Re: date with month and year

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От John McKown
Тема Re: date with month and year
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Msg-id CAAJSdjjYKvz1c=82aHeHSuumUEGppTybiRkhAnzCbV8mZc3g=Q@mail.gmail.com
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Ответ на date with month and year  (Daniel Torres <nobeeakon@gmail.com>)
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On Thu, May 21, 2015 at 12:01 PM, Daniel Torres <nobeeakon@gmail.com> wrote:
I everybody, I'm new in the Postgresql world, and have an easy question: Is it possible to have date type data that only contain month and year?, how can I obtain that from a timestamp (without time zone) column?

I've made this, but I think the result is a text, not a date

select extract (Year from '2001-05-01 20:21:00'::TIMESTAMP WITHOUT TIME ZONE)||'-'|| extract(Month from '2001-05-01 20:21:00'::TIMESTAMP WITHOUT TIME ZONE);



Any help is welcome, thanks

Daniel


​I don't think so. Mainly because a date, at least in PostgreSQL, is by definition a month, day, and year. You could just arbitrarily set the day to "01" because every month starts with day 1, I guess.​ Perhaps if you said what you want to do with this type of date field? Of course, if you really wanted to, you could create your own data type and conversions. But that still wouldn't be a "date", exactly.


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John McKown

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