1、北京时间格式 to unix时间格式
数据格式: 2017-11-17 08:28:13 2017-11-17 08:28:10 2017-11-17 08:27:51.343 2017-11-17 08:27:48.021 |
presto单个标准时间转化(10位unix): select to_unixtime(cast ('2017-08-30 10:36:15' as timestamp)) hive单个标准时间转化(10位unix): select unix_timestamp(cast ('2017-08-30 10:36:15' as timestamp)) |
presto单个毫秒时间转化(13位unix): select to_unixtime(cast ('2017-12-01 16:42:08.771' as timestamp)) hive单个毫秒时间转化(自动转为10位unix): select unix_timestamp(cast ('2017-12-01 16:42:08.771' as timestamp)) |
presto变量转化(根据时间格式分别转化为10位unix、13位unix): select to_unixtime(cast (time as timestamp)) from table1 hive变量转化(只能自动转化为10位unix): select unix_timestamp(cast (time as timestamp)) from table1 where d = '2017-12-05' |
2、unix时间格式 to 北京时间格式
数据格式: 1510894478 1510855235 1510855290929 1510873252377 |
presto单个10位unix(变为标准格式): select format_datetime(from_unixtime(1510284058),'yyyy-MM-dd HH:mm:ss') hive单个10位unix(变为标准格式): select from_unixtime(1323308943123,'yyyy-MM-dd HH:mm:ss') |
presto单个13位unix(毫秒格式): select format_datetime(from_unixtime(1510284058.415),'yyyy-MM-dd HH:mm:ss.mmm') hive单个13位unix(毫秒格式):手动截取10位 select from_unixtime(cast(substr(1323308943123,1,10) as int),'yyyy-MM-dd HH:mm:ss') |
Presto 13、10位unix变量转化(只能截取成10位转化成标准格式): select format_datetime(from_unixtime(cast(substr(ts,1,10) as double)),'yyyy-MM-dd HH:mm:ss') from table1 hive变量转化(事先截取10位unix): select from_unixtime(cast(substr(ts,1,10) as int),'yyyy-MM-dd HH:mm:ss') from table1 where d = '2017-12-05' |