日期和时间运算符
时区转化
代码语言:javascript复制SELECT timestamp '2012-10-31 01:00 UTC';
2012-10-31 01:00:00.000 UTC
SELECT timestamp '2012-10-31 01:00 UTC' AT TIME ZONE 'America/Los_Angeles';
2012-10-30 18:00:00.000 America/Los_Angeles
时间戳、时间和日期
代码语言:javascript复制select
'1633939200000',
substr('1633939200000',1,10) as a,
from_unixtime(cast(substr('1633939200000',1,10) as int)) as b, -- 将13位毫秒级的unix timestamp截取到秒级别
format_datetime(from_unixtime(cast(substr('1633939200000',1,10) as int)),'yyyy-MM-dd')
结果:
1633939200000 | 1633939200 | 2021-10-11 16:00:00.000 | 2021-10-11 |
---|
比较举例
代码语言:javascript复制select current_timestamp >TIMESTAMP '2021-10-11 16:00'
结果 :
True
官方链接