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-rw-r--r--activerecord/lib/active_record/association_preload.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/association_preload.rb b/activerecord/lib/active_record/association_preload.rb
index 5aad2b4558..dc15b2f4c3 100644
--- a/activerecord/lib/active_record/association_preload.rb
+++ b/activerecord/lib/active_record/association_preload.rb
@@ -415,7 +415,7 @@ module ActiveRecord
in_clause_length = connection.in_clause_length || ids.size
records = []
ids.each_slice(in_clause_length) do |some_ids|
- records += yield(some_ids)
+ records.concat yield(some_ids)
end
records
end