push up `select` exclusion

activerecord/lib/active_record/relation.rb

@@ -508,7 +508,8 @@ def to_sql
 
                     if eager_loading?
                       join_dependency = construct_join_dependency
-                      relation        = construct_relation_for_association_find(join_dependency)
+                      relation        = except :select
+                      relation        = construct_relation_for_association_find(join_dependency, relation)
                     end
 
                     ast   = relation.arel.ast

activerecord/lib/active_record/relation/finder_methods.rb

@@ -242,7 +242,8 @@ def raise_record_not_found_exception!(ids, result_size, expected_size) #:nodoc:
 
     def find_with_associations
       join_dependency = construct_join_dependency
-      relation = construct_relation_for_association_find(join_dependency)
+      relation = except :select
+      relation = construct_relation_for_association_find(join_dependency, relation)
       if ActiveRecord::NullRelation === relation
         []
       else
@@ -260,8 +261,8 @@ def construct_relation_for_association_calculations
       apply_join_dependency(self, construct_join_dependency(arel.froms.first))
     end
 
-    def construct_relation_for_association_find(join_dependency)
-      relation = except(:select).select(join_dependency.columns)
+    def construct_relation_for_association_find(join_dependency, relation = self)
+      relation = relation.select(join_dependency.columns)
       apply_join_dependency(relation, join_dependency)
     end