…_values" This reverts commit 06cc38a.
…itor for generating SQL. This improves the code architecture generally, and solves some problems with marshalling. Adapter authors please take note: you now need to define an Adapter.visitor_for method, but it degrades gracefully with a deprecation warning for now.
…d in database_statements otherwise when using external ActiveRecord adapters (e.g. Oracle) database_statements might be loaded before active_support/core_ext/module/deprecation which results in NoMethodError (commit 60cf65d added "deprecate" call to database_statements.rb)