How to round an average to 2 decimal places in PostgreSQL?

Question

I am using PostgreSQL via the Ruby gem \'sequel\'.

I\'m trying to round to two decimal places.

Here\'s my code:

SELECT ROUND(AVG(some_column)         


        

Answer 1

Error:function round(double precision, integer) does not exist

Solution: You need to addtype cast then it will work

Ex: round(extract(second from job_end_time_t)::integer,0)