lib/rdbms_functions.rb

@@ -3,7 +3,7 @@ module RDBMSFunctions

                     adapter_type = connection.adapter_name.downcase.to_sym
              

                     case adapter_type
              

                       when :mysql
              

                -        "DATE_ADD(`#{source}`, INTERVAL #{unit} #{AMOUNT})"
              

                +        "DATE_ADD(`#{source}`, INTERVAL #{amount} #{unit})"
              

                       when :postgresql    
              

                         "(#{source} + INTERVAL '#{amount} #{unit}')"
              

                       else