date_format(from_unix_time(`my_date`), '%e %b %Y') AS 'date_formatted'
cast(my_date as DATE)
#--------------------------------SQL SERVER----------------------------------
#use this to convert forom bigint unix to datetime
#replace 1500123123 with your number
select DATEADD(second,1500123123, CAST('1970-01-01 00:00:00' AS datetime))
#it's way better to put this in a function and call the function