MySQL: how do you convert a datetime to unix time?

can I do thi开发者_StackOverflow中文版s is a query?

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See the UNIX_TIMESTAMP() function.

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This can be done in MySQL by using UNIX_TIMESTAMP() or UNIX_TIMESTAMP(date).

If called with no argument, this returns a Unix timestamp (seconds since '1970-01-01 00:00:00' UTC) as an unsigned integer.

If UNIX_TIMESTAMP() is called with a date argument, it returns the value of the argument as seconds since '1970-01-01 00:00:00' UTC.

mysql> SELECT UNIX_TIMESTAMP();
        -> 1196440210
mysql> SELECT UNIX_TIMESTAMP('2007-11-30 10:30:19');
        -> 1196440219

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use the UNIX_TIMESTAMP() function.

http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html#function_unix-timestamp