convert_legacy_hive_parquet_utc_timestamps这个参数主要是用来处理hive写parquet文件,impala读取的问题,本文暂不展开,这里主要介绍下use_local_tz_for_unix_timestamp_conversions这个参数的作用。首先,我们来看下官方的解释:The --use_local_tz_for_unix_timestamp_conversions setting affects conversions from TIMEST...
Formats for unix_timestamp() function in Impala Labels: Apache Hive Apache Impala Mac Noland BS Contributor Created on 02-03-2016 11:36 AM - edited 09-16-2022 03:01 AM Good afternoon, We are making use of the unix_timestamp() function to take different dates ...
sql 代码解读复制代码CREATE OR REPLACE FUNCTION SYS.FROM_UNIXTIME ( TIMESTAMP_ IN NUMBER ) RETURN DATE AS SECONDS_PER_DAY NUMBER := 86400; MASK VARCHAR2(50 CHAR) := 'YYYY-MM-DD HH24:MI:SS'; REF_DATE DATE; BEGIN REF_DATE := TO_DATE('1970-01-01 00:00:00', MASK); RETURN REF...
不涉及convert_legacy_hive_parquet_utc_timestamps这个参数,从始至终,convert_legacy_hive_parquet_utc_timestamps都是false; 2. 笔者的测试环境为impala-2.12.0,如果是impala-3.x的版本,在执行sql之前需要设置:set
(TIMESTAMP_/SECONDS_PER_DAY); END FROM_UNIXTIME; / CREATE OR REPLACE FUNCTION SYS.UNIX_TIMESTAMP ( DATE_ IN DATE ) RETURN NUMBER AS SECONDS_PER_DAY NUMBER := 86400; DIFF_BETWEEN_DATES NUMBER; MASK VARCHAR2(50 CHAR) := 'YYYY-MM-DD HH24:MI:SS'; REF_DATE DATE; BEGIN REF_DATE :...
CREATE FUNCTION (SQL) CREATE FUNCTION (extern) LOCATIE MAKEN CREATE MATERIALIZED VIEW CREATE RECIPIENT CREATE SCHEMA CREATE SERVER CREATE SHARE CREATE STREAMING TABLE CREATE TABLE Table eigenschappen en table opties CREATE TABLE met Hive-indeling ...
What else should I check in order to make this function work? thank you! GHERMAN Alina Reply 4,977 Views 0 Kudos 0 1 ACCEPTED SOLUTION UkrZilla Contributor Created 01-21-2015 02:26 AM I guess you mean Impala. Impala: select unix_timestamp() result: 1 Hive: select unix_timesta...
* to Unix time stamp (in seconds), returns null if fail. * Note that hive Language Manual says it returns 0 if fail, but in fact it returns null. * If the second parameter is missing, use "yyyy-MM-dd HH:mm:ss". * If no parameters provided, the first parameter will be current_...
问在Doctrine Timestampable中使用Unix时间戳EN(我可以理解这一点:在数据库中的错误数据处忘记一行的风险...