1 files changed, 16 insertions, 0 deletions
diff --git a/lib/arel/visitors/to_sql.rb b/lib/arel/visitors/to_sql.rb
index 70e10a5e0f..7eaaff8e13 100644
--- a/lib/arel/visitors/to_sql.rb
+++ b/lib/arel/visitors/to_sql.rb
@@ -373,6 +373,22 @@ key on UpdateManager using UpdateManager#key=
       alias :visit_Time                          :quoted
       alias :visit_TrueClass                     :quoted
 
+      def visit_Arel_Nodes_Multiplication o
+        "#{visit o.left} * #{visit o.right}"
+      end
+
+      def visit_Arel_Nodes_Division o
+        "#{visit o.left} / #{visit o.right}"
+      end
+
+      def visit_Arel_Nodes_Addition o
+        "(#{visit o.left} + #{visit o.right})"
+      end
+
+      def visit_Arel_Nodes_Subtraction o
+        "(#{visit o.left} - #{visit o.right})"
+      end
+
       def visit_Array o
         o.empty? ? 'NULL' : o.map { |x| visit x }.join(', ')
       end