Re: Extract date portion of a datetime field

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От	Scott Ford
Тема	Re: Extract date portion of a datetime field
Дата	18 апреля 2018 г. 20:04:19
Msg-id	CAH-vkx57EPOVUKPhJknp653tcqd6i0KWguoy=UCyt6xrv3ALfw@mail.gmail.com обсуждение исходный текст
Ответ на	Extract date portion of a datetime field (JORGE MALDONADO <jorgemal1960@gmail.com>)
Список	pgsql-novice

Дерево обсуждения

I've used something like this in the past:

SELECT COUNT(p.index_value)

, p.create_datetime::date

FROM people p

GROUP BY p.create_datetime::date

Simple, but it works.

Scott

On Wed, Apr 18, 2018 at 10:01 AM JORGE MALDONADO <jorgemal1960@gmail.com> wrote:

Hello,

I have a table with a datetime field which saves (of course) date and time information. I need to design a query to count the number of records of each date without taking into account the time portion. I have seen that I can use functions like EXTRACT but I do not find how to extract the whole date only.

I will very much appreciate your feedback.

Respectfully,
Jorge Maldonado

Scott Ford
Director of Development

Bullfrog Power Inc.
366 Adelaide Street West, Suite 701
Toronto, ON M5V 1R9

t: 416.300.8443
f: 416.360.8385

w. bullfrogpower.com