[#8743] Test case

- Reverting #a3cf03ef fixes the issue

Conflicts:
	activerecord/test/cases/relations_test.rb

activerecord/test/cases/relations_test.rb

@@ -745,6 +745,11 @@ def test_relation_merging_with_association
     end
   end
 
+  def test_relation_to_sql
+    sql = Post.first.comments.to_sql
+    assert_no_match(/\?/, sql)
+  end
+
   def test_count
     posts = Post.all