如何显示 python time.time() 在 bigquery 中存储为浮点数作为日期时间？

Question

I am a bigquery newbie

we have a table that stores the output from time.time() as float. For example

1671057937.23425
1670884516.891432

How can I select these values such that they are formated/displayed as date and time stamp.

I have tried casting to int64, using various date/time functions like DATE_FROM_UNIX_DATE and TIMESTAMP_MICROS

Any suggestions would be greatly appreciated

Answer 1

In Python, the time() function returns the number of seconds passed since epoch - so you can use below simple approach

select timestamp_micros(cast(1670884516.891432 * 1000000 as int64))

Answer 2

to convert back to readable date time with python:

import datetime

stamp = "1670884516.891432"
readable = datetime.datetime.fromtimestamp(float(stamp))
print(readable)

result:

2022-12-13 01:35:16.891432

Please, formulate the question more clearly.

What do you mean with your words:

How can I select these values...

Do you mean to select with SQL query? Then

SELECT convert(varchar, CURRENT_TIMESTAMP,21) ;