MySQL select formatted date from millisecond field

Question

I have a column in a MySQL database that contains a date as milliseconds (epoch). I want to build an SQL query that formats the date as something human readable (day, month, yea

Answer 1

Try using the FROM_UNIXTIME function like this as given in the manual

SELECT FROM_UNIXTIME(1196440219);
 -> '2007-11-30 10:30:19'

You could also use formatting like this

mysql> SELECT FROM_UNIXTIME(UNIX_TIMESTAMP(),
    ->                      '%Y %D %M %h:%i:%s %x');
    -> '2007 30th November 10:30:59 2007'

Answer 2

CREATE DEFINER=`root`@`localhost` FUNCTION `ConvertTimeDelta`(duration int) RETURNS 
varchar(20) CHARSET utf8mb4
    DETERMINISTIC
BEGIN
 DECLARE time_delta VARCHAR(20);
 DECLARE date_format VARCHAR(20);
 SET date_format = IF (duration > 3599999, '%H:%i:%s', '%i:%s');
 SET time_delta = TIME_FORMAT(SEC_TO_TIME(duration/1000), date_format);
 RETURN time_delta;
END

For example select ConvertTimeDelta(4800240) result = 01:20:00 select ConvertTimeDelta(35076) result = 00:35

Answer 3

If you want to get the microsecond from a field, use %f,

select FROM_UNIXTIME(DATE_COLUMN/1000,'%Y-%M-%d %H:%i:%s %f') from TABLE_NAME;

+-------------------------------------------------------+
| FROM_UNIXTIME(CREATETIME/1000,'%Y-%M-%d %H:%i:%s %f') |
+-------------------------------------------------------+
| 2016-March-18 16:02:54 342000                         |
+-------------------------------------------------------+

Source : MYSQL DATE_FORMAT