1 files changed, 21 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb
index f69b85af66..f88493df8a 100644
--- a/activerecord/lib/active_record/relation/query_methods.rb
+++ b/activerecord/lib/active_record/relation/query_methods.rb
@@ -240,6 +240,27 @@ module ActiveRecord
       self
     end
 
+    # Allows you to change a previously set select statement.
+    #
+    #   Post.select(:title, :body)
+    #   # SELECT `posts.title`, `posts.body` FROM `posts`
+    #
+    #   Post.select(:title, :body).reselect(:created_at)
+    #   # SELECT `posts.created_at` FROM `posts`
+    #
+    # This is short-hand for <tt>unscope(:select).select(fields)</tt>.
+    # Note that we're unscoping the entire select statement.
+    def reselect(*args)
+      check_if_method_has_arguments!(:reselect, args)
+      spawn.reselect!(*args)
+    end
+
+    # Same as #reselect but operates on relation in-place instead of copying.
+    def reselect!(*args) # :nodoc:
+      self.select_values = args
+      self
+    end
+
     # Allows to specify a group attribute:
     #
     #   User.group(:name)