Postgres: How do I format an int timestamp as readable date string?

Question

Say I have a column that contains unix timestamps - an int representing the number of seconds since the epoch. They look like this: 1347085827. How do I format this

Answer 1

Postgresql has a handy built-in function for this: to_timestamp(). Just wrap that function around the column you want:

Select a, b, to_timestamp(date_int) FROM t_tablename