Not true. Please don't be so quick to answer without first looking up to double-check 😉 You can use a few MySQL functions in order to do this:
SELECT YEAR(FROM_UNIXTIME(`timestamp`)) AS `year`, MONTH(FROM_UNIXTIME(`timestamp`)) AS `month`, DAY(FROM_UNIXTIME(`timestamp`)) AS `day`
FROM `table`
It's possible, you just need to use the FROM_UNIXTIME() function which expects a unix timestamp (which is just the number of seconds from Unix Epoch), which is the format you have. Secondly, you have two options: (1) Use the YEAR(), MONTH(), and DAY() functions to get the individual items or use the second parameter in the FROM_UNIXTIME() function to declare an output type. For example:
SELECT FROM_UNIXTIME(`timestamp`, '%Y') AS `year`, FROM_UNIXTIME(`timestamp`, '%M') AS `month`, FROM_UNIXTIME(`timestamp`, '%D') AS `day`
FROM `tablename`
Or simply put:
SELECT FROM_UNIXTIME(`timestamp`, '%M/%D/%Y') AS `date`
FROM `tablename`