Calculate should not remove ordering for MSSQL

Author: aidanharan

lib/active_record/connection_adapters/sqlserver/core_ext/calculations.rb

@@ -6,6 +6,25 @@ module ConnectionAdapters
     module SQLServer
       module CoreExt
         module Calculations
+
+          # Same as original except we don't perform PostgreSQL hack that removes ordering.
+          def calculate(operation, column_name)
+            if has_include?(column_name)
+              relation = apply_join_dependency
+
+              if operation.to_s.downcase == "count"
+                unless distinct_value || distinct_select?(column_name || select_for_count)
+                  relation.distinct!
+                  relation.select_values = [ klass.primary_key || table[Arel.star] ]
+                end
+              end
+
+              relation.calculate(operation, column_name)
+            else
+              perform_calculation(operation, column_name)
+            end
+          end
+
           private
 
           def build_count_subquery(relation, column_name, distinct)