2 files changed, 4 insertions, 2 deletions
diff --git a/activerecord/lib/arel/nodes/bind_param.rb b/activerecord/lib/arel/nodes/bind_param.rb
index f145e44ae3..344e46479f 100644
--- a/activerecord/lib/arel/nodes/bind_param.rb
+++ b/activerecord/lib/arel/nodes/bind_param.rb
@@ -28,8 +28,8 @@ module Arel # :nodoc: all
         value.respond_to?(:infinite?) && value.infinite?
       end
 
-      def boundable?
-        !value.respond_to?(:boundable?) || value.boundable?
+      def unboundable?
+        value.respond_to?(:unboundable?) && value.unboundable?
       end
     end
   end
diff --git a/activerecord/lib/arel/nodes/case.rb b/activerecord/lib/arel/nodes/case.rb
index 654a54825e..b8f83128c8 100644
--- a/activerecord/lib/arel/nodes/case.rb
+++ b/activerecord/lib/arel/nodes/case.rb
@@ -3,6 +3,8 @@
 module Arel # :nodoc: all
   module Nodes
     class Case < Arel::Nodes::Node
+      include Arel::AliasPredication
+
       attr_accessor :case, :conditions, :default
 
       def initialize(expression = nil, default = nil)