OceanBase金融SQL、億萬級別據量最佳化案例(Row_number 開窗 + 分頁SQL)

小至尖尖發表於2023-11-07

最近最佳化了不少SQL,簡單的SQL順手搞了不好意思發出來了忽悠人,複雜很考驗邏輯思維的,但是又不想分享出來(自己收藏的案例),怕被人抄襲思路?

今天遇到一條很有意思的SQL案例:

 效能SQL(金融行業關鍵資訊已經隱藏):

SELECT CS.BRANCHCODE,
       (SELECT DISTINCT UM.UNITCODE
        FROM IFUNITMAPPING UM
        WHERE UM.FGS = CS.BRANCHCODE
          AND UM.DEPTCODE = CS.DEPTCODE
          AND UM.CURRENCYCODE = CS.PAYCURRENCY
          AND UM.IFVALID = '1')             AS UNITCODE,
       CS.SECTIONCODE,
       CS.PRODUCTGRPCODE,
       CS.HANDLERCODE,
       (SELECT DISTINCT(NAME)
        FROM IFEMPLOYEE EE
        WHERE EE.CODE = CS.HANDLERCODE
          AND EE.UNIT_CODE = CS.BRANCHCODE) AS HANDLERNAME,
       CS.POLICYNO,
       CS.ENDORSENO,
       CS.SIGNPREMIUM,
       CS.SIGNDATE,
       CS.STARTDATE,
       CS.COMMISSIONTYPE,
       CS.PAYCURRENCY,
       CS.AGENTCODE,
       B.OPERATOR,
       A.OLDCOMMISSION,
       A.OLDCOMMISSIONRATE,
       B.COMMISSION,
       B.COMMISSIONRATE,
       B.UPDATEDATE
FROM CSSCS CS,
     (SELECT AA.NUM,
             AA.OLDCOMMISSIONRATE,
             AA.OLDCOMMISSION,
             AA.COMMITSSSSS
      FROM (SELECT ROW_NUMBER() OVER (
          PARTITION BY T2.COMMITSSSSS
          ORDER BY
              T1.UPDATEDATE ASC
          )                               AS NUM,
                   T2.OLDCOMMISSIONRATE   AS OLDCOMMISSIONRATE,
                   T2.OLDCOMMISSION       AS OLDCOMMISSION,
                   T2.COMMITSSSSS AS COMMITSSSSS,
                   T1.OPERFLAG            AS OPERFLAG
            FROM  T111 T1,
                   T222 T2
            WHERE 1 = 1
              AND T2.SUBCOMPANY = '5010100'
              AND T1.UNIQUECODE LIKE '5010100%'
              AND T2.COMMISSIONTYPE = '0'
              AND T1.RATECHANGENO = T2.RATECHANGENO
              AND T1.STATUS = '1') AA
      WHERE AA.NUM = 1) A,
     (SELECT BB.NUM,
             BB.OPERATOR,
             BB.UPDATEDATE,
             BB.COMMISSIONRATE,
             BB.COMMISSION,
             BB.COMMITSSSSS,
             BB.OPERFLAG
      FROM (SELECT ROW_NUMBER() OVER (
          PARTITION BY T2.COMMITSSSSS
          ORDER BY
              T1.UPDATEDATE DESC
          )                               AS NUM,
                   T1.OPERATOR            AS OPERATOR,
                   T1.UPDATEDATE          AS UPDATEDATE,
                   T2.COMMISSIONRATE      AS COMMISSIONRATE,
                   T2.COMMISSION          AS COMMISSION,
                   T2.COMMITSSSSS AS COMMITSSSSS,
                   T1.OPERFLAG            AS OPERFLAG
            FROM  T111 T1,
                   T222 T2
            WHERE 1 = 1
              AND T2.SUBCOMPANY = '5010100'
              AND T1.UNIQUECODE LIKE '5010100%'
              AND T2.UPDATEDATE >= TO_DATE('2021-08-01 00:00:00', 'YYYY-MM-DD HH24:MI:SS')
              AND T2.UPDATEDATE < TO_DATE('2021-09-01 00:00:00', 'YYYY-MM-DD HH24:MI:SS')
              AND (
                    T1.OPERFLAG IS NULL
                    OR T1.OPERFLAG = '0'
                )
              AND T2.COMMISSIONTYPE = '0'
              AND T1.RATECHANGENO = T2.RATECHANGENO
              AND T1.STATUS = '1') BB
      WHERE BB.NUM = 1) B
WHERE A.COMMITSSSSS = B.COMMITSSSSS
  AND A.COMMITSSSSS = CS.COMMITSSSSS
  AND CS.BRANCHCODE = '5010100'
  AND CS.PAYCURRENCY = '01'
  AND ROWNUM <= 5000
ORDER BY B.UPDATEDATE;
執行時間:155 s

執行計劃:

================================================================================
|ID|OPERATOR                    |NAME                        |EST. ROWS|COST   |
--------------------------------------------------------------------------------
|0 |SUBPLAN FILTER              |                            |1        |1097660|
|1 | SORT                       |                            |1        |1097485|
|2 |  SUBPLAN SCAN              |VIEW1                       |1        |1097485|
|3 |   LIMIT                    |                            |1        |1097485|
|4 |    NESTED-LOOP JOIN        |                            |1        |1097485|
|5 |     NESTED-LOOP JOIN       |                            |1        |1097456|
|6 |      SUBPLAN SCAN          |BB                          |1        |1097317|
|7 |       WINDOW FUNCTION      |                            |14332    |1096799|
|8 |        SORT                |                            |14332    |1089188|
|9 |         HASH JOIN          |                            |14332    |1051984|
|10|          TABLE SCAN        |T2(IND_T222_5)              |14332    |650849 |
|11|          TABLE SCAN        |T1(IND_T111_2)              |32610    |376637 |
|12|      SUBPLAN SCAN          |AA                          |1        |139    |
|13|       WINDOW FUNCTION      |                            |1        |139    |
|14|        SORT                |                            |1        |138    |
|15|         NESTED-LOOP JOIN   |                            |1        |138    |
|16|          TABLE SCAN        |T2(IND_  T222_3)            |1        |137    |
|17|          TABLE GET         |T1                          |1        |28     |
|18|     TABLE LOOKUP           |CS                          |1        |28     |
|19|      DISTRIBUTED TABLE SCAN|CS(PK_CSSCS)                |1        |5      |
|20| MERGE DISTINCT             |                            |1        |92     |
|21|  SORT                      |                            |1        |92     |
|22|   TABLE SCAN               |UM(IND_IFUNITMAPPING)       |1        |92     |
|23| MERGE DISTINCT             |                            |1        |92     |
|24|  SORT                      |                            |1        |92     |
|25|   TABLE SCAN               |EE(IND_IFEMPLOYEE_5)        |1        |92     |
================================================================================

Outputs & filters: 
-------------------------------------
  0 - output([VIEW1.CS.BRANCHCODE(0x7ea69ce2d3b0)], [subquery(1)(0x7f1a39329e20)], [VIEW1.CS.SECTIONCODE(0x7ea69ce2e550)], [VIEW1.CS.PRODUCTGRPCODE(0x7ea69ce2e840)], [VIEW1.CS.HANDLERCODE(0x7ea69ce2eb30)], [subquery(2)(0x7ea69cd5a570)], [VIEW1.CS.POLICYNO(0x7ea69ce2ee20)], [VIEW1.CS.ENDORSENO(0x7ea69ce2f110)], [VIEW1.CS.SIGNPREMIUM(0x7ea69ce2f400)], [VIEW1.CS.SIGNDATE(0x7ea69ce2f6f0)], [VIEW1.CS.STARTDATE(0x7ea69ce2f9e0)], [VIEW1.CS.COMMISSIONTYPE(0x7ea69ce2fcd0)], [VIEW1.CS.PAYCURRENCY(0x7ea69ce2df70)], [VIEW1.CS.AGENTCODE(0x7ea69ce2ffc0)], [VIEW1.B.OPERATOR(0x7ea69ce302b0)], [VIEW1.A.OLDCOMMISSION(0x7ea69ce305a0)], [VIEW1.A.OLDCOMMISSIONRATE(0x7ea69ce30890)], [VIEW1.B.COMMISSION(0x7ea69ce30b80)], [VIEW1.B.COMMISSIONRATE(0x7ea69ce30e70)], [VIEW1.B.UPDATEDATE(0x7ea69ce31160)]), filter(nil), 
      exec_params_([VIEW1.CS.BRANCHCODE(0x7ea69ce2d3b0)], [VIEW1.CS.DEPTCODE(0x7ea69ce2e260)], [VIEW1.CS.PAYCURRENCY(0x7ea69ce2df70)], [VIEW1.CS.HANDLERCODE(0x7ea69ce2eb30)], [VIEW1.CS.BRANCHCODE(0x7ea69ce2d3b0)]), onetime_exprs_(nil), init_plan_idxs_(nil)
  1 - output([VIEW1.CS.BRANCHCODE(0x7ea69ce2d3b0)], [VIEW1.CS.SECTIONCODE(0x7ea69ce2e550)], [VIEW1.CS.PRODUCTGRPCODE(0x7ea69ce2e840)], [VIEW1.CS.HANDLERCODE(0x7ea69ce2eb30)], [VIEW1.CS.POLICYNO(0x7ea69ce2ee20)], [VIEW1.CS.ENDORSENO(0x7ea69ce2f110)], [VIEW1.CS.SIGNPREMIUM(0x7ea69ce2f400)], [VIEW1.CS.SIGNDATE(0x7ea69ce2f6f0)], [VIEW1.CS.STARTDATE(0x7ea69ce2f9e0)], [VIEW1.CS.COMMISSIONTYPE(0x7ea69ce2fcd0)], [VIEW1.CS.PAYCURRENCY(0x7ea69ce2df70)], [VIEW1.CS.AGENTCODE(0x7ea69ce2ffc0)], [VIEW1.B.OPERATOR(0x7ea69ce302b0)], [VIEW1.A.OLDCOMMISSION(0x7ea69ce305a0)], [VIEW1.A.OLDCOMMISSIONRATE(0x7ea69ce30890)], [VIEW1.B.COMMISSION(0x7ea69ce30b80)], [VIEW1.B.COMMISSIONRATE(0x7ea69ce30e70)], [VIEW1.B.UPDATEDATE(0x7ea69ce31160)], [VIEW1.CS.DEPTCODE(0x7ea69ce2e260)]), filter(nil), sort_keys([VIEW1.B.UPDATEDATE(0x7ea69ce31160), ASC])
  2 - output([VIEW1.CS.BRANCHCODE(0x7ea69ce2d3b0)], [VIEW1.CS.PAYCURRENCY(0x7ea69ce2df70)], [VIEW1.CS.DEPTCODE(0x7ea69ce2e260)], [VIEW1.CS.SECTIONCODE(0x7ea69ce2e550)], [VIEW1.CS.PRODUCTGRPCODE(0x7ea69ce2e840)], [VIEW1.CS.HANDLERCODE(0x7ea69ce2eb30)], [VIEW1.CS.POLICYNO(0x7ea69ce2ee20)], [VIEW1.CS.ENDORSENO(0x7ea69ce2f110)], [VIEW1.CS.SIGNPREMIUM(0x7ea69ce2f400)], [VIEW1.CS.SIGNDATE(0x7ea69ce2f6f0)], [VIEW1.CS.STARTDATE(0x7ea69ce2f9e0)], [VIEW1.CS.COMMISSIONTYPE(0x7ea69ce2fcd0)], [VIEW1.CS.AGENTCODE(0x7ea69ce2ffc0)], [VIEW1.B.OPERATOR(0x7ea69ce302b0)], [VIEW1.A.OLDCOMMISSION(0x7ea69ce305a0)], [VIEW1.A.OLDCOMMISSIONRATE(0x7ea69ce30890)], [VIEW1.B.COMMISSION(0x7ea69ce30b80)], [VIEW1.B.COMMISSIONRATE(0x7ea69ce30e70)], [VIEW1.B.UPDATEDATE(0x7ea69ce31160)]), filter(nil), 
      access([VIEW1.CS.BRANCHCODE(0x7ea69ce2d3b0)], [VIEW1.CS.PAYCURRENCY(0x7ea69ce2df70)], [VIEW1.CS.DEPTCODE(0x7ea69ce2e260)], [VIEW1.CS.SECTIONCODE(0x7ea69ce2e550)], [VIEW1.CS.PRODUCTGRPCODE(0x7ea69ce2e840)], [VIEW1.CS.HANDLERCODE(0x7ea69ce2eb30)], [VIEW1.CS.POLICYNO(0x7ea69ce2ee20)], [VIEW1.CS.ENDORSENO(0x7ea69ce2f110)], [VIEW1.CS.SIGNPREMIUM(0x7ea69ce2f400)], [VIEW1.CS.SIGNDATE(0x7ea69ce2f6f0)], [VIEW1.CS.STARTDATE(0x7ea69ce2f9e0)], [VIEW1.CS.COMMISSIONTYPE(0x7ea69ce2fcd0)], [VIEW1.CS.AGENTCODE(0x7ea69ce2ffc0)], [VIEW1.B.OPERATOR(0x7ea69ce302b0)], [VIEW1.A.OLDCOMMISSION(0x7ea69ce305a0)], [VIEW1.A.OLDCOMMISSIONRATE(0x7ea69ce30890)], [VIEW1.B.COMMISSION(0x7ea69ce30b80)], [VIEW1.B.COMMISSIONRATE(0x7ea69ce30e70)], [VIEW1.B.UPDATEDATE(0x7ea69ce31160)])
  3 - output([CS.BRANCHCODE(0x7e6038e53d20)], [CS.PAYCURRENCY(0x7e6038e54300)], [CS.DEPTCODE(0x7e6038e545f0)], [CS.SECTIONCODE(0x7e6038e548e0)], [CS.PRODUCTGRPCODE(0x7e6038e54bd0)], [CS.HANDLERCODE(0x7e6038e54ec0)], [CS.POLICYNO(0x7e6038e551b0)], [CS.ENDORSENO(0x7e6038e554a0)], [CS.SIGNPREMIUM(0x7e6038e55790)], [CS.SIGNDATE(0x7e6038e55a80)], [CS.STARTDATE(0x7e6038e55d70)], [CS.COMMISSIONTYPE(0x7e6038e56060)], [CS.AGENTCODE(0x7e6038e56350)], [BB.OPERATOR(0x7e6038e59500)], [AA.OLDCOMMISSION(0x7e6038e56c20)], [AA.OLDCOMMISSIONRATE(0x7e6038e56930)], [BB.COMMISSION(0x7e6038e59dd0)], [BB.COMMISSIONRATE(0x7e6038e59ae0)], [BB.UPDATEDATE(0x7e6038e597f0)]), filter(nil), limit(?), offset(nil)
  4 - output([CS.BRANCHCODE(0x7e6038e53d20)], [CS.PAYCURRENCY(0x7e6038e54300)], [CS.DEPTCODE(0x7e6038e545f0)], [CS.SECTIONCODE(0x7e6038e548e0)], [CS.PRODUCTGRPCODE(0x7e6038e54bd0)], [CS.HANDLERCODE(0x7e6038e54ec0)], [CS.POLICYNO(0x7e6038e551b0)], [CS.ENDORSENO(0x7e6038e554a0)], [CS.SIGNPREMIUM(0x7e6038e55790)], [CS.SIGNDATE(0x7e6038e55a80)], [CS.STARTDATE(0x7e6038e55d70)], [CS.COMMISSIONTYPE(0x7e6038e56060)], [CS.AGENTCODE(0x7e6038e56350)], [BB.OPERATOR(0x7e6038e59500)], [AA.OLDCOMMISSION(0x7e6038e56c20)], [AA.OLDCOMMISSIONRATE(0x7e6038e56930)], [BB.COMMISSION(0x7e6038e59dd0)], [BB.COMMISSIONRATE(0x7e6038e59ae0)], [BB.UPDATEDATE(0x7e6038e597f0)]), filter(nil), 
      conds(nil), nl_params_([AA.COMMITSSSSS(0x7e6038e58f20)]), batch_join=true
  5 - output([BB.OPERATOR(0x7e6038e59500)], [AA.OLDCOMMISSION(0x7e6038e56c20)], [AA.OLDCOMMISSIONRATE(0x7e6038e56930)], [BB.COMMISSION(0x7e6038e59dd0)], [BB.COMMISSIONRATE(0x7e6038e59ae0)], [BB.UPDATEDATE(0x7e6038e597f0)], [AA.COMMITSSSSS(0x7e6038e58f20)]), filter(nil), 
      conds(nil), nl_params_([BB.COMMITSSSSS(0x7e6038e5a0c0)]), batch_join=false
  6 - output([BB.OPERATOR(0x7e6038e59500)], [BB.UPDATEDATE(0x7e6038e597f0)], [BB.COMMISSIONRATE(0x7e6038e59ae0)], [BB.COMMISSION(0x7e6038e59dd0)], [BB.COMMITSSSSS(0x7e6038e5a0c0)]), filter([BB.NUM(0x7e6038e59210) = 1(0x7e6038e5bf60)]), 
      access([BB.NUM(0x7e6038e59210)], [BB.OPERATOR(0x7e6038e59500)], [BB.UPDATEDATE(0x7e6038e597f0)], [BB.COMMISSIONRATE(0x7e6038e59ae0)], [BB.COMMISSION(0x7e6038e59dd0)], [BB.COMMITSSSSS(0x7e6038e5a0c0)])
  7 - output([T_WIN_FUN_ROW_NUMBER()(0x7e8a68c83950)], [T1.OPERATOR(0x7e8a68c7d500)], [T1.UPDATEDATE(0x7e8a68c7d210)], [T2.COMMISSIONRATE(0x7e8a68c7d7f0)], [T2.COMMISSION(0x7e8a68c7dae0)], [T2.COMMITSSSSS(0x7e8a68c7cf20)]), filter(nil), 
      win_expr(T_WIN_FUN_ROW_NUMBER()(0x7e8a68c83950)), partition_by([T2.COMMITSSSSS(0x7e8a68c7cf20)]), order_by([T1.UPDATEDATE(0x7e8a68c7d210), DESC]), window_type(RANGE), upper(UNBOUNDED PRECEDING), lower(UNBOUNDED FOLLOWING)
  8 - output([T2.COMMITSSSSS(0x7e8a68c7cf20)], [T1.UPDATEDATE(0x7e8a68c7d210)], [T1.OPERATOR(0x7e8a68c7d500)], [T2.COMMISSIONRATE(0x7e8a68c7d7f0)], [T2.COMMISSION(0x7e8a68c7dae0)]), filter(nil), sort_keys([T2.COMMITSSSSS(0x7e8a68c7cf20), ASC], [T1.UPDATEDATE(0x7e8a68c7d210), DESC])
  9 - output([T2.COMMITSSSSS(0x7e8a68c7cf20)], [T1.UPDATEDATE(0x7e8a68c7d210)], [T1.OPERATOR(0x7e8a68c7d500)], [T2.COMMISSIONRATE(0x7e8a68c7d7f0)], [T2.COMMISSION(0x7e8a68c7dae0)]), filter(nil), 
      equal_conds([T1.RATECHANGENO(0x7e8a68c7c650) = T2.RATECHANGENO(0x7e8a68c7c940)(0x7e8a68c807b0)]), other_conds(nil)
  10 - output([T2.RATECHANGENO(0x7e8a68c7c940)], [T2.COMMITSSSSS(0x7e8a68c7cf20)], [T2.COMMISSIONRATE(0x7e8a68c7d7f0)], [T2.COMMISSION(0x7e8a68c7dae0)]), filter([T2.SUBCOMPANY(0x7e8a68c7b7a0) = ?(0x7e8a68c7ddd0)], [T2.COMMISSIONTYPE(0x7e8a68c7c360) = ?(0x7e8a68c7e630)]), 
      access([T2.SUBCOMPANY(0x7e8a68c7b7a0)], [T2.COMMISSIONTYPE(0x7e8a68c7c360)], [T2.RATECHANGENO(0x7e8a68c7c940)], [T2.COMMITSSSSS(0x7e8a68c7cf20)], [T2.COMMISSIONRATE(0x7e8a68c7d7f0)], [T2.COMMISSION(0x7e8a68c7dae0)]), partitions(p0), 
      is_index_back=true, filter_before_indexback[false,false], 
      range_key([T2.UPDATEDATE(0x7e8a68c7bd80)], [T2.RATECHANGEDETAILNO(0x7e8a68cc91c0)]), range(2021-08-01 00:00:00,MIN ; 2021-09-01 00:00:00,MIN), 
      range_cond([T2.UPDATEDATE(0x7e8a68c7bd80) >= ?(0x7e8a68c7f6f0)], [T2.UPDATEDATE(0x7e8a68c7bd80) < ?(0x7e8a68c7ff50)])
  11 - output([T1.RATECHANGENO(0x7e8a68c7c650)], [T1.UPDATEDATE(0x7e8a68c7d210)], [T1.OPERATOR(0x7e8a68c7d500)]), filter([T1.STATUS(0x7e8a68c7cc30) = ?(0x7e8a68c7ee90)], [(T_OP_IS, T1.OPERFLAG(0x7e8a68c7c070), NULL, 0)(0x7e8a68c82360) OR T1.OPERFLAG(0x7e8a68c7c070) = ?(0x7e8a68c830f0)(0x7e8a68c81b10)]), 
      access([T1.OPERFLAG(0x7e8a68c7c070)], [T1.RATECHANGENO(0x7e8a68c7c650)], [T1.STATUS(0x7e8a68c7cc30)], [T1.UPDATEDATE(0x7e8a68c7d210)], [T1.OPERATOR(0x7e8a68c7d500)]), partitions(p0), 
      is_index_back=true, filter_before_indexback[true,false], 
      range_key([T1.UNIQUECODE(0x7e8a68c7ba90)], [T1.STATUS(0x7e8a68c7cc30)], [T1.UPDATEDATE(0x7e8a68c7d210)], [T1.RATECHANGENO(0x7e8a68c7c650)]), range(5010100,1,MIN,MIN ; 5010100,1,MAX,MAX), 
      range_cond([(T_OP_LIKE, T1.UNIQUECODE(0x7e8a68c7ba90), ?, '\')(0x7e8a68c81010)])
  12 - output([AA.OLDCOMMISSIONRATE(0x7e6038e56930)], [AA.OLDCOMMISSION(0x7e6038e56c20)], [AA.COMMITSSSSS(0x7e6038e58f20)]), filter([AA.NUM(0x7e6038e56640) = 1(0x7ed75e458270)]), 
      access([AA.NUM(0x7e6038e56640)], [AA.OLDCOMMISSIONRATE(0x7e6038e56930)], [AA.OLDCOMMISSION(0x7e6038e56c20)], [AA.COMMITSSSSS(0x7e6038e58f20)])
  13 - output([T_WIN_FUN_ROW_NUMBER()(0x7ed75e4a1850)], [T2.OLDCOMMISSIONRATE(0x7ed75e49e5f0)], [T2.OLDCOMMISSION(0x7ed75e49e8e0)], [T2.COMMITSSSSS(0x7ed75e49e010)]), filter(nil), 
      win_expr(T_WIN_FUN_ROW_NUMBER()(0x7ed75e4a1850)), partition_by([T2.COMMITSSSSS(0x7ed75e49e010)]), order_by([T1.UPDATEDATE(0x7ed75e49e300), ASC]), window_type(RANGE), upper(UNBOUNDED PRECEDING), lower(UNBOUNDED FOLLOWING)
  14 - output([T2.COMMITSSSSS(0x7ed75e49e010)], [T1.UPDATEDATE(0x7ed75e49e300)], [T2.OLDCOMMISSIONRATE(0x7ed75e49e5f0)], [T2.OLDCOMMISSION(0x7ed75e49e8e0)]), filter(nil), sort_keys([T1.UPDATEDATE(0x7ed75e49e300), ASC])
  15 - output([T2.COMMITSSSSS(0x7ed75e49e010)], [T1.UPDATEDATE(0x7ed75e49e300)], [T2.OLDCOMMISSIONRATE(0x7ed75e49e5f0)], [T2.OLDCOMMISSION(0x7ed75e49e8e0)]), filter(nil), 
      conds(nil), nl_params_([T2.RATECHANGENO(0x7ed75e49da30)]), batch_join=true
  16 - output([T2.RATECHANGENO(0x7ed75e49da30)], [T2.COMMITSSSSS(0x7ed75e49e010)], [T2.OLDCOMMISSIONRATE(0x7ed75e49e5f0)], [T2.OLDCOMMISSION(0x7ed75e49e8e0)]), filter([T2.SUBCOMPANY(0x7ed75e49ce70) = ?(0x7ed75e49ebd0)], [T2.COMMISSIONTYPE(0x7ed75e49d450) = ?(0x7ed75e49f430)]), 
      access([T2.SUBCOMPANY(0x7ed75e49ce70)], [T2.COMMISSIONTYPE(0x7ed75e49d450)], [T2.RATECHANGENO(0x7ed75e49da30)], [T2.COMMITSSSSS(0x7ed75e49e010)], [T2.OLDCOMMISSIONRATE(0x7ed75e49e5f0)], [T2.OLDCOMMISSION(0x7ed75e49e8e0)]), partitions(p0), 
      is_index_back=true, filter_before_indexback[false,false], 
      range_key([T2.COMMITSSSSS(0x7ed75e49e010)], [T2.RATECHANGEDETAILNO(0x7edde8d36330)]), range(MIN,MIN ; MAX,MAX)always true, 
      range_cond([T2.COMMITSSSSS(0x7ed75e49e010) = ?(0x7ed75e4a9cd0)])
  17 - output([T1.UPDATEDATE(0x7ed75e49e300)]), filter([(T_OP_LIKE, T1.UNIQUECODE(0x7ed75e49d160), ?, '\')(0x7ed75e4a0d50)], [T1.STATUS(0x7ed75e49dd20) = ?(0x7ed75e49fc90)]), 
      access([T1.UNIQUECODE(0x7ed75e49d160)], [T1.STATUS(0x7ed75e49dd20)], [T1.UPDATEDATE(0x7ed75e49e300)]), partitions(p0), 
      is_index_back=false, filter_before_indexback[false,false], 
      range_key([T1.RATECHANGENO(0x7ed75e49d740)]), range(MIN ; MAX), 
      range_cond([T1.RATECHANGENO(0x7ed75e49d740) = ?(0x7edde8d7c390)])
  18 - output([CS.BRANCHCODE(0x7e6038e53d20)], [CS.PAYCURRENCY(0x7e6038e54300)], [CS.DEPTCODE(0x7e6038e545f0)], [CS.SECTIONCODE(0x7e6038e548e0)], [CS.PRODUCTGRPCODE(0x7e6038e54bd0)], [CS.HANDLERCODE(0x7e6038e54ec0)], [CS.POLICYNO(0x7e6038e551b0)], [CS.ENDORSENO(0x7e6038e554a0)], [CS.SIGNPREMIUM(0x7e6038e55790)], [CS.SIGNDATE(0x7e6038e55a80)], [CS.STARTDATE(0x7e6038e55d70)], [CS.COMMISSIONTYPE(0x7e6038e56060)], [CS.AGENTCODE(0x7e6038e56350)]), filter([CS.PAYCURRENCY(0x7e6038e54300) = ?(0x7e6038e5d2b0)]), 
      partitions(p27)
  19 - output([CS.BRANCHCODE(0x7e6038e53d20)], [CS.__pk_increment(0x7e6038ea5e30)]), filter([CS.BRANCHCODE(0x7e6038e53d20) = ?(0x7e6038e5ca50)]), 
      access([CS.BRANCHCODE(0x7e6038e53d20)], [CS.__pk_increment(0x7e6038ea5e30)]), partitions(p0), 
      is_index_back=false, filter_before_indexback[false], 
      range_key([CS.COMMITSSSSS(0x7e6038e54010)], [CS.shadow_pk_0(0x7e6038ea6f30)], [CS.shadow_pk_1(0x7e6038ea7220)]), range(MIN ; MAX), 
      range_cond([? = CS.COMMITSSSSS(0x7e6038e54010)(0x7ed75e2f8450)])
  20 - output([UM.UNITCODE(0x7ea69cd57e20)]), filter(nil), 
      distinct([UM.UNITCODE(0x7ea69cd57e20)])
  21 - output([UM.UNITCODE(0x7ea69cd57e20)]), filter(nil), sort_keys([UM.UNITCODE(0x7ea69cd57e20), ASC])
  22 - output([UM.UNITCODE(0x7ea69cd57e20)]), filter([UM.IFVALID(0x7ea69cd57710) = ?(0x7ea69cd56ff0)]), 
      access([UM.IFVALID(0x7ea69cd57710)], [UM.UNITCODE(0x7ea69cd57e20)]), partitions(p0), 
      is_index_back=true, filter_before_indexback[false], 
      range_key([UM.FGS(0x7ea69cd540b0)], [UM.DEPTCODE(0x7ea69cd55200)], [UM.CURRENCYCODE(0x7ea69cd56640)], [UM.UNITMAPPINGID(0x7edde8de2080)]), range(MIN,MIN,MIN,MIN ; MAX,MAX,MAX,MAX)always true, 
      range_cond([UM.FGS(0x7ea69cd540b0) = ?(0x7ea69cd53990)], [UM.DEPTCODE(0x7ea69cd55200) = ?(0x7ea69cd54ae0)], [UM.CURRENCYCODE(0x7ea69cd56640) = ?(0x7ea69cd55f20)])
  23 - output([EE.NAME(0x7ea69cda34e0)]), filter(nil), 
      distinct([EE.NAME(0x7ea69cda34e0)])
  24 - output([EE.NAME(0x7ea69cda34e0)]), filter(nil), sort_keys([EE.NAME(0x7ea69cda34e0), ASC])
  25 - output([EE.NAME(0x7ea69cda34e0)]), filter(nil), 
      access([EE.NAME(0x7ea69cda34e0)]), partitions(p0), 
      is_index_back=true, 
      range_key([EE.CODE(0x7ea69cda1c80)], [EE.UNIT_CODE(0x7ea69cda2dd0)], [EE.EMP_ID(0x7edde8e184c0)]), range(MIN,MIN,MIN ; MAX,MAX,MAX)always true, 
      range_cond([EE.CODE(0x7ea69cda1c80) = ?(0x7ea69cda1560)], [EE.UNIT_CODE(0x7ea69cda2dd0) = ?(0x7ea69cda26b0)])

Plan Type:
-------------------------------------
LOCAL

Optimization Info:
-------------------------------------

 

CSSCS 表是張大表,資料量:27.9億左右,BRANCHCODE 是分割槽欄位,分割槽型別是列表分割槽,COMMITSSSSS 欄位是主鍵

T111 資料量:288萬,T222 資料量:6738萬,這兩張都是普通表,沒有做分割槽,開窗函式 partition by COMMITSSSSS 欄位 

其實知道資料量以後就好辦,CBO無非也是需要透過統計資訊來了解每張表大小和資料分佈來執行最佳的SQL計劃。

如果一條SQL CBO執行緩慢,就需要人工干預進行最佳化,因為人腦才是最好的CBO。?

 

其實這條SQL在邏輯上是有問題的,我們可以進行等價改寫來最佳化SQL:

SELECT * FROM (
      WITH GG AS  (
            /* 內連檢視 */
            SELECT 
                T2.OLDCOMMISSIONRATE               AS OLDCOMMISSIONRATE,
                T2.OLDCOMMISSION                   AS OLDCOMMISSION,
                T2.COMMITSSSSS             AS COMMITSSSSS,
                T1.OPERFLAG                        AS OPERFLAG,
                T1.OPERATOR                        AS OPERATOR,
                T1.UPDATEDATE                      AS UPDATEDATE,
                T2.COMMISSIONRATE                  AS COMMISSIONRATE,
                T2.COMMISSION                      AS COMMISSION
            FROM  T111 T1,  T222 T2
            WHERE 1 = 1
            AND T2.SUBCOMPANY = '5010100'
            AND T1.UNIQUECODE LIKE '5010100%'
            AND T2.COMMISSIONTYPE = '0'
            AND T1.RATECHANGENO = T2.RATECHANGENO
            AND T1.STATUS = '1'
      )

SELECT CS.BRANCHCODE,
             (SELECT DISTINCT UM.UNITCODE
              FROM IFUNITMAPPING UM
              WHERE UM.FGS = CS.BRANCHCODE
                AND UM.DEPTCODE = CS.DEPTCODE
                AND UM.CURRENCYCODE = CS.PAYCURRENCY
                AND UM.IFVALID = '1')             AS UNITCODE,
             CS.SECTIONCODE,
             CS.PRODUCTGRPCODE,
             CS.HANDLERCODE,
             (SELECT DISTINCT(NAME)
              FROM IFEMPLOYEE EE
              WHERE EE.CODE = CS.HANDLERCODE
                AND EE.UNIT_CODE = CS.BRANCHCODE) AS HANDLERNAME,
             CS.POLICYNO,
             CS.ENDORSENO,
             CS.SIGNPREMIUM,
             CS.SIGNDATE,
             CS.STARTDATE,
             CS.COMMISSIONTYPE,
             CS.PAYCURRENCY,
             CS.AGENTCODE,
             B.OPERATOR,
             B.OLDCOMMISSION,
             B.OLDCOMMISSIONRATE,
             B.COMMISSION,
             B.COMMISSIONRATE,
             B.UPDATEDATE
      FROM CSSCS CS,
           (SELECT BB.NUM,
                   BB.OPERATOR,
                   BB.UPDATEDATE,
                   BB.COMMISSIONRATE,
                   BB.COMMISSION,
                   BB.COMMITSSSSS,
                   BB.OPERFLAG,
                   BB.OLDCOMMISSIONRATE,
                   BB.OLDCOMMISSION
            FROM (SELECT ROW_NUMBER() OVER (PARTITION BY GG.COMMITSSSSS ORDER BY GG.UPDATEDATE DESC) AS NUM,
                         GG.*
                  FROM GG
                  WHERE 1 = 1
                    AND GG.UPDATEDATE >= TO_DATE('2021-08-01 00:00:00', 'YYYY-MM-DD HH24:MI:SS')
                    AND GG.UPDATEDATE < TO_DATE('2021-09-01 00:00:00', 'YYYY-MM-DD HH24:MI:SS')
                    AND (GG.OPERFLAG IS NULL OR GG.OPERFLAG = '0')
                    ) BB
            WHERE BB.NUM = 1) B
      WHERE 
            B.COMMITSSSSS = CS.COMMITSSSSS
        AND CS.BRANCHCODE = '5010100'
        AND CS.PAYCURRENCY = '01'
        AND ROWNUM <= 5000
);
執行時間:29.48 ms

改寫後執行計劃:

==============================================================================
|ID|OPERATOR                    |NAME                        |EST. ROWS|COST |
------------------------------------------------------------------------------
|0 |SUBPLAN FILTER              |                            |1        |25287|
|1 | SORT                       |                            |1        |25240|
|2 |  SUBPLAN SCAN              |VIEW1                       |1        |25240|
|3 |   LIMIT                    |                            |1        |25240|
|4 |    NESTED-LOOP JOIN        |                            |1        |25240|
|5 |     SUBPLAN SCAN           |BB                          |1        |25232|
|6 |      WINDOW FUNCTION       |                            |1        |25232|
|7 |       SORT                 |                            |1        |25232|
|8 |        NESTED-LOOP JOIN    |                            |1        |25232|
|9 |         TABLE SCAN         |T1(IND_T111_3)              |1        |25144|
|10|         TABLE SCAN         |T2(IND_T222_1)              |1        |483  |
|11|     TABLE LOOKUP           |CS                          |1        |28   |
|12|      DISTRIBUTED TABLE SCAN|CS(PK_CSSCS)                |1        |5    |
|13| MERGE DISTINCT             |                            |1        |92   |
|14|  SORT                      |                            |1        |92   |
|15|   TABLE SCAN               |UM(IND_IFUNITMAPPING)       |1        |92   |
|16| MERGE DISTINCT             |                            |1        |92   |
|17|  SORT                      |                            |1        |92   |
|18|   TABLE SCAN               |EE(IND_IFEMPLOYEE_5)        |1        |92   |
==============================================================================

Outputs & filters: 
-------------------------------------
  0 - output([VIEW1.CS.BRANCHCODE(0x7e4fbba992a0)], [subquery(1)(0x7e30f992cbc0)], [VIEW1.CS.SECTIONCODE(0x7e4fbba9a150)], [VIEW1.CS.PRODUCTGRPCODE(0x7e4fbba9a440)], [VIEW1.CS.HANDLERCODE(0x7e4fbba9a730)], [subquery(2)(0x7e4fbb9b9570)], [VIEW1.CS.POLICYNO(0x7e4fbba9aa20)], [VIEW1.CS.ENDORSENO(0x7e4fbba9ad10)], [VIEW1.CS.SIGNPREMIUM(0x7e4fbba9b000)], [VIEW1.CS.SIGNDATE(0x7e4fbba9b2f0)], [VIEW1.CS.STARTDATE(0x7e4fbba9b5e0)], [VIEW1.CS.COMMISSIONTYPE(0x7e4fbba9b8d0)], [VIEW1.CS.PAYCURRENCY(0x7e4fbba99b70)], [VIEW1.CS.AGENTCODE(0x7e4fbba9bbc0)], [VIEW1.B.OPERATOR(0x7e4fbba9beb0)], [VIEW1.B.OLDCOMMISSION(0x7e4fbba9c1a0)], [VIEW1.B.OLDCOMMISSIONRATE(0x7e4fbba9c490)], [VIEW1.B.COMMISSION(0x7e4fbba9c780)], [VIEW1.B.COMMISSIONRATE(0x7e4fbba9ca70)], [VIEW1.B.UPDATEDATE(0x7e4fbba9cd60)]), filter(nil), 
      exec_params_([VIEW1.CS.BRANCHCODE(0x7e4fbba992a0)], [VIEW1.CS.DEPTCODE(0x7e4fbba99e60)], [VIEW1.CS.PAYCURRENCY(0x7e4fbba99b70)], [VIEW1.CS.HANDLERCODE(0x7e4fbba9a730)], [VIEW1.CS.BRANCHCODE(0x7e4fbba992a0)]), onetime_exprs_(nil), init_plan_idxs_(nil)
  1 - output([VIEW1.CS.BRANCHCODE(0x7e4fbba992a0)], [VIEW1.CS.SECTIONCODE(0x7e4fbba9a150)], [VIEW1.CS.PRODUCTGRPCODE(0x7e4fbba9a440)], [VIEW1.CS.HANDLERCODE(0x7e4fbba9a730)], [VIEW1.CS.POLICYNO(0x7e4fbba9aa20)], [VIEW1.CS.ENDORSENO(0x7e4fbba9ad10)], [VIEW1.CS.SIGNPREMIUM(0x7e4fbba9b000)], [VIEW1.CS.SIGNDATE(0x7e4fbba9b2f0)], [VIEW1.CS.STARTDATE(0x7e4fbba9b5e0)], [VIEW1.CS.COMMISSIONTYPE(0x7e4fbba9b8d0)], [VIEW1.CS.PAYCURRENCY(0x7e4fbba99b70)], [VIEW1.CS.AGENTCODE(0x7e4fbba9bbc0)], [VIEW1.B.OPERATOR(0x7e4fbba9beb0)], [VIEW1.B.OLDCOMMISSION(0x7e4fbba9c1a0)], [VIEW1.B.OLDCOMMISSIONRATE(0x7e4fbba9c490)], [VIEW1.B.COMMISSION(0x7e4fbba9c780)], [VIEW1.B.COMMISSIONRATE(0x7e4fbba9ca70)], [VIEW1.B.UPDATEDATE(0x7e4fbba9cd60)], [VIEW1.CS.DEPTCODE(0x7e4fbba99e60)]), filter(nil), sort_keys([VIEW1.B.UPDATEDATE(0x7e4fbba9cd60), ASC])
  2 - output([VIEW1.CS.BRANCHCODE(0x7e4fbba992a0)], [VIEW1.CS.PAYCURRENCY(0x7e4fbba99b70)], [VIEW1.CS.DEPTCODE(0x7e4fbba99e60)], [VIEW1.CS.SECTIONCODE(0x7e4fbba9a150)], [VIEW1.CS.PRODUCTGRPCODE(0x7e4fbba9a440)], [VIEW1.CS.HANDLERCODE(0x7e4fbba9a730)], [VIEW1.CS.POLICYNO(0x7e4fbba9aa20)], [VIEW1.CS.ENDORSENO(0x7e4fbba9ad10)], [VIEW1.CS.SIGNPREMIUM(0x7e4fbba9b000)], [VIEW1.CS.SIGNDATE(0x7e4fbba9b2f0)], [VIEW1.CS.STARTDATE(0x7e4fbba9b5e0)], [VIEW1.CS.COMMISSIONTYPE(0x7e4fbba9b8d0)], [VIEW1.CS.AGENTCODE(0x7e4fbba9bbc0)], [VIEW1.B.OPERATOR(0x7e4fbba9beb0)], [VIEW1.B.OLDCOMMISSION(0x7e4fbba9c1a0)], [VIEW1.B.OLDCOMMISSIONRATE(0x7e4fbba9c490)], [VIEW1.B.COMMISSION(0x7e4fbba9c780)], [VIEW1.B.COMMISSIONRATE(0x7e4fbba9ca70)], [VIEW1.B.UPDATEDATE(0x7e4fbba9cd60)]), filter(nil), 
      access([VIEW1.CS.BRANCHCODE(0x7e4fbba992a0)], [VIEW1.CS.PAYCURRENCY(0x7e4fbba99b70)], [VIEW1.CS.DEPTCODE(0x7e4fbba99e60)], [VIEW1.CS.SECTIONCODE(0x7e4fbba9a150)], [VIEW1.CS.PRODUCTGRPCODE(0x7e4fbba9a440)], [VIEW1.CS.HANDLERCODE(0x7e4fbba9a730)], [VIEW1.CS.POLICYNO(0x7e4fbba9aa20)], [VIEW1.CS.ENDORSENO(0x7e4fbba9ad10)], [VIEW1.CS.SIGNPREMIUM(0x7e4fbba9b000)], [VIEW1.CS.SIGNDATE(0x7e4fbba9b2f0)], [VIEW1.CS.STARTDATE(0x7e4fbba9b5e0)], [VIEW1.CS.COMMISSIONTYPE(0x7e4fbba9b8d0)], [VIEW1.CS.AGENTCODE(0x7e4fbba9bbc0)], [VIEW1.B.OPERATOR(0x7e4fbba9beb0)], [VIEW1.B.OLDCOMMISSION(0x7e4fbba9c1a0)], [VIEW1.B.OLDCOMMISSIONRATE(0x7e4fbba9c490)], [VIEW1.B.COMMISSION(0x7e4fbba9c780)], [VIEW1.B.COMMISSIONRATE(0x7e4fbba9ca70)], [VIEW1.B.UPDATEDATE(0x7e4fbba9cd60)])
  3 - output([CS.BRANCHCODE(0x7eb4cf6acd50)], [CS.PAYCURRENCY(0x7eb4cf6ad330)], [CS.DEPTCODE(0x7eb4cf6ad620)], [CS.SECTIONCODE(0x7eb4cf6ad910)], [CS.PRODUCTGRPCODE(0x7eb4cf6adc00)], [CS.HANDLERCODE(0x7eb4cf6adef0)], [CS.POLICYNO(0x7eb4cf6ae1e0)], [CS.ENDORSENO(0x7eb4cf6ae4d0)], [CS.SIGNPREMIUM(0x7eb4cf6ae7c0)], [CS.SIGNDATE(0x7eb4cf6aeab0)], [CS.STARTDATE(0x7eb4cf6aeda0)], [CS.COMMISSIONTYPE(0x7eb4cf6af090)], [CS.AGENTCODE(0x7eb4cf6af380)], [BB.OPERATOR(0x7eb4cf6b2240)], [BB.OLDCOMMISSION(0x7eb4cf6afc50)], [BB.OLDCOMMISSIONRATE(0x7eb4cf6af960)], [BB.COMMISSION(0x7eb4cf6b2b10)], [BB.COMMISSIONRATE(0x7eb4cf6b2820)], [BB.UPDATEDATE(0x7eb4cf6b2530)]), filter(nil), limit(?), offset(nil)
  4 - output([CS.BRANCHCODE(0x7eb4cf6acd50)], [CS.PAYCURRENCY(0x7eb4cf6ad330)], [CS.DEPTCODE(0x7eb4cf6ad620)], [CS.SECTIONCODE(0x7eb4cf6ad910)], [CS.PRODUCTGRPCODE(0x7eb4cf6adc00)], [CS.HANDLERCODE(0x7eb4cf6adef0)], [CS.POLICYNO(0x7eb4cf6ae1e0)], [CS.ENDORSENO(0x7eb4cf6ae4d0)], [CS.SIGNPREMIUM(0x7eb4cf6ae7c0)], [CS.SIGNDATE(0x7eb4cf6aeab0)], [CS.STARTDATE(0x7eb4cf6aeda0)], [CS.COMMISSIONTYPE(0x7eb4cf6af090)], [CS.AGENTCODE(0x7eb4cf6af380)], [BB.OPERATOR(0x7eb4cf6b2240)], [BB.OLDCOMMISSION(0x7eb4cf6afc50)], [BB.OLDCOMMISSIONRATE(0x7eb4cf6af960)], [BB.COMMISSION(0x7eb4cf6b2b10)], [BB.COMMISSIONRATE(0x7eb4cf6b2820)], [BB.UPDATEDATE(0x7eb4cf6b2530)]), filter(nil), 
      conds(nil), nl_params_([BB.COMMITSSSSS(0x7eb4cf6b1f50)]), batch_join=true
  5 - output([BB.OLDCOMMISSIONRATE(0x7eb4cf6af960)], [BB.OLDCOMMISSION(0x7eb4cf6afc50)], [BB.COMMITSSSSS(0x7eb4cf6b1f50)], [BB.OPERATOR(0x7eb4cf6b2240)], [BB.UPDATEDATE(0x7eb4cf6b2530)], [BB.COMMISSIONRATE(0x7eb4cf6b2820)], [BB.COMMISSION(0x7eb4cf6b2b10)]), filter([BB.NUM(0x7eb4cf6af670) = 1(0x7eb4cf6b3660)]), 
      access([BB.NUM(0x7eb4cf6af670)], [BB.OLDCOMMISSIONRATE(0x7eb4cf6af960)], [BB.OLDCOMMISSION(0x7eb4cf6afc50)], [BB.COMMITSSSSS(0x7eb4cf6b1f50)], [BB.OPERATOR(0x7eb4cf6b2240)], [BB.UPDATEDATE(0x7eb4cf6b2530)], [BB.COMMISSIONRATE(0x7eb4cf6b2820)], [BB.COMMISSION(0x7eb4cf6b2b10)])
  6 - output([T_WIN_FUN_ROW_NUMBER()(0x7eb4cf760030)], [T2.OLDCOMMISSIONRATE(0x7eb4cf758d30)], [T2.OLDCOMMISSION(0x7eb4cf759020)], [T2.COMMITSSSSS(0x7eb4cf759310)], [T1.OPERATOR(0x7eb4cf7598f0)], [T1.UPDATEDATE(0x7eb4cf759be0)], [T2.COMMISSIONRATE(0x7eb4cf759ed0)], [T2.COMMISSION(0x7eb4cf75a1c0)]), filter(nil), 
      win_expr(T_WIN_FUN_ROW_NUMBER()(0x7eb4cf760030)), partition_by([T2.COMMITSSSSS(0x7eb4cf759310)]), order_by([T1.UPDATEDATE(0x7eb4cf759be0), DESC]), window_type(RANGE), upper(UNBOUNDED PRECEDING), lower(UNBOUNDED FOLLOWING)
  7 - output([T2.COMMITSSSSS(0x7eb4cf759310)], [T1.UPDATEDATE(0x7eb4cf759be0)], [T2.OLDCOMMISSIONRATE(0x7eb4cf758d30)], [T2.OLDCOMMISSION(0x7eb4cf759020)], [T1.OPERATOR(0x7eb4cf7598f0)], [T2.COMMISSIONRATE(0x7eb4cf759ed0)], [T2.COMMISSION(0x7eb4cf75a1c0)]), filter(nil), sort_keys([T2.COMMITSSSSS(0x7eb4cf759310), ASC], [T1.UPDATEDATE(0x7eb4cf759be0), DESC])
  8 - output([T2.COMMITSSSSS(0x7eb4cf759310)], [T1.UPDATEDATE(0x7eb4cf759be0)], [T2.OLDCOMMISSIONRATE(0x7eb4cf758d30)], [T2.OLDCOMMISSION(0x7eb4cf759020)], [T1.OPERATOR(0x7eb4cf7598f0)], [T2.COMMISSIONRATE(0x7eb4cf759ed0)], [T2.COMMISSION(0x7eb4cf75a1c0)]), filter(nil), 
      conds(nil), nl_params_([T1.RATECHANGENO(0x7eb4cf758460)]), batch_join=true
  9 - output([T1.RATECHANGENO(0x7eb4cf758460)], [T1.OPERATOR(0x7eb4cf7598f0)], [T1.UPDATEDATE(0x7eb4cf759be0)]), filter([(T_OP_LIKE, T1.UNIQUECODE(0x7eb4cf757e80), ?, '\')(0x7eb4cf75f530)], [T1.STATUS(0x7eb4cf758a40) = ?(0x7eb4cf75c630)], [(T_OP_IS, T1.OPERFLAG(0x7eb4cf759600), NULL, 0)(0x7eb4cf75df40) OR T1.OPERFLAG(0x7eb4cf759600) = ?(0x7eb4cf75ecd0)(0x7eb4cf75d6f0)]), 
      access([T1.UNIQUECODE(0x7eb4cf757e80)], [T1.RATECHANGENO(0x7eb4cf758460)], [T1.STATUS(0x7eb4cf758a40)], [T1.OPERFLAG(0x7eb4cf759600)], [T1.OPERATOR(0x7eb4cf7598f0)], [T1.UPDATEDATE(0x7eb4cf759be0)]), partitions(p0), 
      is_index_back=true, filter_before_indexback[false,false,false], 
      range_key([T1.UPDATEDATE(0x7eb4cf759be0)], [T1.RATECHANGENO(0x7eb4cf758460)]), range(2021-08-01 00:00:00,MIN ; 2021-09-01 00:00:00,MIN), 
      range_cond([T1.UPDATEDATE(0x7eb4cf759be0) >= ?(0x7eb4cf75a4b0)], [T1.UPDATEDATE(0x7eb4cf759be0) < ?(0x7eb4cf75ad10)])
  10 - output([T2.OLDCOMMISSIONRATE(0x7eb4cf758d30)], [T2.OLDCOMMISSION(0x7eb4cf759020)], [T2.COMMITSSSSS(0x7eb4cf759310)], [T2.COMMISSIONRATE(0x7eb4cf759ed0)], [T2.COMMISSION(0x7eb4cf75a1c0)]), filter([T2.SUBCOMPANY(0x7eb4cf757b90) = ?(0x7eb4cf75b570)], [T2.COMMISSIONTYPE(0x7eb4cf758170) = ?(0x7eb4cf75bdd0)]), 
      access([T2.SUBCOMPANY(0x7eb4cf757b90)], [T2.COMMISSIONTYPE(0x7eb4cf758170)], [T2.OLDCOMMISSIONRATE(0x7eb4cf758d30)], [T2.OLDCOMMISSION(0x7eb4cf759020)], [T2.COMMITSSSSS(0x7eb4cf759310)], [T2.COMMISSIONRATE(0x7eb4cf759ed0)], [T2.COMMISSION(0x7eb4cf75a1c0)]), partitions(p0), 
      is_index_back=true, filter_before_indexback[false,false], 
      range_key([T2.RATECHANGENO(0x7eb4cf758750)], [T2.RATECHANGEDETAILNO(0x7eb4cf7ba560)]), range(MIN ; MAX), 
      range_cond([? = T2.RATECHANGENO(0x7eb4cf758750)(0x7eb4cf7dfdb0)])
  11 - output([CS.BRANCHCODE(0x7eb4cf6acd50)], [CS.PAYCURRENCY(0x7eb4cf6ad330)], [CS.DEPTCODE(0x7eb4cf6ad620)], [CS.SECTIONCODE(0x7eb4cf6ad910)], [CS.PRODUCTGRPCODE(0x7eb4cf6adc00)], [CS.HANDLERCODE(0x7eb4cf6adef0)], [CS.POLICYNO(0x7eb4cf6ae1e0)], [CS.ENDORSENO(0x7eb4cf6ae4d0)], [CS.SIGNPREMIUM(0x7eb4cf6ae7c0)], [CS.SIGNDATE(0x7eb4cf6aeab0)], [CS.STARTDATE(0x7eb4cf6aeda0)], [CS.COMMISSIONTYPE(0x7eb4cf6af090)], [CS.AGENTCODE(0x7eb4cf6af380)]), filter([CS.PAYCURRENCY(0x7eb4cf6ad330) = ?(0x7eb4cf6b49b0)]), 
      partitions(p27)
  12 - output([CS.BRANCHCODE(0x7eb4cf6acd50)], [CS.__pk_increment(0x7eb4cf6f38b0)]), filter([CS.BRANCHCODE(0x7eb4cf6acd50) = ?(0x7eb4cf6b4150)]), 
      access([CS.BRANCHCODE(0x7eb4cf6acd50)], [CS.__pk_increment(0x7eb4cf6f38b0)]), partitions(p0), 
      is_index_back=false, filter_before_indexback[false], 
      range_key([CS.COMMITSSSSS(0x7eb4cf6ad040)], [CS.shadow_pk_0(0x7eb4cf6f49b0)], [CS.shadow_pk_1(0x7eb4cf6f4ca0)]), range(MIN ; MAX), 
      range_cond([? = CS.COMMITSSSSS(0x7eb4cf6ad040)(0x7e9ffbd12000)])
  13 - output([UM.UNITCODE(0x7e4fbb9b6e20)]), filter(nil), 
      distinct([UM.UNITCODE(0x7e4fbb9b6e20)])
  14 - output([UM.UNITCODE(0x7e4fbb9b6e20)]), filter(nil), sort_keys([UM.UNITCODE(0x7e4fbb9b6e20), ASC])
  15 - output([UM.UNITCODE(0x7e4fbb9b6e20)]), filter([UM.IFVALID(0x7e4fbb9b6710) = ?(0x7e4fbb9b5ff0)]), 
      access([UM.IFVALID(0x7e4fbb9b6710)], [UM.UNITCODE(0x7e4fbb9b6e20)]), partitions(p0), 
      is_index_back=true, filter_before_indexback[false], 
      range_key([UM.FGS(0x7e4fbb9b30b0)], [UM.DEPTCODE(0x7e4fbb9b4200)], [UM.CURRENCYCODE(0x7e4fbb9b5640)], [UM.UNITMAPPINGID(0x7e9ffbd614f0)]), range(MIN,MIN,MIN,MIN ; MAX,MAX,MAX,MAX)always true, 
      range_cond([UM.FGS(0x7e4fbb9b30b0) = ?(0x7e4fbb9b2990)], [UM.DEPTCODE(0x7e4fbb9b4200) = ?(0x7e4fbb9b3ae0)], [UM.CURRENCYCODE(0x7e4fbb9b5640) = ?(0x7e4fbb9b4f20)])
  16 - output([EE.NAME(0x7e4fbba024e0)]), filter(nil), 
      distinct([EE.NAME(0x7e4fbba024e0)])
  17 - output([EE.NAME(0x7e4fbba024e0)]), filter(nil), sort_keys([EE.NAME(0x7e4fbba024e0), ASC])
  18 - output([EE.NAME(0x7e4fbba024e0)]), filter(nil), 
      access([EE.NAME(0x7e4fbba024e0)]), partitions(p0), 
      is_index_back=true, 
      range_key([EE.CODE(0x7e4fbba00c80)], [EE.UNIT_CODE(0x7e4fbba01dd0)], [EE.EMP_ID(0x7e9ffbd99940)]), range(MIN,MIN,MIN ; MAX,MAX,MAX)always true, 
      range_cond([EE.CODE(0x7e4fbba00c80) = ?(0x7e4fbba00560)], [EE.UNIT_CODE(0x7e4fbba01dd0) = ?(0x7e4fbba016b0)])
Plan Type:
-------------------------------------
LOCAL

Optimization Info:
-------------------------------------

雖然 OcenBase 從圖形化工具看到的執行計劃是假的,但是透過觀察也可以看到改寫前SQL的 COST值從 1097485 降到 25287,執行時間也從 155s 降低到 29.48ms 就能出結果

透過差集比較SQL改寫前後是等價的,本次案例已經最佳化完成。???????

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