將一個時區的日期時間值轉換爲Vertica中的另一個時區

Question

Vertica中是否有任何內容可以獲得與Oracle中以下Sql查詢所提供的輸出相同的輸出？

SELECT FROM_TZ(CAST(TO_DATE('1999-12-01 11:00:00', 
     'YYYY-MM-DD HH:MI:SS') AS TIMESTAMP), 'America/New_York') 
    AT TIME ZONE 'America/Los_Angeles' "West Coast Time" 
    FROM DUAL; 

West Coast Time 
------------------------------------------------ 
01-DEC-99 08.00.00.000000 AM AMERICA/LOS_ANGELES 

Answer 1

我能夠轉換。下面給出的示例查詢：

SELECT TIMESTAMP WITH TIME ZONE '2012-07-02 10:00:00-04' AT TIME ZONE 'GMT'; 
     timezone 
--------------------- 
2012-07-02 14:00:00 
(1 row) 


SELECT TIMESTAMP WITH TIME ZONE '2012-07-02 14:00:00-00' AT TIME ZONE 'EDT'; 
     timezone 
--------------------- 
2012-07-02 10:00:00 
(1 row) 

Answer 2

可能會有所幫助。還有是Oracle

https://docs.oracle.com/cd/B28359_01/olap.111/b28126/dml_functions_2036.htm

select NEW_TIME (TO_DATE ('2011/11/11 01:45', 'yyyy/mm/dd HH24:MI'), 'AST', 'MST') from dual; 

用於此目的的功能