Hive date_trunc函数

date_trunctrunc

date_trunc('field', source)

sourcetimestampintervaldatetimetimestampintervalfieldtimestampinterval

field

microseconds

milliseconds

second

minute

hour

day

week

month

quarter

year

decade

century

millennium

Examples:

SELECT date_trunc('hour', TIMESTAMP '2001-02-16 20:38:40'); Result: 2001-02-16 20:00:00 SELECT date_trunc('year', TIMESTAMP '2001-02-16 20:38:40'); Result: 2001-01-01 00:00:00

来源：博客园

作者：李小智

链接：https://www.cnblogs.com/lixiaozhi/p/11670831.html