1 files changed, 1 insertions, 7 deletions
diff --git a/lib/arel/algebra/relations/operations/project.rb b/lib/arel/algebra/relations/operations/project.rb
index 8136f7ce9b..b78d5d3e97 100644
--- a/lib/arel/algebra/relations/operations/project.rb
+++ b/lib/arel/algebra/relations/operations/project.rb
@@ -5,6 +5,7 @@ module Arel
     def initialize(relation, *projections)
       super(relation)
       @projections = projections.collect { |p| p.bind(relation) }
+      @attributes = nil
     end
 
     def attributes
@@ -15,13 +16,6 @@ module Arel
       attributes.any? { |a| a.respond_to?(:aggregation?) && a.aggregation? } || relation.externalizable?
     end
 
-    def == other
-      super ||
-        Project === other &&
-        relation == other.relation &&
-        projections == other.projections
-    end
-
     def eval
       unoperated_rows.collect { |r| r.slice(*projections) }
     end