CURRENT_TIMESTAMP in milliseconds

Question

Is there any way to get milliseconds out of a timestamp in MySql or PostgreSql (or others just out of curiosity)?

SELECT CURRENT_TI         


        

Answer 1

Here's an expression that works for MariaDB and MySQL >= 5.6:

SELECT (UNIX_TIMESTAMP(NOW()) * 1000000 + MICROSECOND(NOW(6))) AS unix_now_in_microseconds;

This relies on the fact that NOW() always returns the same time throughout a query; it's possible that a plain UNIX_TIMESTAMP() would work as well, I'm not sure based on the documentation. It also requires MySQL >= 5.6 for the new precision argument for NOW() function (MariaDB works too).