Ok thank you very much, but the suggestion (
SQL:when field = '2006-09-06'::date) does not retrieve any row. It does not retrive any error too, but the suggestion does not applied to my requisition.
The second suggestion is quite correct but I would like to use the between expression.
Best regards to both
Ezequias
2006/11/10, A. Kretschmer < andreas.kretschmer@schollglas.com>:am Fri, dem 10.11.2006, um 12:50:38 -0200 mailte Ezequias Rodrigues da Rocha folgendes:
> > select * from base.table
> > where when
> > between
> > '2006-09-06 00:00: 00.000000'
> > and
> > '2006-09-06 23:59:59.999999'
> > order by 2
> >
> > Is there a simplest way or not ?
>
> Yes. ... where when = '2006-09-06'::date.
>
>
> I didn't understand you. Wha you mean '::date' ?
This is a so called CAST. For example:
test=# select now();
now
-------------------------------
2006-11-10 16:19:49.543082+01
(1 row)
test=# select now()::date;
now
------------
2006-11-10
(1 row)
Read more about this:
16:23 < akretschmer> ??cast
16:23 < rtfm_please> For information about cast
16:23 < rtfm_please> see http://www.postgresql.org/docs/current/static/sql-createcast.html
16:23 < rtfm_please> or http://www.postgresql.org/docs/current/static/sql-expressions.html#SQL-SYNTAX-TYPE-CASTS
>
> And if I have a period of time bigger than 1 day ?
BETWEEN includes the boundaries, if you have full days so say something
like 'between first_day and last_day'.
Do you need time-boundaries? Rewrite your query to something like
'where time_column > time_1 and time_column < time_2'
Andreas
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Atenciosamente (Sincerely)
Ezequias Rodrigues da Rocha
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A pior das democracias ainda é melhor do que a melhor das ditaduras
The worst of democracies is still better than the better of dictatorships
http://ezequiasrocha.blogspot.com/
