT(YEAR FROM datein)=2019 AND
>EXTRACT(MONTH FROM
> datein)=1
Rewrite it as
SELECT * FROM MYTABLE WHERE datein between date '2019-01-01' and date
'2019-02-01'
Then you can create an ordinary index for datein.
--
WBR, SD.
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