Add ActiveRecord::Result#first

When you only need the first element of a result set, you shouldn't need to
instantiate all of hash_rows.

1 files changed, 5 insertions, 0 deletions

diff --git a/activerecord/lib/active_record/result.rb b/activerecord/lib/active_record/result.rb
index 8e6cd6c82f..f45f664efe 100644
--- a/activerecord/lib/active_record/result.rb
+++ b/activerecord/lib/active_record/result.rb
@@ -75,6 +75,11 @@ module ActiveRecord
       hash_rows[idx]
     end
 
+    def first
+      return nil if @rows.empty?
+      Hash[@columns.zip(@rows.first)]
+    end
+
     def last
       hash_rows.last
     end