rsim/oracle-enhanced — pull request #520 by yahonda (2014-11-20 13:45:35+00:00)
Title: Remove substitute_at method from Oracle enhanced adapter

Now Arel takes care of it.
Refer https://github.com/rails/rails/commit/c01b20b658c9fe4b7d54f4a227a09cb090b5763d

Because of bind variable naming differences another pull request will be opened to rails/arel.