MYSQL - datetime to seconds

Question

I wasn\'t able to find out (googling, reading mysql reference manual) how to get value of DATETIME in seconds in MySQL.

I dont mean to extract secon

Answer 1

If by "convert to seconds", you mean "convert to an UNIX Timestamp" (i.e. number of seconds since 1970-01-01), then you can use the UNIX_TIMESTAMP function :

select UNIX_TIMESTAMP(your_datetime_field)
from your_table
where ...

And, for the sake of completness, to convert from an Unix Timestamp to a datetime, you can use the FROM_UNIXTIME function.

Answer 2

Use TIME_TO_SEC in previous versions for mysql

SELECT TIME_TO_SEC(time column) FROM table

Answer 3

The function UNIX_TIMESTAMP(datetime) returns the unix time, which happens to be the number of seconds since 1-Jan-1970 0000 UTC. That may be what you need, but not if you're dealing with dates of birth, historical dates, or dates after 2037.

Answer 4

I have created my own query for your problem:

SELECT HOUR(`colname`) * 3600 + MINUTE(`colname`) * 60 + SECOND(`colname`)
FROM widgets
WHERE id = 1;

• Use id = 1 if you have to take a specific row.
• The output will be in seconds.

Answer 5

i used in mysql

TO_SECONDS(your date goes here) method to convert date to seconds from year 0

http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html

Answer 6

Starting in mysql 5.5.0 you can use to_seconds()

TO_SECONDS(FIELD_NAME)

FIELD_NAME must be DATETIME type