Oracle SQL查询需要根据时区进行更改 [英] Oracle sql query needs to change based on timezone

问题描述

我有一个SQL查询来获取日期范围内的记录.当我分析数据时，我的查询工作发现了byut，我发现记录是根据GMT时区值重新记录的，从而使结果不正确.

I have a sql query to obtainrecords for a date range. My query works find byut when I analyzed data, I found that the records are retirved base don GMT timezone value, thus making the restults incorrect.

我从数据库中的unix epoch值中获取时间.

I get my time from a unix epoch value in database.

SELECT tableA.columnA,tableB.columnB 
FROM tableA INNER JOIN tableB ON  tableA.aId = tableB.aId 
WHERE (to_date('1970-01-01 00:00:00 +10:00','yyyy-MM-dd hh24:mi:ss') +    (tableB.epochValue/60/60/24/1000)) >  to_date('--FROM_DATE--', 'yyyy-MM-dd hh24:mi:ss') 
AND (to_date('1970-01-01 00:00:00 +10:00','yyyy-MM-dd hh24:mi:ss') + (tableB.epochValue/60/60/24/1000)) <= to_date('--TO_DATE--', 'yyyy-MM-dd hh24:mi:ss');

我想获取基于我的时区(GMT + 10)的记录，但是此脚本基于GMT时区获取数据. 我想知道如何通过时区来获取正确的日期对象

I want to obtain the records based on my timezone which is GMT+10 but this script gets data based on GMT timezone. I was wondering how to pass my timezone to obtain the correct date object

使用 http://www.epochconverter.com/，我获得了这些值 我的时代价值-1345079730 GMT:2012年8月16日，星期四GMT 您的时区:2012年8月16日星期四，格林尼治标准时间+10

using http://www.epochconverter.com/, I obtained these values my epoch value - 1345079730 GMT: Thu, 16 Aug 2012 01:15:30 GMT Your time zone: Thu Aug 16 2012 11:15:30 GMT+10

我的数据库是-Oracle Database 11g企业版11.2.0.2.0版-64位

My database is - Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit

推荐答案

找到了我的问题的答案.

Found the answer to my question.

显然，在计算历元值时，您还需要考虑时区设置

apparently, you need to consider the time zone settings when you calculate epoch value as well

1. 将纪元值增加10小时(10 * 60 * 60 * 1000毫秒)-纪元当前值位于格林尼治标准时间(GMT)，因此将其设为EST(GMT + 10)，

2. 使用TO_TIMESTAMP_TZ而不是to_date

1. add 10 hours (10*60*60*1000 milliseconds) to epoch value - epoch current value is in GMT so to make it EST (GMT+10), I added this.

2. Used TO_TIMESTAMP_TZ instead of to_date

SELECT tableA.columnA,tableB.columnB 
FROM tableA INNER JOIN tableB ON  tableA.aId = tableB.aId 
WHERE (TO_TIMESTAMP_TZ('1970-01-01 00:00:00 +10:00','yyyy-MM-dd hh24:mi:ss TZH:TZM') +    ((tableB.epochValue+(10*60*60*1000))/60/60/24/1000)) >  to_date('##FROM_DATE## +10:00', 'yyyy-MM-dd hh24:mi:ss TZH:TZM') 
AND (TO_TIMESTAMP_TZ('1970-01-01 00:00:00 +10:00','yyyy-MM-dd hh24:mi:ss TZH:TZM') + ((tableB.epochValue+(10*60*60*1000))/60/60/24/1000)) <= to_date('##TO_DATE## +10:00', 'yyyy-MM-dd hh24:mi:ss TZH:TZM');

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