Обсуждение: RE: [GENERAL] SELECT Date

> >I have a table with somedate defined as date.
> >
> >I want to select all rows that are from todays date back to 7 days
> >ago. Or in this case 10-1-1998.
>
> Use the function age() somewhat like this:
>
> select * from sometable
> where date_part( 'epoch' , age( 'now', somedate ) ) > 604800
>
> The 'epoch' date part is the total number of seconds between the two
> dates.
> For other variations, see:
>
> http://www/postgresql.org/docs/user/functions1574.htm
>
Why don't you just use between:
select * from sometable
where somedate between now()::date and (now()::datetime - '@ 7
days'::timespan)::date;
    -DEJ

I tried this but, got the following:

---------------------------------------
mytest=> select fagentname from feedback where ftdate between now()::date and
mytest-> (now()::datetime - '@ 7 days'::timespan)::date;
ERROR:  function date(timestamp) does not exist
---------------------------------------

I have this column identified as type date and not timestamp.

Any suggestions?




On Thu, 8 Oct 1998, Jackson, DeJuan wrote:

>> >I have a table with somedate defined as date.
>> >
>> >I want to select all rows that are from todays date back to 7 days
>> >ago. Or in this case 10-1-1998.
>>
>> Use the function age() somewhat like this:
>>
>> select * from sometable
>> where date_part( 'epoch' , age( 'now', somedate ) ) > 604800
>>
>> The 'epoch' date part is the total number of seconds between the two
>> dates.
>> For other variations, see:
>>
>> http://www/postgresql.org/docs/user/functions1574.htm
>>
>Why don't you just use between:
>select * from sometable
>where somedate between now()::date and (now()::datetime - '@ 7
>days'::timespan)::date;
>    -DEJ
>