Heroku PostgreSQL GROUP_BY error in Rails app

Question

I\'ve got a rails app that works fine in development (SQLite) but is throwing lots of errors when I\'ve deployed it via Heroku, which uses PostgreSQL I gather.

the e

Answer 1

Practice.group(Practice.col_list)



def self.col_list
  Practice.column_names.collect {|c| "practices.#{c}"}.join(",")
end