ENFROM_UNIXTIME(unix_timestamp,format) 返回表示 Unix 时间标记的一个字符串，根据format字符串格...
1. unix_timestamp（date）将时间转换为时间戳,如果参数为空，则处理的是当前的时间（返回从'1970-01...
clock_timestamp()timestamp with time zone当前时间戳(语句执行时变化)select clock_timestamp();2016-07-08 15:14:04.197732-07 current_datedate当前日期select current_date;2016-07-08 current_timetime with time zone当前时间select current_time;15:15:56.394651-07 current_timestamptimestamp with time zo...
from_unixtime(int) = to_timestamp(int) 添加函数unix_timestamp() CREATE FUNCTION unix_timestamp() RETURNS integer AS $$ SELECT (date_part(’epoch’,now()))::integer; $$ LANGUAGE SQL IMMUTABLE; 添加函数from_unixtime() CREATE FUNCTION from_unixtime(int) RETURNS timestamp AS $$ SELECT to...
MySQL的2个常用函数unix_timestamp()与from_unixtime PostgreSQL并不提供,但通过PostgreSQL强大的扩展性可以轻松的解决问题。 话说远在天边,尽在眼前,文档看仔细,问题迎仞解。PostgreSQL 题供extract与date_part取epoch即可 即 unix_timestamp() = round(date_part('epoch',now())) ...
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“Unix Epoch” or “POSIX” represents a DateTime in seconds, elapsed since 00:00:00 UTC, January 1, 1970. Database users may need to retrieve the UNIX timestamp when manipulating the date and time values. In such situations, the EXTRACT() and DATE_PART() functions can be used with ...
SELECTFROM_UNIXTIME(UNIX_TIMESTAMP(UTC_TIMESTAMP())+tz.gmt_offset,'%a, %d %b %Y, %H:%i:%s')ASlocal_timeFROM"Dict"."TimeZoneDetail"tzJOIN"Dict"."TimeZoneToCountry"zONtz.zone_id=z.zone_idWHEREtz.time_start<=UNIX_TIMESTAMP(UTC_TIMESTAMP())ANDz.zone_name='America/Los_Angeles'ORDER...
For example, UNIX_TIMESTAMP(dateColumn) as time_sec. $__timeEpoch(dateColumn) Will be replaced by an expression to convert to a UNIX timestamp and rename the column to time_sec. For example, UNIX_TIMESTAMP(dateColumn) as time_sec. $__timeFilter(dateColumn) Will be replaced by a ...
如果没有使用FX选项,to_timestamp和to_date会跳过输入字符串中的多个空白。例如,to_timestamp('2000 JUN', 'YYYY MON')是正确的,但to_timestamp('2000 JUN', 'FXYYYY MON')会返回一个错误,因为to_timestamp只期望一个空白。FX必须被指定为模板中的第一个项。