BigQuery将UTC时间转换为本地时间 [英] BigQuery Converting UTC Time to Local time

问题描述

我想知道是否有人知道某种方法或具有将BigQuery UTC时间戳自动转换为本地标准时间或夏时制(在我的情况下为PDT/PST)的功能.

I was wondering if anybody knows a way or has a function that automatically converts a BigQuery UTC timestamp to a local Standard or Daylight saving timezone (PDT/PST in my case).

基本上会根据一年中的时间自动从UTC扣除7或8个小时以得出PDT或PST.

Basically automatically deducting 7 or 8 hours from UTC to give PDT or PST based on the time of the year.

我知道有很多方法可以实现此目的，但是我想知道是否有人知道BigQuery环境中的任何简单，干净和快速的方法.

I know there are many ways I could implement this but I was wondering if anybody knew of any easy, clean and quick way in BigQuery environment.

谢谢

推荐答案

使用标准SQL (截至2016年9月)，您可以访问时区功能，例如 DATE(timestamp_expression [，timezone]):

Using standard SQL (as of sep 2016) you have access to timezone functions such as DATE(timestamp_expression[, timezone]):

#standardSQL
SELECT DATETIME("2008-12-25 15:30:00+07", "America/Los_Angeles") as date;

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