/* extract current day of week and current hour of day based on UTC */SELECTto_char(now(),'DayHH24');/* extract current day of week and current hour of day based on NYC time zone */SELECTto_char(now()ATTIMEZONE'America/New_York','DayHH24'); 这将输出当前星期几以及基于 UTC 时...
The day of the week (0--6; Sunday is 0) (fortimestampvalues only) SELECT EXTRACT(DOW FROM TIMESTAMP '2001-02-16 20:38:40'); Result: 5 Note thatextract's day of the week numbering is different from that of theto_charfunction. doy The day of the year (1--365/366) (fortimest...
日期和时间函数 selectcurrent_timestamp,localtimestamp,now(); #返回当前日期和时间,localtimestamp不带时区selectextract(dayfromtimestamp'2015-10-07 22:22:22'); #结果07selectextract(monthfromtimestamp'2015-10-07 22:22:22');#结果10selectextract(yearfromtimestamp'2015-10-07 22:22:22');#结果20...
2021-01-01'), extract('year' from TIMESTAMP '2021-01-01') 输出为53|2021 我希望是01年|2021年 我明白isoweek的原则,但我希望这一年从2021年01月01日开始。其目的是使用从这一天开始的间隔来确定周数。 浏览54提问于2021-11-17得票数 0 回答已采纳 1回答 如何在SQL Server中通过选择周数...
Note that extract's day of the week numbering is different from that of the to_char function. doy The day of the year (1--365/366) (for timestampvalues only) ...
WITH first_day_of_month AS ( SELECT DATE_TRUNC('month', CURRENT_DATE) AS first_day ), first_week_start AS ( SELECT CASE WHEN EXTRACT(DOW FROM first_day) = 0 THEN first_day + INTERVAL '1 day' ELSE first_day END AS week_start FROM first_day_of_month ), month_weeks AS ( SELECT...
🎉 Last week, we warned that this week's issue might be a little late in anticipation of the final release of Postgres 17. Well, it's here, so let's get to it :-)__Peter Cooper, your editor Together with Postgres Weekly PostgreSQL 17 Released— The big one is here. It's the...
postgresql Postgres自定义范围类型根据@a_horse_with_no_name和@pozs“我认为您不需要子类型差异”：...
(text, timestamp)centurydaydecadedowdoyepochhourmonthquartersecondweekyeardate_truncextractintervalto_charto_dateto_timestampDate PredicatesoverlapsArray ConstructsANY(array)ARRAY[[4,5,6],..]ARRAY()array_appendarray_catarray_dimsarray_lowerarray_prependarray_to_stringarray_upperSOME(array)string_to_...
def sync_num_votes_past_week(self): """Get the number of votes for this question in the past week.""" last_week = datetime.now().date() - timedelta(days=7) n = QuestionVote.objects.filter(question=self, created__gte=last_week).count() # Use "__range" to ensure the database ...