Hive函数总结（二）：时间日期函数_hive时间戳转日期函数

 

    

•     1、时间戳转日期函数：to_date

    语法：to_date(string timestamp)

    说明：将标准格式时间戳转成日期格式

    举例：

    hive> select to_date('2019-06-21 13:21:13') from dual;

        OK

        2019-06-21

        Time taken: 0.102 seconds, Fetched: 1 row(s)

    

•     2、unix时间戳转成当前时区时间格式：from_unixtime

    语法：from_unixtime(timestamp,string format)

    说明：unix时间戳timestamp转成当前时区时间格式format

    举例：

    hive> select from_unixtime(1123240993,'yyyyMMdd HH:mm:ss') from dual;

        OK

        20050805 19:23:13

        

•     3、当前时区时间转unix时间戳：unix_timestamp

    语法：unix_timestamp([date],[dateformat])

    说明：当前时区时间转unix时间戳，formate为时间取位范围

    举例：

    hive> select unix_timestamp('2019-06-15 14:12:00') from dual;

        OK

        1560579120

        Time taken: 0.091 seconds, Fetched: 1 row(s)

    hive> select unix_timestamp('2019-06-15 14:12:00','yyyy-MM-dd') from dual;

        OK

        1560528000

        Time taken: 0.108 seconds, Fetched: 1 row(s)

    hive> select unix_timestamp('2019-06-15 14:12:00','yyyy-MM-dd HH:mm:ss') from dual;

        OK

        1560579120

        Time taken: 0.