这会是什么样的约会风格？

Question

我有一个 table 列定义为：

"timestamp" int8 NULL,

它存储的值如下 '1638462043745210034' 当我尝试将其转换为 timestamp 或 timestamp with time-zone

SELECT '1638462043745210034'::timestamp at time zone 'UTC' ;

它returns一个错误：

date/time field value out of range: "1638462043745210034" Hint: Perhaps you need a different "datestyle" setting.

可以是什么datestyle，如何转换成普通时间戳？

Answer 1

自纪元以来看起来像纳秒：

SELECT to_timestamp(1638462043745210034 / 1000000000.0);

         to_timestamp         
══════════════════════════════
 2021-12-02 17:20:43.74521+01
(1 row)

这会是什么样的约会风格？

What kind of datestyle can this be?

sql

postgresql

psql