build_read_query_regexp

# File activerecord/lib/active_record/connection_adapters/abstract_adapter.rb, line 68
      def self.build_read_query_regexp(*parts) # :nodoc:
        parts += DEFAULT_READ_QUERY
        parts = parts.map { |part| /#{part}/ }
        /\A(?:[\(\s]|#{COMMENT_REGEX})*#{Regexp.union(*parts)}/
      end