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-rw-r--r--activerecord/lib/active_record/associations/preloader.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/associations/preloader.rb b/activerecord/lib/active_record/associations/preloader.rb
index fafed94ff2..54705e4950 100644
--- a/activerecord/lib/active_record/associations/preloader.rb
+++ b/activerecord/lib/active_record/associations/preloader.rb
@@ -12,7 +12,7 @@ module ActiveRecord
# and all of its books via a single query:
#
# SELECT * FROM authors
- # LEFT OUTER JOIN books ON authors.id = books.id
+ # LEFT OUTER JOIN books ON authors.id = books.author_id
# WHERE authors.name = 'Ken Akamatsu'
#
# However, this could result in many rows that contain redundant data. After