MySQL convert datetime to unixtime?

问题

I have a column with the DATETIME format and I would like to convert it to UNIXTIME in the database. What kind of query would that be?

I know how to convert from UNIXTIME to DATETIME, but I've never done the reverse. I've used FROM_UNIXTIME, is there no TO_UNIXTIME?

回答1:

It's UNIX_TIMESTAMP. This will take a properly formatted datetime as an argument.

回答2:

It's okay, I figured it out.

I had 'article_date' for the original column. I created 'new_date' for the new column.

Then I did:

UPDATE news SET new_date = UNIX_TIMESTAMP(article_date)

来源：https://stackoverflow.com/questions/18494493/mysql-convert-datetime-to-unixtime