如何在 Redshift 中获取当前会话时区？

Question

我知道我可以使用会话时区

SET TIMEZONE TO 'CET';

但有办法找回来吗？我想要类似的东西

SELECT SESSIONTIMEZONE, SYSDATE, SYSDATE::timestamptz, SYSDATE::timestamptz AT TIME ZONE 'UTC', SYSDATE::timestamptz AT TIME ZONE 'CET'; 

我希望返回

UTC| ... 12:23:55.963747 | ... 12:23:55.963747+00 | ... 12:23:55.963747+00 | ... 12:23:55.963747+01

有办法得到吗？我没有看到任何 CURRENT_TIMEZONE 或 GET_TIMEZONE 函数。

Answer 1

您可以使用CURRENT_SETTING('timezone')来获取它或SHOW TIMEZONE;

select current_setting('timezone'), sysdate, sysdate::timestamptz, sysdate::timestamptz at time zone 'utc', sysdate::timestamptz at time zone 'cet';
UTC 2021-03-19 12:48:09.989592  2021-03-19 12:48:09.989592+00   2021-03-19 12:48:09.989592  2021-03-19 13:48:09.989592