问题
How do I convert the following format to UNIX timestamps?
A value like: 01-02-2015 10:20 PM should be converted to: 1418273999000
I did try to_timestamp function but its not working for me.
回答1:
If your data is stored in a column called ts, in a table called data, do this:
select extract(epoch from ts) from data
回答2:
To add Joe's answer, you can use date_part, i think it's syntax is clearer than 'extract'.
select date_part('epoch', ts) from data;
来源：https://stackoverflow.com/questions/27740363/how-to-convert-date-time-into-unix-epoch-value-in-postgres