Re: Order By Date Question

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От Adrian Klaver
Тема Re: Order By Date Question
Дата
Msg-id 200909080733.09819.aklaver@comcast.net
обсуждение исходный текст
Ответ на Order By Date Question  (BlackMage <dsd7872@uncw.edu>)
Список pgsql-general
On Tuesday 08 September 2009 6:29:28 am BlackMage wrote:
> I have a question about ordering by date. I have a table with two fields
> and some date
>
> Name(character varying)  |  Event_Date(timestamp with timezone)
> A                                  |    2009-09-10 5:30:00
> B                                  |    2009-09-10- 00:00:00
> C                                  |    2009-09-11 17:30:00
> D                                  |  2009-09-11  07:30:00
>
>
> I want to order by date and then by name, so I want the result A,B,C,D. The
> problem is when I do a 'SELECT * FROM table_name ORDER BY Event_Date,
> DESC', it includes the actual time (HH:MM:SS) so the order comes out
> B,A,D,C.
>
> So what I am asking is how do I order only by the date? YYYY-MM-DD?
> --
> View this message in context:
> http://www.nabble.com/Order-By-Date-Question-tp25346259p25346259.html Sent
> from the PostgreSQL - general mailing list archive at Nabble.com.

Cast the timestamp to date:

SELECT * FROM table_name ORDER BY Event_Date::date DESC

Though to guarantee the order you want you will have to do:

SELECT * FROM table_name ORDER BY Event_Date::date, Name
--
Adrian Klaver
aklaver@comcast.net

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