check_rc (DB2::DB2Util)

    # File lib/active_record/vendor/db2.rb, line 10
        def check_rc(rc)
          if ![SQL_SUCCESS, SQL_SUCCESS_WITH_INFO, SQL_NO_DATA_FOUND].include?(rc)
            rec = 1
            msg = ''
            loop do
              a = SQLGetDiagRec(@handle_type, @handle, rec, 500)
              break if a[0] != SQL_SUCCESS
              msg << a[3] if !a[3].nil? and a[3] != '' # Create message.
              rec += 1
            end
            raise "DB2 error: #{msg}"
          end
        end