oracle 开窗函数使用,merge

select cast(last_operate_tm as timestamp) query_time,
               plate_num,
               container_no,
               waybill_no,
               operate_zone_code,
               waybill_route_status,
               operate_batch_code,
               lostime,
               warntime,
               zone_code,
               high_worth,
               countnum,
               exception_node,
               appreciation_service_type,
               cast(doubt_miss_tm as timestamp) doubt_miss_tm
          from (select count(*) over(partition by nvl(nvl2(plate_num, plate_num, container_no), dbms_random.value), zone_code, to_char(doubt_miss_tm, 'yyyy-MM-dd hh24:mi') order by nvl2(plate_num, plate_num, container_no), zone_code, to_char(doubt_miss_tm, 'yyyy-MM-dd hh24:mi')) countnum,
                       row_number() over(partition by nvl(nvl2(plate_num, plate_num, container_no), dbms_random.value), zone_code, to_char(doubt_miss_tm, 'yyyy-MM-dd hh24:mi') order by nvl2(plate_num, plate_num, container_no), zone_code, to_char(doubt_miss_tm, 'yyyy-MM-dd hh24:mi')) rw,
                       last_operate_tm,
                       plate_num,
                       container_no,
                       waybill_no,
                       operate_zone_code,
                       waybill_route_status,
                       operate_batch_code,
                       round(to_number(sysdate - last_operate_tm) * 1440) as lostime,
                       round(to_number(sysdate - doubt_miss_tm) * 1440) as warntime,
                       zone_code,
                       high_worth,
                       exception_node,
                       appreciation_service_type,
                       doubt_miss_tm
                  from tt_doubt_miss m, tm_department t
                 where m.zone_code = t.dept_code
                   and t.dist_code in ('755')) A
         WHERE countnum = RW
         ORDER BY LAST_OPERATE_TM ASC


1.like 查询
select * from book b where b.name like '%\_%' escape '\';
2.反索引函数
select * from book b where reverse(b.name) like reverse('%02');
3.rollup 函数

MERGE INTO TT_UNIQUE_TCMSEXP TA
    USING (SELECT *
             FROM (SELECT A.*,
                          ROW_NUMBER() OVER(PARTITION BY A.AEMS_EXP_ID ORDER BY A.TCMS_CREAT_TM DESC) RN
                     FROM TT_CONVEYANCE_EXP A
                    WHERE A.CREATE_TM >= V_EXP_SYNCTM
                      AND A.CREATE_TM <= V_SYSTM + 1 / (24 * 60))
            WHERE RN = 1) TB
    ON (TA.AEMS_EXP_ID = TB.AEMS_EXP_ID)
    WHEN MATCHED THEN
      UPDATE
         SET TA.DEPART_TYPE  = TB.DEPART_TYPE,
             TA.VEHICLE_CODE = TB.VEHICLE_CODE,
             TA.EXP_TYPE     = TB.EXP_TYPE,
             TA.EXP_DESC     = TB.EXP_DESC,
             TA.EXP_RESULT   = TB.EXP_RESULT,
             TA.EXP_REMARK   = TB.EXP_REMARK,
             TA.AGENT_NAME   = TB.AGENT_NAME,
             TA.MODIFY_TM    = V_SYSTM
    WHEN NOT MATCHED THEN
      INSERT
        (AEMS_EXP_ID,
         DEPART_TYPE,
         VEHICLE_CODE,
         LINE_CODE,
         CONVEYANCE_NAME,
         SEND_BILL_ID,
         EXP_TYPE,
         EXP_DESC,
         EXP_RESULT,
         EXCEPTION_CODE,
         EXP_REMARK,
         EXP_SOURCE,
         CREATE_TM,
         MODIFY_TM,
         AGENT_NAME,
         IS_SPECIAL,
         SEND_DT,
         TCMS_CREAT_TM)
      VALUES
        (TB.AEMS_EXP_ID,
         TB.DEPART_TYPE,
         TB.VEHICLE_CODE,
         TB.LINE_CODE,
         TB.CONVEYANCE_NAME,
         TB.SEND_BILL_ID,
         TB.EXP_TYPE,
         TB.EXP_DESC,
         TB.EXP_RESULT,
         DECODE(TB.EXP_RESULT,
                '航班取消',
                '1',
                '航班拉货',
                '2',
                '火车取消',
                '3',
                '火车拉货',
                '4',
                '5'),
         TB.EXP_REMARK,
         TB.EXP_SOURCE,
         V_SYSTM,
         V_SYSTM,
         TB.AGENT_NAME,
         TB.IS_SPECIAL,
         TB.SEND_DT,
         TB.TCMS_CREAT_TM);