博学谷智能机器人软件开发

   browse_second_num,      count(browse_second_num) launch_num,      case          when browse_second_num <![CDATA[ < ]]> 10 then '&lt;10秒'          when browse_second_num <![CDATA[ >= ]]> 10 and browse_second_num <![CDATA[ <= ]]> 30 then '10秒-30秒'          when browse_second_num <![CDATA[ >= ]]> 31 and browse_second_num <![CDATA[ <= ]]> 60 then '31秒-2分'          else '>2分'      end browse_second_type