diff --git a/activerecord/lib/active_record/calculations.rb b/activerecord/lib/active_record/calculations.rb
index 64527ec3f0746..b5bf82ee11274 100644
--- a/activerecord/lib/active_record/calculations.rb
+++ b/activerecord/lib/active_record/calculations.rb
@@ -178,7 +178,7 @@ def construct_calculation_sql(operation, column_name, options) #:nodoc:
           sql = "SELECT COUNT(*) AS #{aggregate_alias}" if use_workaround
 
           sql << ", #{options[:group_field]} AS #{options[:group_alias]}" if options[:group]
-          sql << " FROM (SELECT DISTINCT #{column_name}" if use_workaround
+          sql << " FROM (SELECT #{distinct}#{column_name}" if use_workaround
           sql << " FROM #{connection.quote_table_name(table_name)} "
           if merged_includes.any?
             join_dependency = ActiveRecord::Associations::ClassMethods::JoinDependency.new(self, merged_includes, options[:joins])
diff --git a/activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb b/activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb
index 92d11e56e1d60..59a51c02792f8 100644
--- a/activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb
@@ -257,7 +257,7 @@ def select(sql, name = nil) #:nodoc:
             record = {}
             row.each_key do |key|
               if key.is_a?(String)
-                record[key.sub(/^\w+\./, '')] = row[key]
+                record[key.sub(/^"?\w+"?\./, '')] = row[key]
               end
             end
             record