Rails 3 LIKE query raises exception when using a double colon and a dot

In rails 3.0.0, the following query works fine: Author.where("name LIKE :input",{:input => "#{params[:q]}%"}).includes(:books).order('created_at') However, when I input as search string (so containing a double colon followed by a dot): aa:.bb I get the following exception: ActiveRecord::StatementInvalid: SQLite3::SQLException: ambiguous column name: created_at In the logs the these are the sql que