Re: Doing INTERVAL with NOW() versus casted timestamp

Wells Oliver <wellsoliver@gmail.com> wrote:

> Why does this give me two different results? 'created' is a date field:
>
> SELECT * FROM foo WHERE created >= '2013-02-16 00:00:00'::timestamp - INTERVAL
> '24 hours'

test=# select '2013-02-16 00:00:00'::timestamp - INTERVAL '24 hours';
      ?column?
---------------------
 2013-02-15 00:00:00
(1 row)




>
> and
>
> SELECT * FROM foo WHERE created >= NOW() - INTERVAL '24 hours'

test=*# select now() - INTERVAL '24 hours';
           ?column?
-------------------------------
 2013-02-15 16:38:51.362674+01
(1 row)



>
> First returns the 12 rows I expect where the 'created' field is 2012-02-15,
> second returns only one.


You can see the difference?






Andreas
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