最近在南宁出差，搞某个银行的核心系统跑批优化项目。
Oracle 19c Aix 生产环境跑完整体的批要40多分钟左右，在Ob国产环境（国产系统+国产海光CPU）跑要3个小时😂。这个真不怪Ob，只能说海光处理器真是垃圾中的战斗机。
不过还好，测试环境硬件相对不给力的情况下，给哥优化到95分钟跑完，还算不错成绩了，目标是整体跑批时间搞到80分钟左右，就给领导交差。😁
今天在跑批串行的节点（前后有依赖关系的节点上）遇到条慢SQL，挺有意思的，分享下。
表数据量：
表名 | 分区规则 | 本地索引数量 | 全局索引数量 | 主键PK数量 | 数据行数
------------------------------------------------------------------------------------------------------------------------------------------------
ENS_CBANK.FFFFFF | 非分区表 | 0 | 1 | 1 | 72
ENS_CBANK.XXXXXXX | 非分区表 | 0 | 1 | 1 | 536
ENS_CBANK.CCCCCCCC | PARTITION BY HASH("INTERNAL_KEY") | 8 | 2 | 1 | 17289744
------------------------------------------------------------------------------------------------------------------------------------------------慢SQL：
SELECT /*+ parallel(16) */
DISTINCT A.PROD_TYPE,
A.ACCT_NAME,
A.ACCT_CCY,
A.SEQ_NO,
B.BRANCH,
B.INTERNAL_CLIENT,
B.COMPANY
FROM (
SELECT DISTINCT
PROD_TYPE,
ACCT_NAME,
ACCT_CCY,
SEQ_NO,
REGEXP_SUBSTR(BRANCH_ROLE, '[^|]+', 1, LEVEL) BRANCH_ROLE
FROM FFFFFF
CONNECT BY NOCYCLE LEVEL <= REGEXP_COUNT(BRANCH_ROLE, '[^|]+')
AND PRIOR PROD_TYPE = PROD_TYPE
AND PRIOR DBMS_RANDOM.VALUE IS NOT NULL
ORDER BY PROD_TYPE
) A,
(
SELECT DISTINCT
BRANCH,
INTERNAL_CLIENT,
COMPANY,
REGEXP_SUBSTR(BRANCH_ROLE, '[^|]+', 1, LEVEL) BRANCH_ROLE
FROM XXXXXXX
WHERE AUTO_INNER_FLAG = 'Y'
AND TRAN_BR_IND = 'Y'
CONNECT BY NOCYCLE LEVEL <= REGEXP_COUNT(BRANCH_ROLE, '[^|]+')
AND PRIOR BRANCH = BRANCH
AND PRIOR DBMS_RANDOM.VALUE IS NOT NULL
ORDER BY BRANCH
) B
WHERE A.BRANCH_ROLE = B.BRANCH_ROLE
AND NOT EXISTS(SELECT 1 FROM CCCCCCCC C WHERE C.BASE_ACCT_NO = (B.BRANCH || A.PROD_TYPE || A.SEQ_NO));
20 rows in set (10.027 sec)慢SQL执行计划：
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Query Plan |
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| ==================================================================================================== |
| |ID|OPERATOR |NAME |EST.ROWS|EST.TIME(us)| |
| ---------------------------------------------------------------------------------------------------- |
| |0 |HASH DISTINCT | |2500 |66969 | |
| |1 |└─NESTED-LOOP ANTI JOIN | |2500 |65324 | |
| |2 | ├─HASH JOIN | |2500 |13287 | |
| |3 | │ ├─SUBPLAN SCAN |A |91 |1575 | |
| |4 | │ │ └─HASH DISTINCT | |91 |1574 | |
| |5 | │ │ └─SUBPLAN SCAN |VIEW1 |91 |1513 | |
| |6 | │ │ └─NESTED-LOOP CONNECT BY | |91 |1513 | |
| |7 | │ │ ├─SUBPLAN SCAN |VIEW2 |72 |9 | |
| |8 | │ │ │ └─DISTRIBUTED TABLE FULL SCAN |FFFFFF |72 |9 | |
| |9 | │ │ └─SUBPLAN SCAN |VIEW3 |1 |21 | |
| |10| │ │ └─DISTRIBUTED TABLE RANGE SCAN|FFFFFF |1 |21 | |
| |11| │ └─SUBPLAN SCAN |B |313 |11416 | |
| |12| │ └─HASH DISTINCT | |313 |11415 | |
| |13| │ └─SUBPLAN SCAN |VIEW4 |313 |11236 | |
| |14| │ └─NESTED-LOOP CONNECT BY | |626 |11209 | |
| |15| │ ├─SUBPLAN SCAN |VIEW5 |536 |33 | |
| |16| │ │ └─DISTRIBUTED TABLE FULL SCAN |XXXXXXX |536 |32 | |
| |17| │ └─SUBPLAN SCAN |VIEW6 |1 |21 | |
| |18| │ └─DISTRIBUTED TABLE GET |XXXXXXX |1 |21 | |
| |19| └─DISTRIBUTED TABLE RANGE SCAN |C(IDX_CCCCCCC_GLOBAL_INDEX2)|1 |21 | |
| ==================================================================================================== |
| Outputs & filters: |
| ------------------------------------- |
| 0 - output([A.PROD_TYPE(0x7f6cd80ac480)], [A.ACCT_NAME(0x7f6cd80b4ac0)], [A.ACCT_CCY(0x7f6cd80b8240)], [A.SEQ_NO(0x7f6cd80af970)], [B.BRANCH(0x7f6cd80a6020)], |
| [B.INTERNAL_CLIENT(0x7f6cd80bc420)], [B.COMPANY(0x7f6cd80c2b10)]), filter(nil) |
| distinct([A.PROD_TYPE(0x7f6cd80ac480)], [A.ACCT_NAME(0x7f6cd80b4ac0)], [A.ACCT_CCY(0x7f6cd80b8240)], [A.SEQ_NO(0x7f6cd80af970)], [B.BRANCH(0x7f6cd80a6020)], |
| [B.INTERNAL_CLIENT(0x7f6cd80bc420)], [B.COMPANY(0x7f6cd80c2b10)]) |
| 1 - output([A.PROD_TYPE(0x7f6cd80ac480)], [A.ACCT_NAME(0x7f6cd80b4ac0)], [A.ACCT_CCY(0x7f6cd80b8240)], [A.SEQ_NO(0x7f6cd80af970)], [B.BRANCH(0x7f6cd80a6020)], |
| [B.INTERNAL_CLIENT(0x7f6cd80bc420)], [B.COMPANY(0x7f6cd80c2b10)]), filter(nil) |
| conds(nil), nl_params_([B.BRANCH(0x7f6cd80a6020)(:8)], [A.PROD_TYPE(0x7f6cd80ac480)(:9)], [A.SEQ_NO(0x7f6cd80af970)(:10)]), use_batch=false |
| 2 - output([A.PROD_TYPE(0x7f6cd80ac480)], [A.ACCT_NAME(0x7f6cd80b4ac0)], [A.ACCT_CCY(0x7f6cd80b8240)], [A.SEQ_NO(0x7f6cd80af970)], [B.BRANCH(0x7f6cd80a6020)], |
| [B.INTERNAL_CLIENT(0x7f6cd80bc420)], [B.COMPANY(0x7f6cd80c2b10)]), filter(nil) |
| equal_conds([A.BRANCH_ROLE(0x7f6cd808b490) = B.BRANCH_ROLE(0x7f6cd808b780)(0x7f6cd808ad40)]), other_conds(nil) |
| 3 - output([A.BRANCH_ROLE(0x7f6cd808b490)], [A.PROD_TYPE(0x7f6cd80ac480)], [A.SEQ_NO(0x7f6cd80af970)], [A.ACCT_NAME(0x7f6cd80b4ac0)], [A.ACCT_CCY(0x7f6cd80b8240)]), filter(nil) |
| access([A.BRANCH_ROLE(0x7f6cd808b490)], [A.PROD_TYPE(0x7f6cd80ac480)], [A.SEQ_NO(0x7f6cd80af970)], [A.ACCT_NAME(0x7f6cd80b4ac0)], [A.ACCT_CCY(0x7f6cd80b8240)]) |
| 4 - output([VIEW1.FFFFFF.PROD_TYPE(0x7f6cd80e1a10)], [VIEW1.FFFFFF.ACCT_NAME(0x7f6cd80e2590)], [VIEW1.FFFFFF.ACCT_CCY(0x7f6cd80e1cf0)], |
| [VIEW1.FFFFFF.SEQ_NO(0x7f6cd80e1fd0)], [REGEXP_SUBSTR(cast(VIEW1.FFFFFF.BRANCH_ROLE(0x7f6cd80e22b0), VARCHAR2(1048576 |
| ))(0x7f6cd804f830), cast('[^|]+', VARCHAR2(1048576 ))(0x7f6cd8050380), 1, VIEW1.LEVEL(0x7f6cd80e2870))(0x7f6cd804e000)]), filter(nil) |
| distinct([VIEW1.FFFFFF.PROD_TYPE(0x7f6cd80e1a10)], [VIEW1.FFFFFF.ACCT_NAME(0x7f6cd80e2590)], [VIEW1.FFFFFF.ACCT_CCY(0x7f6cd80e1cf0)], |
| [VIEW1.FFFFFF.SEQ_NO(0x7f6cd80e1fd0)], [REGEXP_SUBSTR(cast(VIEW1.FFFFFF.BRANCH_ROLE(0x7f6cd80e22b0), VARCHAR2(1048576 |
| ))(0x7f6cd804f830), cast('[^|]+', VARCHAR2(1048576 ))(0x7f6cd8050380), 1, VIEW1.LEVEL(0x7f6cd80e2870))(0x7f6cd804e000)]) |
| 5 - output([VIEW1.FFFFFF.PROD_TYPE(0x7f6cd80e1a10)], [VIEW1.FFFFFF.ACCT_CCY(0x7f6cd80e1cf0)], [VIEW1.FFFFFF.SEQ_NO(0x7f6cd80e1fd0)], |
| [VIEW1.FFFFFF.BRANCH_ROLE(0x7f6cd80e22b0)], [VIEW1.FFFFFF.ACCT_NAME(0x7f6cd80e2590)], [VIEW1.LEVEL(0x7f6cd80e2870)]), filter(nil) |
| access([VIEW1.FFFFFF.PROD_TYPE(0x7f6cd80e1a10)], [VIEW1.FFFFFF.ACCT_CCY(0x7f6cd80e1cf0)], [VIEW1.FFFFFF.SEQ_NO(0x7f6cd80e1fd0)], |
| [VIEW1.FFFFFF.BRANCH_ROLE(0x7f6cd80e22b0)], [VIEW1.FFFFFF.ACCT_NAME(0x7f6cd80e2590)], [VIEW1.LEVEL(0x7f6cd80e2870)]) |
| 6 - output([VIEW3.FFFFFF.PROD_TYPE(0x7f6cd810a810)], [VIEW3.FFFFFF.ACCT_CCY(0x7f6cd810aaf0)], [VIEW3.FFFFFF.SEQ_NO(0x7f6cd810add0)], |
| [VIEW3.FFFFFF.BRANCH_ROLE(0x7f6cd810b0b0)], [VIEW3.FFFFFF.ACCT_NAME(0x7f6cd810b390)], [LEVEL(0x7f6cd8042190)]), filter(nil) |
| conds(nil), nl_params_([LEVEL(0x7f6cd8042190)(:0)], [VIEW2.FFFFFF.PROD_TYPE(0x7f6cd81096c0)(:1)], [(T_OP_PRIOR, oceanbase.DBMS_RANDOM.VALUE()(0x7f6cd804a480))(0x7f6cd8047a00)(:2 |
| )]), use_batch=false |
| 7 - output([VIEW2.FFFFFF.PROD_TYPE(0x7f6cd81096c0)], [VIEW2.FFFFFF.ACCT_CCY(0x7f6cd81099a0)], [VIEW2.FFFFFF.SEQ_NO(0x7f6cd8109c80)], |
| [VIEW2.FFFFFF.BRANCH_ROLE(0x7f6cd8109f60)], [VIEW2.FFFFFF.ACCT_NAME(0x7f6cd810a240)]), filter(nil) |
| access([VIEW2.FFFFFF.PROD_TYPE(0x7f6cd81096c0)], [VIEW2.FFFFFF.ACCT_CCY(0x7f6cd81099a0)], [VIEW2.FFFFFF.SEQ_NO(0x7f6cd8109c80)], |
| [VIEW2.FFFFFF.BRANCH_ROLE(0x7f6cd8109f60)], [VIEW2.FFFFFF.ACCT_NAME(0x7f6cd810a240)]) |
| 8 - output([FFFFFF.PROD_TYPE(0x7f6cd80471e0)], [FFFFFF.ACCT_CCY(0x7f6cd804d700)], [FFFFFF.SEQ_NO(0x7f6cd804dd00)], |
| [FFFFFF.BRANCH_ROLE(0x7f6cd8043c50)], [FFFFFF.ACCT_NAME(0x7f6cd804d100)]), filter(nil) |
| access([FFFFFF.PROD_TYPE(0x7f6cd80471e0)], [FFFFFF.ACCT_CCY(0x7f6cd804d700)], [FFFFFF.SEQ_NO(0x7f6cd804dd00)], |
| [FFFFFF.BRANCH_ROLE(0x7f6cd8043c50)], [FFFFFF.ACCT_NAME(0x7f6cd804d100)]), partitions(p0) |
| is_index_back=false, is_global_index=false, |
| range_key([FFFFFF.PROD_TYPE(0x7f6cd80471e0)], [FFFFFF.ACCT_CCY(0x7f6cd804d700)], [FFFFFF.SEQ_NO(0x7f6cd804dd00)]), |
| range(MIN,MIN,MIN ; MAX,MAX,MAX)always true |
| 9 - output([VIEW3.FFFFFF.PROD_TYPE(0x7f6cd810a810)], [VIEW3.FFFFFF.ACCT_CCY(0x7f6cd810aaf0)], [VIEW3.FFFFFF.SEQ_NO(0x7f6cd810add0)], |
| [VIEW3.FFFFFF.BRANCH_ROLE(0x7f6cd810b0b0)], [VIEW3.FFFFFF.ACCT_NAME(0x7f6cd810b390)]), filter(nil), startup_filter([:2 |
| IS NOT NULL(0x7f56b3552bb0)]) |
| access([VIEW3.FFFFFF.PROD_TYPE(0x7f6cd810a810)], [VIEW3.FFFFFF.ACCT_CCY(0x7f6cd810aaf0)], [VIEW3.FFFFFF.SEQ_NO(0x7f6cd810add0)], |
| [VIEW3.FFFFFF.BRANCH_ROLE(0x7f6cd810b0b0)], [VIEW3.FFFFFF.ACCT_NAME(0x7f6cd810b390)]) |
| 10 - output([FFFFFF.PROD_TYPE(0x7f6cd8108560)], [FFFFFF.ACCT_CCY(0x7f6cd8108840)], [FFFFFF.SEQ_NO(0x7f6cd8108b20)], |
| [FFFFFF.BRANCH_ROLE(0x7f6cd8108e00)], [FFFFFF.ACCT_NAME(0x7f6cd81090e0)]), filter([:0 <= REGEXP_COUNT(cast(FFFFFF.BRANCH_ROLE(0x7f6cd8108e00), |
| VARCHAR2(1048576 ))(0x7f56b3553480), cast('[^|]+', VARCHAR2(1048576 ))(0x7f6cd8044b50))(0x7f56b3553d20)(0x7f56b35545c0)]) |
| access([FFFFFF.PROD_TYPE(0x7f6cd8108560)], [FFFFFF.ACCT_CCY(0x7f6cd8108840)], [FFFFFF.SEQ_NO(0x7f6cd8108b20)], |
| [FFFFFF.BRANCH_ROLE(0x7f6cd8108e00)], [FFFFFF.ACCT_NAME(0x7f6cd81090e0)]), partitions(p0) |
| is_index_back=false, is_global_index=false, filter_before_indexback[false], |
| range_key([FFFFFF.PROD_TYPE(0x7f6cd8108560)], [FFFFFF.ACCT_CCY(0x7f6cd8108840)], [FFFFFF.SEQ_NO(0x7f6cd8108b20)]), |
| range(MIN,MIN,MIN ; MAX,MAX,MAX)always true, |
| range_cond([:1 = FFFFFF.PROD_TYPE(0x7f6cd8108560)(0x7f56b3554e80)]) |
| 11 - output([B.BRANCH_ROLE(0x7f6cd808b780)], [B.BRANCH(0x7f6cd80a6020)], [B.INTERNAL_CLIENT(0x7f6cd80bc420)], [B.COMPANY(0x7f6cd80c2b10)]), filter(nil) |
| access([B.BRANCH_ROLE(0x7f6cd808b780)], [B.BRANCH(0x7f6cd80a6020)], [B.INTERNAL_CLIENT(0x7f6cd80bc420)], [B.COMPANY(0x7f6cd80c2b10)]) |
| 12 - output([VIEW4.XXXXXXX.BRANCH(0x7f6cd8125e10)], [VIEW4.XXXXXXX.INTERNAL_CLIENT(0x7f6cd8126990)], [VIEW4.XXXXXXX.COMPANY(0x7f6cd8126c70)], [REGEXP_SUBSTR(cast(VIEW4.XXXXXXX.BRANCH_ROLE(0x7f |
| 6cd81260f0), VARCHAR2(1048576 ))(0x7f6cd8087290), cast('[^|]+', VARCHAR2(1048576 ))(0x7f6cd8087de0), 1, VIEW4.LEVEL(0x7f6cd8126f50))(0x7f6cd8085740)]), filter(nil) |
| distinct([VIEW4.XXXXXXX.BRANCH(0x7f6cd8125e10)], [VIEW4.XXXXXXX.INTERNAL_CLIENT(0x7f6cd8126990)], [VIEW4.XXXXXXX.COMPANY(0x7f6cd8126c70)], [REGEXP_SUBSTR(cast(VIEW4.XXXXXXX.BRANCH_ROLE(0x |
| 7f6cd81260f0), VARCHAR2(1048576 ))(0x7f6cd8087290), cast('[^|]+', VARCHAR2(1048576 ))(0x7f6cd8087de0), 1, VIEW4.LEVEL(0x7f6cd8126f50))(0x7f6cd8085740)]) |
| 13 - output([VIEW4.XXXXXXX.BRANCH(0x7f6cd8125e10)], [VIEW4.XXXXXXX.BRANCH_ROLE(0x7f6cd81260f0)], [VIEW4.XXXXXXX.INTERNAL_CLIENT(0x7f6cd8126990)], |
| [VIEW4.XXXXXXX.COMPANY(0x7f6cd8126c70)], [VIEW4.LEVEL(0x7f6cd8126f50)]), filter([VIEW4.XXXXXXX.TRAN_BR_IND(0x7f6cd81266b0) = cast('Y', VARCHAR2(1048576 |
| ))(0x7f6cd8083cb0)(0x7f6cd807a290)], [VIEW4.XXXXXXX.AUTO_INNER_FLAG(0x7f6cd81263d0) = cast('Y', VARCHAR2(1048576 ))(0x7f6cd80791a0)(0x7f6cd806f780)]) |
| access([VIEW4.XXXXXXX.BRANCH(0x7f6cd8125e10)], [VIEW4.XXXXXXX.BRANCH_ROLE(0x7f6cd81260f0)], [VIEW4.XXXXXXX.AUTO_INNER_FLAG(0x7f6cd81263d0)], |
| [VIEW4.XXXXXXX.TRAN_BR_IND(0x7f6cd81266b0)], [VIEW4.XXXXXXX.INTERNAL_CLIENT(0x7f6cd8126990)], [VIEW4.XXXXXXX.COMPANY(0x7f6cd8126c70)], [VIEW4.LEVEL(0x7f6cd8126f50)]) |
| 14 - output([VIEW6.XXXXXXX.BRANCH(0x7f6cd8157b10)], [VIEW6.XXXXXXX.BRANCH_ROLE(0x7f6cd8157df0)], [VIEW6.XXXXXXX.AUTO_INNER_FLAG(0x7f6cd81580d0)], |
| [VIEW6.XXXXXXX.TRAN_BR_IND(0x7f6cd81583b0)], [VIEW6.XXXXXXX.INTERNAL_CLIENT(0x7f6cd8158690)], [VIEW6.XXXXXXX.COMPANY(0x7f6cd8158970)], [LEVEL(0x7f6cd8064af0)]), filter(nil) |
| conds(nil), nl_params_([LEVEL(0x7f6cd8064af0)(:3)], [VIEW5.XXXXXXX.BRANCH(0x7f6cd81566e0)(:4)], [(T_OP_PRIOR, oceanbase.DBMS_RANDOM.VALUE()(0x7f6cd806cde0))(0x7f6cd806a360)(:5)]), |
| use_batch=false |
| 15 - output([VIEW5.XXXXXXX.BRANCH(0x7f6cd81566e0)], [VIEW5.XXXXXXX.BRANCH_ROLE(0x7f6cd81569c0)], [VIEW5.XXXXXXX.AUTO_INNER_FLAG(0x7f6cd8156ca0)], |
| [VIEW5.XXXXXXX.TRAN_BR_IND(0x7f6cd8156f80)], [VIEW5.XXXXXXX.INTERNAL_CLIENT(0x7f6cd8157260)], [VIEW5.XXXXXXX.COMPANY(0x7f6cd8157540)]), filter(nil) |
| access([VIEW5.XXXXXXX.BRANCH(0x7f6cd81566e0)], [VIEW5.XXXXXXX.BRANCH_ROLE(0x7f6cd81569c0)], [VIEW5.XXXXXXX.AUTO_INNER_FLAG(0x7f6cd8156ca0)], |
| [VIEW5.XXXXXXX.TRAN_BR_IND(0x7f6cd8156f80)], [VIEW5.XXXXXXX.INTERNAL_CLIENT(0x7f6cd8157260)], [VIEW5.XXXXXXX.COMPANY(0x7f6cd8157540)]) |
| 16 - output([XXXXXXX.BRANCH(0x7f6cd8069b40)], [XXXXXXX.BRANCH_ROLE(0x7f6cd80665b0)], [XXXXXXX.AUTO_INNER_FLAG(0x7f6cd806fed0)], [XXXXXXX.TRAN_BR_IND(0x7f6cd807a9e0)], |
| [XXXXXXX.INTERNAL_CLIENT(0x7f6cd8084e40)], [XXXXXXX.COMPANY(0x7f6cd8085440)]), filter(nil) |
| access([XXXXXXX.BRANCH(0x7f6cd8069b40)], [XXXXXXX.BRANCH_ROLE(0x7f6cd80665b0)], [XXXXXXX.AUTO_INNER_FLAG(0x7f6cd806fed0)], [XXXXXXX.TRAN_BR_IND(0x7f6cd807a9e0)], |
| [XXXXXXX.INTERNAL_CLIENT(0x7f6cd8084e40)], [XXXXXXX.COMPANY(0x7f6cd8085440)]), partitions(p0) |
| is_index_back=false, is_global_index=false, |
| range_key([XXXXXXX.BRANCH(0x7f6cd8069b40)]), range(MIN ; MAX)always true |
| 17 - output([VIEW6.XXXXXXX.BRANCH(0x7f6cd8157b10)], [VIEW6.XXXXXXX.BRANCH_ROLE(0x7f6cd8157df0)], [VIEW6.XXXXXXX.AUTO_INNER_FLAG(0x7f6cd81580d0)], |
| [VIEW6.XXXXXXX.TRAN_BR_IND(0x7f6cd81583b0)], [VIEW6.XXXXXXX.INTERNAL_CLIENT(0x7f6cd8158690)], [VIEW6.XXXXXXX.COMPANY(0x7f6cd8158970)]), filter(nil), startup_filter([:5 |
| IS NOT NULL(0x7f556fed9aa0)]) |
| access([VIEW6.XXXXXXX.BRANCH(0x7f6cd8157b10)], [VIEW6.XXXXXXX.BRANCH_ROLE(0x7f6cd8157df0)], [VIEW6.XXXXXXX.AUTO_INNER_FLAG(0x7f6cd81580d0)], |
| [VIEW6.XXXXXXX.TRAN_BR_IND(0x7f6cd81583b0)], [VIEW6.XXXXXXX.INTERNAL_CLIENT(0x7f6cd8158690)], [VIEW6.XXXXXXX.COMPANY(0x7f6cd8158970)]) |
| 18 - output([XXXXXXX.BRANCH(0x7f6cd814cee0)], [XXXXXXX.BRANCH_ROLE(0x7f6cd814d1c0)], [XXXXXXX.AUTO_INNER_FLAG(0x7f6cd814d4a0)], [XXXXXXX.TRAN_BR_IND(0x7f6cd8151960)], |
| [XXXXXXX.INTERNAL_CLIENT(0x7f6cd8155e20)], [XXXXXXX.COMPANY(0x7f6cd8156100)]), filter([:3 <= REGEXP_COUNT(cast(XXXXXXX.BRANCH_ROLE(0x7f6cd814d1c0), |
| VARCHAR2(1048576 ))(0x7f556feda370), cast('[^|]+', VARCHAR2(1048576 ))(0x7f6cd80674b0))(0x7f556fedac10)(0x7f556fedb4b0)]) |
| access([XXXXXXX.BRANCH(0x7f6cd814cee0)], [XXXXXXX.BRANCH_ROLE(0x7f6cd814d1c0)], [XXXXXXX.AUTO_INNER_FLAG(0x7f6cd814d4a0)], [XXXXXXX.TRAN_BR_IND(0x7f6cd8151960)], |
| [XXXXXXX.INTERNAL_CLIENT(0x7f6cd8155e20)], [XXXXXXX.COMPANY(0x7f6cd8156100)]), partitions(p0) |
| is_index_back=false, is_global_index=false, filter_before_indexback[false], |
| range_key([XXXXXXX.BRANCH(0x7f6cd814cee0)]), range(MIN ; MAX)always true, |
| range_cond([:4 = XXXXXXX.BRANCH(0x7f6cd814cee0)(0x7f556fedbd70)]) |
| 19 - output(nil), filter(nil) |
| access(nil), partitions(p0) |
| is_index_back=false, is_global_index=true, |
| range_key([C.BASE_ACCT_NO(0x7f6cd80a5d30)], [C.INTERNAL_KEY(0x7f6cd80a3600)]), range(MIN ; MAX), |
| range_cond([C.BASE_ACCT_NO(0x7f6cd80a5d30) = (T_OP_CNN, (T_OP_CNN, :8, :9)(0x7f556ff63dc0), :10)(0x7f556ff648d0)(0x7f556ff653e0)]) |
| Used Hint: |
| ------------------------------------- |
| /*+ |
| |
| PARALLEL(16) |
| */ |
| Qb name trace: |
| ------------------------------------- |
| stmt_id:0, stmt_type:T_EXPLAIN |
| stmt_id:1, SEL$1 > SEL$C1AAFB47 > SEL$D45D735D > SEL$FF87951C |
| stmt_id:2, SEL$2 |
| stmt_id:3, SEL$3 |
| stmt_id:4, SEL$4 |
| stmt_id:5, parent:SEL$2 > SEL$9B6BAA9A |
| stmt_id:6, parent:SEL$2 > SEL$9B6BAA9B |
| stmt_id:7, parent:SEL$9B6BAA9B > SEL$E382C6D8_1 |
| stmt_id:8, parent:SEL$3 > SEL$B648BD05 |
| stmt_id:9, parent:SEL$3 > SEL$B648BD06 |
| stmt_id:10, parent:SEL$B648BD06 > SEL$8174842E_1 |
| Outline Data: |
| ------------------------------------- |
| /*+ |
| BEGIN_OUTLINE_DATA |
| USE_HASH_DISTINCT(@"SEL$FF87951C") |
| LEADING(@"SEL$FF87951C" (("A"@"SEL$1" "B"@"SEL$1") "ENS_CBANK"."C"@"SEL$4")) |
| USE_NL(@"SEL$FF87951C" "ENS_CBANK"."C"@"SEL$4") |
| USE_HASH(@"SEL$FF87951C" "B"@"SEL$1") |
| USE_HASH_DISTINCT(@"SEL$2") |
| LEADING(@"SEL$9B6BAA9A" ("VIEW2"@"SEL$9B6BAA9A" "VIEW3"@"SEL$9B6BAA9A")) |
| USE_NL(@"SEL$9B6BAA9A" "VIEW3"@"SEL$9B6BAA9A") |
| FULL(@"SEL$9B6BAA9B" "ENS_CBANK"."FFFFFF"@"SEL$2") |
| USE_DAS(@"SEL$9B6BAA9B" "ENS_CBANK"."FFFFFF"@"SEL$2") |
| FULL(@"SEL$E382C6D8_1" "ENS_CBANK"."FFFFFF"@"SEL$2") |
| USE_DAS(@"SEL$E382C6D8_1" "ENS_CBANK"."FFFFFF"@"SEL$2") |
| USE_HASH_DISTINCT(@"SEL$3") |
| LEADING(@"SEL$B648BD05" ("VIEW5"@"SEL$B648BD05" "VIEW6"@"SEL$B648BD05")) |
| USE_NL(@"SEL$B648BD05" "VIEW6"@"SEL$B648BD05") |
| FULL(@"SEL$B648BD06" "ENS_CBANK"."XXXXXXX"@"SEL$3") |
| USE_DAS(@"SEL$B648BD06" "ENS_CBANK"."XXXXXXX"@"SEL$3") |
| FULL(@"SEL$8174842E_1" "ENS_CBANK"."XXXXXXX"@"SEL$3") |
| USE_DAS(@"SEL$8174842E_1" "ENS_CBANK"."XXXXXXX"@"SEL$3") |
| INDEX(@"SEL$FF87951C" "C"@"SEL$4" "IDX_CCCCCCC_GLOBAL_INDEX2") |
| USE_DAS(@"SEL$FF87951C" "C"@"SEL$4") |
| SIMPLIFY_ORDER_BY(@"SEL$1") |
| UNNEST(@"SEL$4") |
| MERGE(@"SEL$4" > "SEL$D45D735D") |
| OPTIMIZER_FEATURES_ENABLE('4.2.1.0') |
| END_OUTLINE_DATA |
| */ |
| Optimization Info: |
| ------------------------------------- |
| FFFFFF: |
| table_rows:72 |
| physical_range_rows:72 |
| logical_range_rows:72 |
| index_back_rows:0 |
| output_rows:72 |
| table_dop:1 |
| dop_method:DAS DOP |
| avaiable_index_name:[FFFFFF] |
| stats version:1722575467958265 |
| dynamic sampling level:0 |
| FFFFFF: |
| table_rows:72 |
| physical_range_rows:1 |
| logical_range_rows:1 |
| index_back_rows:0 |
| output_rows:0 |
| table_dop:1 |
| dop_method:DAS DOP |
| avaiable_index_name:[FFFFFF] |
| stats version:1722575467958265 |
| dynamic sampling level:0 |
| XXXXXXX: |
| table_rows:536 |
| physical_range_rows:536 |
| logical_range_rows:536 |
| index_back_rows:0 |
| output_rows:536 |
| table_dop:1 |
| dop_method:DAS DOP |
| avaiable_index_name:[XXXXXXX] |
| stats version:1722575463271440 |
| dynamic sampling level:0 |
| XXXXXXX: |
| table_rows:536 |
| physical_range_rows:1 |
| logical_range_rows:1 |
| index_back_rows:0 |
| output_rows:0 |
| table_dop:1 |
| dop_method:DAS DOP |
| avaiable_index_name:[XXXXXXX] |
| stats version:1722575463271440 |
| dynamic sampling level:0 |
| C: |
| table_rows:17289678 |
| physical_range_rows:2 |
| logical_range_rows:2 |
| index_back_rows:0 |
| output_rows:2 |
| table_dop:1 |
| dop_method:DAS DOP |
| avaiable_index_name:[IDX_CCCCCCC_GLOBAL_INDEX2, IDX_CCCCCCCC_GLOBAL_INDEX3, IDX_CCCCCCCC_LOCAL_INDEX1, IDX_CCCCCCCC_LOCAL_INDEX2, IDX_CCCCCCCC_LOCAL_INDEX3, IDX_CCCCCCCC_LOCAL_INDEX4, IDX_CCCCCCCC_LOCAL_INDEX5, IDX_CCCCCCCC_LOCAL_INDEX6, IDX_CCCCCCCC_LOCAL_INDEX7, CCCCCCCC] |
| pruned_index_name:[IDX_CCCCCCCC_GLOBAL_INDEX3, IDX_CCCCCCCC_LOCAL_INDEX1, IDX_CCCCCCCC_LOCAL_INDEX2, IDX_CCCCCCCC_LOCAL_INDEX3, IDX_CCCCCCCC_LOCAL_INDEX4, IDX_CCCCCCCC_LOCAL_INDEX5, IDX_CCCCCCCC_LOCAL_INDEX6, IDX_CCCCCCCC_LOCAL_INDEX7, CCCCCCCC] |
| stats version:1728378528448689 |
| dynamic sampling level:0 |
| Plan Type: |
| LOCAL |
| Note: |
| Degree of Parallelisim is 1 because stmt contain pl_udf which force das scan |
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
231 rows in set (0.028 sec)主要慢的SQL和计划：
-- 慢的SQL：
SELECT DISTINCT
PROD_TYPE,
ACCT_NAME,
ACCT_CCY,
SEQ_NO,
REGEXP_SUBSTR(BRANCH_ROLE, '[^|]+', 1 , LEVEL) BRANCH_ROLE
FROM FFFFFF
CONNECT BY NOCYCLE LEVEL <= REGEXP_COUNT (BRANCH_ROLE, '[^|]+')
AND PRIOR PROD_TYPE = PROD_TYPE
AND PRIOR DBMS_RANDOM.VALUE IS NOT NULL ORDER BY PROD_TYPE
323 rows in set (10.204 sec)
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Query Plan |
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| ========================================================================================== |
| |ID|OPERATOR |NAME |EST.ROWS|EST.TIME(us)| |
| ------------------------------------------------------------------------------------------ |
| |0 |MERGE DISTINCT | |91 |1580 | |
| |1 |└─SORT | |91 |1579 | |
| |2 | └─SUBPLAN SCAN |VIEW1 |91 |1513 | |
| |3 | └─NESTED-LOOP CONNECT BY | |91 |1513 | |
| |4 | ├─SUBPLAN SCAN |VIEW2 |72 |9 | |
| |5 | │ └─DISTRIBUTED TABLE FULL SCAN |FFFFFF |72 |9 | |
| |6 | └─SUBPLAN SCAN |VIEW3 |1 |21 | |
| |7 | └─DISTRIBUTED TABLE RANGE SCAN|FFFFFF |1 |21 | |
| ========================================================================================== |
| Outputs & filters: |
| ------------------------------------- |
| 0 - output([VIEW1.FFFFFF.PROD_TYPE(0x7f7f40648d50)], [VIEW1.FFFFFF.ACCT_NAME(0x7f7f406498d0)], [VIEW1.FFFFFF.ACCT_CCY(0x7f7f40649030)], |
| [VIEW1.FFFFFF.SEQ_NO(0x7f7f40649310)], [REGEXP_SUBSTR(cast(VIEW1.FFFFFF.BRANCH_ROLE(0x7f7f406495f0), VARCHAR2(1048576 |
| ))(0x7f7f40631730), cast('[^|]+', VARCHAR2(1048576 ))(0x7f7f40632280), 1, VIEW1.LEVEL(0x7f7f40649bb0))(0x7f7f4062ff00)]), filter(nil) |
| distinct([VIEW1.FFFFFF.PROD_TYPE(0x7f7f40648d50)], [VIEW1.FFFFFF.ACCT_NAME(0x7f7f406498d0)], [VIEW1.FFFFFF.ACCT_CCY(0x7f7f40649030)], |
| [VIEW1.FFFFFF.SEQ_NO(0x7f7f40649310)], [REGEXP_SUBSTR(cast(VIEW1.FFFFFF.BRANCH_ROLE(0x7f7f406495f0), VARCHAR2(1048576 |
| ))(0x7f7f40631730), cast('[^|]+', VARCHAR2(1048576 ))(0x7f7f40632280), 1, VIEW1.LEVEL(0x7f7f40649bb0))(0x7f7f4062ff00)]) |
| 1 - output([VIEW1.FFFFFF.PROD_TYPE(0x7f7f40648d50)], [VIEW1.FFFFFF.ACCT_NAME(0x7f7f406498d0)], [VIEW1.FFFFFF.ACCT_CCY(0x7f7f40649030)], |
| [VIEW1.FFFFFF.SEQ_NO(0x7f7f40649310)], [REGEXP_SUBSTR(cast(VIEW1.FFFFFF.BRANCH_ROLE(0x7f7f406495f0), VARCHAR2(1048576 |
| ))(0x7f7f40631730), cast('[^|]+', VARCHAR2(1048576 ))(0x7f7f40632280), 1, VIEW1.LEVEL(0x7f7f40649bb0))(0x7f7f4062ff00)]), filter(nil) |
| sort_keys([VIEW1.FFFFFF.PROD_TYPE(0x7f7f40648d50), ASC], [VIEW1.FFFFFF.ACCT_NAME(0x7f7f406498d0), ASC], [VIEW1.FFFFFF.ACCT_CCY(0x7f7f40649030 |
| ), ASC], [VIEW1.FFFFFF.SEQ_NO(0x7f7f40649310), ASC], [REGEXP_SUBSTR(cast(VIEW1.FFFFFF.BRANCH_ROLE(0x7f7f406495f0), VARCHAR2(1048576 |
| ))(0x7f7f40631730), cast('[^|]+', VARCHAR2(1048576 ))(0x7f7f40632280), 1, VIEW1.LEVEL(0x7f7f40649bb0))(0x7f7f4062ff00), ASC]) |
| 2 - output([VIEW1.FFFFFF.PROD_TYPE(0x7f7f40648d50)], [VIEW1.FFFFFF.ACCT_CCY(0x7f7f40649030)], [VIEW1.FFFFFF.SEQ_NO(0x7f7f40649310)], |
| [VIEW1.FFFFFF.ACCT_NAME(0x7f7f406498d0)], [REGEXP_SUBSTR(cast(VIEW1.FFFFFF.BRANCH_ROLE(0x7f7f406495f0), VARCHAR2(1048576 |
| ))(0x7f7f40631730), cast('[^|]+', VARCHAR2(1048576 ))(0x7f7f40632280), 1, VIEW1.LEVEL(0x7f7f40649bb0))(0x7f7f4062ff00)]), filter(nil) |
| access([VIEW1.FFFFFF.PROD_TYPE(0x7f7f40648d50)], [VIEW1.FFFFFF.ACCT_CCY(0x7f7f40649030)], [VIEW1.FFFFFF.SEQ_NO(0x7f7f40649310)], |
| [VIEW1.FFFFFF.BRANCH_ROLE(0x7f7f406495f0)], [VIEW1.FFFFFF.ACCT_NAME(0x7f7f406498d0)], [VIEW1.LEVEL(0x7f7f40649bb0)]) |
| 3 - output([VIEW3.FFFFFF.PROD_TYPE(0x7f7f40671b50)], [VIEW3.FFFFFF.ACCT_CCY(0x7f7f40671e30)], [VIEW3.FFFFFF.SEQ_NO(0x7f7f40672110)], |
| [VIEW3.FFFFFF.BRANCH_ROLE(0x7f7f406723f0)], [VIEW3.FFFFFF.ACCT_NAME(0x7f7f406726d0)], [LEVEL(0x7f7f40624090)]), filter(nil) |
| conds(nil), nl_params_([LEVEL(0x7f7f40624090)(:0)], [VIEW2.FFFFFF.PROD_TYPE(0x7f7f40670a00)(:1)], [(T_OP_PRIOR, oceanbase.DBMS_RANDOM.VALUE()(0x7f7f4062c380))(0x7f7f40629900)(:2 |
| )]), use_batch=false |
| 4 - output([VIEW2.FFFFFF.PROD_TYPE(0x7f7f40670a00)], [VIEW2.FFFFFF.ACCT_CCY(0x7f7f40670ce0)], [VIEW2.FFFFFF.SEQ_NO(0x7f7f40670fc0)], |
| [VIEW2.FFFFFF.BRANCH_ROLE(0x7f7f406712a0)], [VIEW2.FFFFFF.ACCT_NAME(0x7f7f40671580)]), filter(nil) |
| access([VIEW2.FFFFFF.PROD_TYPE(0x7f7f40670a00)], [VIEW2.FFFFFF.ACCT_CCY(0x7f7f40670ce0)], [VIEW2.FFFFFF.SEQ_NO(0x7f7f40670fc0)], |
| [VIEW2.FFFFFF.BRANCH_ROLE(0x7f7f406712a0)], [VIEW2.FFFFFF.ACCT_NAME(0x7f7f40671580)]) |
| 5 - output([FFFFFF.PROD_TYPE(0x7f7f406290e0)], [FFFFFF.ACCT_CCY(0x7f7f4062f600)], [FFFFFF.SEQ_NO(0x7f7f4062fc00)], |
| [FFFFFF.BRANCH_ROLE(0x7f7f40625b50)], [FFFFFF.ACCT_NAME(0x7f7f4062f000)]), filter(nil) |
| access([FFFFFF.PROD_TYPE(0x7f7f406290e0)], [FFFFFF.ACCT_CCY(0x7f7f4062f600)], [FFFFFF.SEQ_NO(0x7f7f4062fc00)], |
| [FFFFFF.BRANCH_ROLE(0x7f7f40625b50)], [FFFFFF.ACCT_NAME(0x7f7f4062f000)]), partitions(p0) |
| is_index_back=false, is_global_index=false, |
| range_key([FFFFFF.PROD_TYPE(0x7f7f406290e0)], [FFFFFF.ACCT_CCY(0x7f7f4062f600)], [FFFFFF.SEQ_NO(0x7f7f4062fc00)]), |
| range(MIN,MIN,MIN ; MAX,MAX,MAX)always true |
| 6 - output([VIEW3.FFFFFF.PROD_TYPE(0x7f7f40671b50)], [VIEW3.FFFFFF.ACCT_CCY(0x7f7f40671e30)], [VIEW3.FFFFFF.SEQ_NO(0x7f7f40672110)], |
| [VIEW3.FFFFFF.BRANCH_ROLE(0x7f7f406723f0)], [VIEW3.FFFFFF.ACCT_NAME(0x7f7f406726d0)]), filter(nil), startup_filter([:2 |
| IS NOT NULL(0x7f7f407b6c70)]) |
| access([VIEW3.FFFFFF.PROD_TYPE(0x7f7f40671b50)], [VIEW3.FFFFFF.ACCT_CCY(0x7f7f40671e30)], [VIEW3.FFFFFF.SEQ_NO(0x7f7f40672110)], |
| [VIEW3.FFFFFF.BRANCH_ROLE(0x7f7f406723f0)], [VIEW3.FFFFFF.ACCT_NAME(0x7f7f406726d0)]) |
| 7 - output([FFFFFF.PROD_TYPE(0x7f7f4066f8a0)], [FFFFFF.ACCT_CCY(0x7f7f4066fb80)], [FFFFFF.SEQ_NO(0x7f7f4066fe60)], |
| [FFFFFF.BRANCH_ROLE(0x7f7f40670140)], [FFFFFF.ACCT_NAME(0x7f7f40670420)]), filter([:0 <= REGEXP_COUNT(cast(FFFFFF.BRANCH_ROLE(0x7f7f40670140), |
| VARCHAR2(1048576 ))(0x7f7f407b7540), cast('[^|]+', VARCHAR2(1048576 ))(0x7f7f40626a50))(0x7f7f407b7de0)(0x7f7f407b8680)]) |
| access([FFFFFF.PROD_TYPE(0x7f7f4066f8a0)], [FFFFFF.ACCT_CCY(0x7f7f4066fb80)], [FFFFFF.SEQ_NO(0x7f7f4066fe60)], |
| [FFFFFF.BRANCH_ROLE(0x7f7f40670140)], [FFFFFF.ACCT_NAME(0x7f7f40670420)]), partitions(p0) |
| is_index_back=false, is_global_index=false, filter_before_indexback[false], |
| range_key([FFFFFF.PROD_TYPE(0x7f7f4066f8a0)], [FFFFFF.ACCT_CCY(0x7f7f4066fb80)], [FFFFFF.SEQ_NO(0x7f7f4066fe60)]), |
| range(MIN,MIN,MIN ; MAX,MAX,MAX)always true, |
| range_cond([:1 = FFFFFF.PROD_TYPE(0x7f7f4066f8a0)(0x7f7f407b8f40)]) |
| Used Hint: |
| ------------------------------------- |
| /*+ |
| |
| */ |
| Qb name trace: |
| ------------------------------------- |
| stmt_id:0, stmt_type:T_EXPLAIN |
| stmt_id:1, SEL$1 |
| stmt_id:2, parent:SEL$1 > SEL$C07C92B2 |
| stmt_id:3, parent:SEL$1 > SEL$C07C92B3 |
| stmt_id:4, parent:SEL$C07C92B3 > SEL$4DA317D2_1 |
| Outline Data: |
| ------------------------------------- |
| /*+ |
| BEGIN_OUTLINE_DATA |
| LEADING(@"SEL$C07C92B2" ("VIEW2"@"SEL$C07C92B2" "VIEW3"@"SEL$C07C92B2")) |
| USE_NL(@"SEL$C07C92B2" "VIEW3"@"SEL$C07C92B2") |
| FULL(@"SEL$C07C92B3" "ENS_CBANK"."FFFFFF"@"SEL$1") |
| USE_DAS(@"SEL$C07C92B3" "ENS_CBANK"."FFFFFF"@"SEL$1") |
| FULL(@"SEL$4DA317D2_1" "ENS_CBANK"."FFFFFF"@"SEL$1") |
| USE_DAS(@"SEL$4DA317D2_1" "ENS_CBANK"."FFFFFF"@"SEL$1") |
| OPTIMIZER_FEATURES_ENABLE('4.2.1.0') |
| END_OUTLINE_DATA |
| */ |
| Optimization Info: |
| ------------------------------------- |
| FFFFFF: |
| table_rows:72 |
| physical_range_rows:72 |
| logical_range_rows:72 |
| index_back_rows:0 |
| output_rows:72 |
| table_dop:1 |
| dop_method:DAS DOP |
| avaiable_index_name:[FFFFFF] |
| stats version:1722575467958265 |
| dynamic sampling level:0 |
| FFFFFF: |
| table_rows:72 |
| physical_range_rows:1 |
| logical_range_rows:1 |
| index_back_rows:0 |
| output_rows:0 |
| table_dop:1 |
| dop_method:DAS DOP |
| avaiable_index_name:[FFFFFF] |
| stats version:1722575467958265 |
| dynamic sampling level:0 |
| Plan Type: |
| LOCAL |
| Note: |
| Degree of Parallelisim is 1 because stmt contain pl_udf which force das scan |
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
113 rows in set (0.012 sec)这条SQL执行时间跑10秒，慢在 PRIOR DBMS_RANDOM.VALUE IS NOT NULL ORDER BY PROD_TYPE 这段，如果去掉就非常快，毫秒级别出结果。
但是去掉以后返回的结果集数量和没去掉之前差别很大，BRANCH_ROLE 字段存储的内容是 'Role1|Role2|Role3|Role4|Role5' 这种数据格式，行的数据存放到一个列里面。
因为这条SQL没写 START WITH 条件, 我猜开发想实现的逻辑是将父节点和子节点关联成功的前提下，将每行的 BRANCH_ROLE 字段内 'Role1|Role2|Role3|Role4|Role5' 数据拆分成每一行**（REGEXP_SUBSTR(BRANCH_ROLE, '[^|]+', 1 , LEVEL) BRANCH_ROLE）**，才写了个 PRIOR DBMS_RANDOM.VALUE IS NOT NULL 条件，将不确定性带入递归条件中。
只要达到 CONNECT BY NOCYCLE LEVEL <= REGEXP_COUNT (BRANCH_ROLE, '[^|]+') 这个计数器条件以后，就停止递归。
例如：
PROD_TYPE BRANCH_ROLE
1 Role1|Role2|Role3|Role4|Role5
拆成：
PROD_TYPE BRANCH_ROLE
1 Role1
1 Role2
1 Role3
1 Role4
1 Role5假如 PROD_TYPE 有 10行，每行列拆行的情况下，数据会翻倍。
不过开发这个逻辑没写全，我按照他这个逻辑改写一版。
改写SQL（PROD_TYPE 、ACCT_CCY 、SEQ_NO联合主键）：
-- 改写：
SELECT
DISTINCT PROD_TYPE,
ACCT_NAME,
ACCT_CCY,
SEQ_NO,
REGEXP_SUBSTR(BRANCH_ROLE, '[^|]+', 1 , LEVEL) BRANCH_ROLE
FROM FFFFFF
CONNECT BY NOCYCLE LEVEL <= REGEXP_COUNT (BRANCH_ROLE, '[^|]+')
AND PRIOR PROD_TYPE = PROD_TYPE
AND PRIOR ACCT_CCY = ACCT_CCY
AND PRIOR SEQ_NO = SEQ_NO
AND PRIOR DBMS_RANDOM.VALUE IS NOT NULL
323 rows in set (0.058 sec)
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Query Plan |
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| ======================================================================================= |
| |ID|OPERATOR |NAME |EST.ROWS|EST.TIME(us)| |
| --------------------------------------------------------------------------------------- |
| |0 |HASH DISTINCT | |85 |1567 | |
| |1 |└─SUBPLAN SCAN |VIEW1 |85 |1511 | |
| |2 | └─NESTED-LOOP CONNECT BY | |85 |1510 | |
| |3 | ├─SUBPLAN SCAN |VIEW2 |72 |9 | |
| |4 | │ └─DISTRIBUTED TABLE FULL SCAN|FFFFFF |72 |9 | |
| |5 | └─SUBPLAN SCAN |VIEW3 |1 |21 | |
| |6 | └─DISTRIBUTED TABLE GET |FFFFFF |1 |21 | |
| ======================================================================================= |
| Outputs & filters: |
| ------------------------------------- |
| 0 - output([VIEW1.FFFFFF.PROD_TYPE(0x7f59f0c4cd10)], [VIEW1.FFFFFF.ACCT_NAME(0x7f59f0c4d890)], [VIEW1.FFFFFF.ACCT_CCY(0x7f59f0c4cff0)], |
| [VIEW1.FFFFFF.SEQ_NO(0x7f59f0c4d2d0)], [REGEXP_SUBSTR(cast(VIEW1.FFFFFF.BRANCH_ROLE(0x7f59f0c4d5b0), VARCHAR2(1048576 |
| ))(0x7f59f0c351b0), cast('[^|]+', VARCHAR2(1048576 ))(0x7f59f0c35d00), 1, VIEW1.LEVEL(0x7f59f0c4db70))(0x7f59f0c33c90)]), filter(nil) |
| distinct([VIEW1.FFFFFF.PROD_TYPE(0x7f59f0c4cd10)], [VIEW1.FFFFFF.ACCT_NAME(0x7f59f0c4d890)], [VIEW1.FFFFFF.ACCT_CCY(0x7f59f0c4cff0)], |
| [VIEW1.FFFFFF.SEQ_NO(0x7f59f0c4d2d0)], [REGEXP_SUBSTR(cast(VIEW1.FFFFFF.BRANCH_ROLE(0x7f59f0c4d5b0), VARCHAR2(1048576 |
| ))(0x7f59f0c351b0), cast('[^|]+', VARCHAR2(1048576 ))(0x7f59f0c35d00), 1, VIEW1.LEVEL(0x7f59f0c4db70))(0x7f59f0c33c90)]) |
| 1 - output([VIEW1.FFFFFF.PROD_TYPE(0x7f59f0c4cd10)], [VIEW1.FFFFFF.ACCT_CCY(0x7f59f0c4cff0)], [VIEW1.FFFFFF.SEQ_NO(0x7f59f0c4d2d0)], |
| [VIEW1.FFFFFF.BRANCH_ROLE(0x7f59f0c4d5b0)], [VIEW1.FFFFFF.ACCT_NAME(0x7f59f0c4d890)], [VIEW1.LEVEL(0x7f59f0c4db70)]), filter(nil) |
| access([VIEW1.FFFFFF.PROD_TYPE(0x7f59f0c4cd10)], [VIEW1.FFFFFF.ACCT_CCY(0x7f59f0c4cff0)], [VIEW1.FFFFFF.SEQ_NO(0x7f59f0c4d2d0)], |
| [VIEW1.FFFFFF.BRANCH_ROLE(0x7f59f0c4d5b0)], [VIEW1.FFFFFF.ACCT_NAME(0x7f59f0c4d890)], [VIEW1.LEVEL(0x7f59f0c4db70)]) |
| 2 - output([VIEW3.FFFFFF.PROD_TYPE(0x7f59f0c75d50)], [VIEW3.FFFFFF.ACCT_CCY(0x7f59f0c76030)], [VIEW3.FFFFFF.SEQ_NO(0x7f59f0c76310)], |
| [VIEW3.FFFFFF.BRANCH_ROLE(0x7f59f0c765f0)], [VIEW3.FFFFFF.ACCT_NAME(0x7f59f0c768d0)], [LEVEL(0x7f59f0c24ac0)]), filter(nil) |
| conds(nil), nl_params_([LEVEL(0x7f59f0c24ac0)(:0)], [VIEW2.FFFFFF.PROD_TYPE(0x7f59f0c74c00)(:1)], [VIEW2.FFFFFF.ACCT_CCY(0x7f59f0c74ee0)(:2)], |
| [VIEW2.FFFFFF.SEQ_NO(0x7f59f0c751c0)(:3)], [(T_OP_PRIOR, oceanbase.DBMS_RANDOM.VALUE()(0x7f59f0c306d0))(0x7f59f0c2dc50)(:4)]), use_batch=false |
| 3 - output([VIEW2.FFFFFF.PROD_TYPE(0x7f59f0c74c00)], [VIEW2.FFFFFF.ACCT_CCY(0x7f59f0c74ee0)], [VIEW2.FFFFFF.SEQ_NO(0x7f59f0c751c0)], |
| [VIEW2.FFFFFF.BRANCH_ROLE(0x7f59f0c754a0)], [VIEW2.FFFFFF.ACCT_NAME(0x7f59f0c75780)]), filter(nil) |
| access([VIEW2.FFFFFF.PROD_TYPE(0x7f59f0c74c00)], [VIEW2.FFFFFF.ACCT_CCY(0x7f59f0c74ee0)], [VIEW2.FFFFFF.SEQ_NO(0x7f59f0c751c0)], |
| [VIEW2.FFFFFF.BRANCH_ROLE(0x7f59f0c754a0)], [VIEW2.FFFFFF.ACCT_NAME(0x7f59f0c75780)]) |
| 4 - output([FFFFFF.PROD_TYPE(0x7f59f0c29b10)], [FFFFFF.ACCT_CCY(0x7f59f0c2b7a0)], [FFFFFF.SEQ_NO(0x7f59f0c2d430)], |
| [FFFFFF.BRANCH_ROLE(0x7f59f0c26580)], [FFFFFF.ACCT_NAME(0x7f59f0c33350)]), filter(nil) |
| access([FFFFFF.PROD_TYPE(0x7f59f0c29b10)], [FFFFFF.ACCT_CCY(0x7f59f0c2b7a0)], [FFFFFF.SEQ_NO(0x7f59f0c2d430)], |
| [FFFFFF.BRANCH_ROLE(0x7f59f0c26580)], [FFFFFF.ACCT_NAME(0x7f59f0c33350)]), partitions(p0) |
| is_index_back=false, is_global_index=false, |
| range_key([FFFFFF.PROD_TYPE(0x7f59f0c29b10)], [FFFFFF.ACCT_CCY(0x7f59f0c2b7a0)], [FFFFFF.SEQ_NO(0x7f59f0c2d430)]), |
| range(MIN,MIN,MIN ; MAX,MAX,MAX)always true |
| 5 - output([VIEW3.FFFFFF.PROD_TYPE(0x7f59f0c75d50)], [VIEW3.FFFFFF.ACCT_CCY(0x7f59f0c76030)], [VIEW3.FFFFFF.SEQ_NO(0x7f59f0c76310)], |
| [VIEW3.FFFFFF.BRANCH_ROLE(0x7f59f0c765f0)], [VIEW3.FFFFFF.ACCT_NAME(0x7f59f0c768d0)]), filter(nil), startup_filter([:4 |
| IS NOT NULL(0x7f59f0dc46b0)]) |
| access([VIEW3.FFFFFF.PROD_TYPE(0x7f59f0c75d50)], [VIEW3.FFFFFF.ACCT_CCY(0x7f59f0c76030)], [VIEW3.FFFFFF.SEQ_NO(0x7f59f0c76310)], |
| [VIEW3.FFFFFF.BRANCH_ROLE(0x7f59f0c765f0)], [VIEW3.FFFFFF.ACCT_NAME(0x7f59f0c768d0)]) |
| 6 - output([FFFFFF.PROD_TYPE(0x7f59f0c73aa0)], [FFFFFF.ACCT_CCY(0x7f59f0c73d80)], [FFFFFF.SEQ_NO(0x7f59f0c74060)], |
| [FFFFFF.BRANCH_ROLE(0x7f59f0c74340)], [FFFFFF.ACCT_NAME(0x7f59f0c74620)]), filter([:0 <= REGEXP_COUNT(cast(FFFFFF.BRANCH_ROLE(0x7f59f0c74340), |
| VARCHAR2(1048576 ))(0x7f59f0dc4f80), cast('[^|]+', VARCHAR2(1048576 ))(0x7f59f0c27480))(0x7f59f0dc5820)(0x7f59f0dc60c0)]) |
| access([FFFFFF.PROD_TYPE(0x7f59f0c73aa0)], [FFFFFF.ACCT_CCY(0x7f59f0c73d80)], [FFFFFF.SEQ_NO(0x7f59f0c74060)], |
| [FFFFFF.BRANCH_ROLE(0x7f59f0c74340)], [FFFFFF.ACCT_NAME(0x7f59f0c74620)]), partitions(p0) |
| is_index_back=false, is_global_index=false, filter_before_indexback[false], |
| range_key([FFFFFF.PROD_TYPE(0x7f59f0c73aa0)], [FFFFFF.ACCT_CCY(0x7f59f0c73d80)], [FFFFFF.SEQ_NO(0x7f59f0c74060)]), |
| range(MIN,MIN,MIN ; MAX,MAX,MAX)always true, |
| range_cond([:1 = FFFFFF.PROD_TYPE(0x7f59f0c73aa0)(0x7f59f0dc6980)], [:2 = FFFFFF.ACCT_CCY(0x7f59f0c73d80)(0x7f59f0dc7210)], |
| [:3 = FFFFFF.SEQ_NO(0x7f59f0c74060)(0x7f59f0dc7aa0)]) |
| Used Hint: |
| ------------------------------------- |
| /*+ |
| |
| */ |
| Qb name trace: |
| ------------------------------------- |
| stmt_id:0, stmt_type:T_EXPLAIN |
| stmt_id:1, SEL$1 |
| stmt_id:2, parent:SEL$1 > SEL$C07C92B2 |
| stmt_id:3, parent:SEL$1 > SEL$C07C92B3 |
| stmt_id:4, parent:SEL$C07C92B3 > SEL$4DA317D2_1 |
| Outline Data: |
| ------------------------------------- |
| /*+ |
| BEGIN_OUTLINE_DATA |
| USE_HASH_DISTINCT(@"SEL$1") |
| LEADING(@"SEL$C07C92B2" ("VIEW2"@"SEL$C07C92B2" "VIEW3"@"SEL$C07C92B2")) |
| USE_NL(@"SEL$C07C92B2" "VIEW3"@"SEL$C07C92B2") |
| FULL(@"SEL$C07C92B3" "ENS_CBANK"."FFFFFF"@"SEL$1") |
| USE_DAS(@"SEL$C07C92B3" "ENS_CBANK"."FFFFFF"@"SEL$1") |
| FULL(@"SEL$4DA317D2_1" "ENS_CBANK"."FFFFFF"@"SEL$1") |
| USE_DAS(@"SEL$4DA317D2_1" "ENS_CBANK"."FFFFFF"@"SEL$1") |
| OPTIMIZER_FEATURES_ENABLE('4.2.1.0') |
| END_OUTLINE_DATA |
| */ |
| Optimization Info: |
| ------------------------------------- |
| FFFFFF: |
| table_rows:72 |
| physical_range_rows:72 |
| logical_range_rows:72 |
| index_back_rows:0 |
| output_rows:72 |
| table_dop:1 |
| dop_method:DAS DOP |
| avaiable_index_name:[FFFFFF] |
| stats version:1722575467958265 |
| dynamic sampling level:0 |
| FFFFFF: |
| table_rows:72 |
| physical_range_rows:1 |
| logical_range_rows:1 |
| index_back_rows:0 |
| output_rows:0 |
| table_dop:1 |
| dop_method:DAS DOP |
| avaiable_index_name:[FFFFFF] |
| stats version:1722575467958265 |
| dynamic sampling level:0 |
| Plan Type: |
| LOCAL |
| Note: |
| Degree of Parallelisim is 1 because stmt contain pl_udf which force das scan |
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
107 rows in set (0.016 sec)简单点说就是每一行数据展开 BRANCH_ROLE 列内的数据。改写的SQL看得懂就看，看不懂也不多说，说起来又一大堆😁。
改成这样后SQL执行时间降到 58毫秒，优化也算是结束了， XXXXXXX 那段递归不慢不需要优化，因为 BRANCH 是唯一键。
整体SQL速度和执行计划：
SELECT
DISTINCT A.PROD_TYPE,
A.ACCT_NAME,
A.ACCT_CCY,
A.SEQ_NO,
B.BRANCH,
B.INTERNAL_CLIENT,
B.COMPANY
FROM
(
SELECT
DISTINCT PROD_TYPE,
ACCT_NAME,
ACCT_CCY,
SEQ_NO,
REGEXP_SUBSTR(BRANCH_ROLE, '[^|]+', 1 , LEVEL) BRANCH_ROLE
FROM FFFFFF
CONNECT BY NOCYCLE LEVEL <= REGEXP_COUNT (BRANCH_ROLE, '[^|]+')
AND PRIOR PROD_TYPE = PROD_TYPE
AND PRIOR ACCT_CCY = ACCT_CCY
AND PRIOR SEQ_NO = SEQ_NO
AND PRIOR DBMS_RANDOM.VALUE IS NOT NULL
) A ,
(
SELECT
DISTINCT BRANCH,
INTERNAL_CLIENT,
COMPANY,
REGEXP_SUBSTR (BRANCH_ROLE, '[^|]+', 1, LEVEL ) BRANCH_ROLE
FROM XXXXXXX
WHERE AUTO_INNER_FLAG = 'Y'
AND TRAN_BR_IND = 'Y'
CONNECT BY NOCYCLE LEVEL <= REGEXP_COUNT (BRANCH_ROLE, '[^|]+')
AND PRIOR BRANCH = BRANCH
AND PRIOR DBMS_RANDOM.VALUE IS NOT NULL
) B
WHERE A.BRANCH_ROLE = B.BRANCH_ROLE AND NOT EXISTS ( SELECT 1 FROM CCCCCCCC C WHERE C.BASE_ACCT_NO = ( B.BRANCH || A.PROD_TYPE || A.SEQ_NO ))
20 rows in set (0.556 sec)
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Query Plan |
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| =================================================================================================== |
| |ID|OPERATOR |NAME |EST.ROWS|EST.TIME(us)| |
| --------------------------------------------------------------------------------------------------- |
| |0 |HASH DISTINCT | |2323 |63136 | |
| |1 |└─NESTED-LOOP ANTI JOIN | |2323 |61608 | |
| |2 | ├─HASH JOIN | |2323 |13264 | |
| |3 | │ ├─SUBPLAN SCAN |A |85 |1568 | |
| |4 | │ │ └─HASH DISTINCT | |85 |1567 | |
| |5 | │ │ └─SUBPLAN SCAN |VIEW1 |85 |1511 | |
| |6 | │ │ └─NESTED-LOOP CONNECT BY | |85 |1510 | |
| |7 | │ │ ├─SUBPLAN SCAN |VIEW2 |72 |9 | |
| |8 | │ │ │ └─DISTRIBUTED TABLE FULL SCAN|FFFFFF |72 |9 | |
| |9 | │ │ └─SUBPLAN SCAN |VIEW3 |1 |21 | |
| |10| │ │ └─DISTRIBUTED TABLE GET |FFFFFF |1 |21 | |
| |11| │ └─SUBPLAN SCAN |B |313 |11416 | |
| |12| │ └─HASH DISTINCT | |313 |11415 | |
| |13| │ └─SUBPLAN SCAN |VIEW4 |313 |11236 | |
| |14| │ └─NESTED-LOOP CONNECT BY | |626 |11209 | |
| |15| │ ├─SUBPLAN SCAN |VIEW5 |536 |33 | |
| |16| │ │ └─DISTRIBUTED TABLE FULL SCAN|XXXXXXX |536 |32 | |
| |17| │ └─SUBPLAN SCAN |VIEW6 |1 |21 | |
| |18| │ └─DISTRIBUTED TABLE GET |XXXXXXX |1 |21 | |
| |19| └─DISTRIBUTED TABLE RANGE SCAN |C(IDX_CCCCCCC_GLOBAL_INDEX2)|1 |21 | |
| =================================================================================================== |
| Outputs & filters: |
| ------------------------------------- |
| 0 - output([A.PROD_TYPE(0x7f59f0caf5e0)], [A.ACCT_NAME(0x7f59f0cb7c20)], [A.ACCT_CCY(0x7f59f0cbb3a0)], [A.SEQ_NO(0x7f59f0cb2ad0)], [B.BRANCH(0x7f59f0ca9180)], |
| [B.INTERNAL_CLIENT(0x7f59f0cbf580)], [B.COMPANY(0x7f59f0cc5c70)]), filter(nil) |
| distinct([A.PROD_TYPE(0x7f59f0caf5e0)], [A.ACCT_NAME(0x7f59f0cb7c20)], [A.ACCT_CCY(0x7f59f0cbb3a0)], [A.SEQ_NO(0x7f59f0cb2ad0)], [B.BRANCH(0x7f59f0ca9180)], |
| [B.INTERNAL_CLIENT(0x7f59f0cbf580)], [B.COMPANY(0x7f59f0cc5c70)]) |
| 1 - output([A.PROD_TYPE(0x7f59f0caf5e0)], [A.ACCT_NAME(0x7f59f0cb7c20)], [A.ACCT_CCY(0x7f59f0cbb3a0)], [A.SEQ_NO(0x7f59f0cb2ad0)], [B.BRANCH(0x7f59f0ca9180)], |
| [B.INTERNAL_CLIENT(0x7f59f0cbf580)], [B.COMPANY(0x7f59f0cc5c70)]), filter(nil) |
| conds(nil), nl_params_([B.BRANCH(0x7f59f0ca9180)(:10)], [A.PROD_TYPE(0x7f59f0caf5e0)(:11)], [A.SEQ_NO(0x7f59f0cb2ad0)(:12)]), use_batch=false |
| 2 - output([A.PROD_TYPE(0x7f59f0caf5e0)], [A.ACCT_NAME(0x7f59f0cb7c20)], [A.ACCT_CCY(0x7f59f0cbb3a0)], [A.SEQ_NO(0x7f59f0cb2ad0)], [B.BRANCH(0x7f59f0ca9180)], |
| [B.INTERNAL_CLIENT(0x7f59f0cbf580)], [B.COMPANY(0x7f59f0cc5c70)]), filter(nil) |
| equal_conds([A.BRANCH_ROLE(0x7f59f0c8e5f0) = B.BRANCH_ROLE(0x7f59f0c8e8e0)(0x7f59f0c8dea0)]), other_conds(nil) |
| 3 - output([A.BRANCH_ROLE(0x7f59f0c8e5f0)], [A.PROD_TYPE(0x7f59f0caf5e0)], [A.SEQ_NO(0x7f59f0cb2ad0)], [A.ACCT_NAME(0x7f59f0cb7c20)], [A.ACCT_CCY(0x7f59f0cbb3a0)]), filter(nil) |
| access([A.BRANCH_ROLE(0x7f59f0c8e5f0)], [A.PROD_TYPE(0x7f59f0caf5e0)], [A.SEQ_NO(0x7f59f0cb2ad0)], [A.ACCT_NAME(0x7f59f0cb7c20)], [A.ACCT_CCY(0x7f59f0cbb3a0)]) |
| 4 - output([VIEW1.FFFFFF.PROD_TYPE(0x7f59f0ce50b0)], [VIEW1.FFFFFF.ACCT_NAME(0x7f59f0ce5c30)], [VIEW1.FFFFFF.ACCT_CCY(0x7f59f0ce5390)], |
| [VIEW1.FFFFFF.SEQ_NO(0x7f59f0ce5670)], [REGEXP_SUBSTR(cast(VIEW1.FFFFFF.BRANCH_ROLE(0x7f59f0ce5950), VARCHAR2(1048576 |
| ))(0x7f59f0c52a60), cast('[^|]+', VARCHAR2(1048576 ))(0x7f59f0c535b0), 1, VIEW1.LEVEL(0x7f59f0ce5f10))(0x7f59f0c51540)]), filter(nil) |
| distinct([VIEW1.FFFFFF.PROD_TYPE(0x7f59f0ce50b0)], [VIEW1.FFFFFF.ACCT_NAME(0x7f59f0ce5c30)], [VIEW1.FFFFFF.ACCT_CCY(0x7f59f0ce5390)], |
| [VIEW1.FFFFFF.SEQ_NO(0x7f59f0ce5670)], [REGEXP_SUBSTR(cast(VIEW1.FFFFFF.BRANCH_ROLE(0x7f59f0ce5950), VARCHAR2(1048576 |
| ))(0x7f59f0c52a60), cast('[^|]+', VARCHAR2(1048576 ))(0x7f59f0c535b0), 1, VIEW1.LEVEL(0x7f59f0ce5f10))(0x7f59f0c51540)]) |
| 5 - output([VIEW1.FFFFFF.PROD_TYPE(0x7f59f0ce50b0)], [VIEW1.FFFFFF.ACCT_CCY(0x7f59f0ce5390)], [VIEW1.FFFFFF.SEQ_NO(0x7f59f0ce5670)], |
| [VIEW1.FFFFFF.BRANCH_ROLE(0x7f59f0ce5950)], [VIEW1.FFFFFF.ACCT_NAME(0x7f59f0ce5c30)], [VIEW1.LEVEL(0x7f59f0ce5f10)]), filter(nil) |
| access([VIEW1.FFFFFF.PROD_TYPE(0x7f59f0ce50b0)], [VIEW1.FFFFFF.ACCT_CCY(0x7f59f0ce5390)], [VIEW1.FFFFFF.SEQ_NO(0x7f59f0ce5670)], |
| [VIEW1.FFFFFF.BRANCH_ROLE(0x7f59f0ce5950)], [VIEW1.FFFFFF.ACCT_NAME(0x7f59f0ce5c30)], [VIEW1.LEVEL(0x7f59f0ce5f10)]) |
| 6 - output([VIEW3.FFFFFF.PROD_TYPE(0x7f59f0d0e0f0)], [VIEW3.FFFFFF.ACCT_CCY(0x7f59f0d0e3d0)], [VIEW3.FFFFFF.SEQ_NO(0x7f59f0d0e6b0)], |
| [VIEW3.FFFFFF.BRANCH_ROLE(0x7f59f0d0e990)], [VIEW3.FFFFFF.ACCT_NAME(0x7f59f0d0ec70)], [LEVEL(0x7f59f0c42370)]), filter(nil) |
| conds(nil), nl_params_([LEVEL(0x7f59f0c42370)(:0)], [VIEW2.FFFFFF.PROD_TYPE(0x7f59f0d0cfa0)(:1)], [VIEW2.FFFFFF.ACCT_CCY(0x7f59f0d0d280)(:2)], |
| [VIEW2.FFFFFF.SEQ_NO(0x7f59f0d0d560)(:3)], [(T_OP_PRIOR, oceanbase.DBMS_RANDOM.VALUE()(0x7f59f0c4df80))(0x7f59f0c4b500)(:4)]), use_batch=false |
| 7 - output([VIEW2.FFFFFF.PROD_TYPE(0x7f59f0d0cfa0)], [VIEW2.FFFFFF.ACCT_CCY(0x7f59f0d0d280)], [VIEW2.FFFFFF.SEQ_NO(0x7f59f0d0d560)], |
| [VIEW2.FFFFFF.BRANCH_ROLE(0x7f59f0d0d840)], [VIEW2.FFFFFF.ACCT_NAME(0x7f59f0d0db20)]), filter(nil) |
| access([VIEW2.FFFFFF.PROD_TYPE(0x7f59f0d0cfa0)], [VIEW2.FFFFFF.ACCT_CCY(0x7f59f0d0d280)], [VIEW2.FFFFFF.SEQ_NO(0x7f59f0d0d560)], |
| [VIEW2.FFFFFF.BRANCH_ROLE(0x7f59f0d0d840)], [VIEW2.FFFFFF.ACCT_NAME(0x7f59f0d0db20)]) |
| 8 - output([FFFFFF.PROD_TYPE(0x7f59f0c473c0)], [FFFFFF.ACCT_CCY(0x7f59f0c49050)], [FFFFFF.SEQ_NO(0x7f59f0c4ace0)], |
| [FFFFFF.BRANCH_ROLE(0x7f59f0c43e30)], [FFFFFF.ACCT_NAME(0x7f59f0c50c00)]), filter(nil) |
| access([FFFFFF.PROD_TYPE(0x7f59f0c473c0)], [FFFFFF.ACCT_CCY(0x7f59f0c49050)], [FFFFFF.SEQ_NO(0x7f59f0c4ace0)], |
| [FFFFFF.BRANCH_ROLE(0x7f59f0c43e30)], [FFFFFF.ACCT_NAME(0x7f59f0c50c00)]), partitions(p0) |
| is_index_back=false, is_global_index=false, |
| range_key([FFFFFF.PROD_TYPE(0x7f59f0c473c0)], [FFFFFF.ACCT_CCY(0x7f59f0c49050)], [FFFFFF.SEQ_NO(0x7f59f0c4ace0)]), |
| range(MIN,MIN,MIN ; MAX,MAX,MAX)always true |
| 9 - output([VIEW3.FFFFFF.PROD_TYPE(0x7f59f0d0e0f0)], [VIEW3.FFFFFF.ACCT_CCY(0x7f59f0d0e3d0)], [VIEW3.FFFFFF.SEQ_NO(0x7f59f0d0e6b0)], |
| [VIEW3.FFFFFF.BRANCH_ROLE(0x7f59f0d0e990)], [VIEW3.FFFFFF.ACCT_NAME(0x7f59f0d0ec70)]), filter(nil), startup_filter([:4 |
| IS NOT NULL(0x7f6250d5bf70)]) |
| access([VIEW3.FFFFFF.PROD_TYPE(0x7f59f0d0e0f0)], [VIEW3.FFFFFF.ACCT_CCY(0x7f59f0d0e3d0)], [VIEW3.FFFFFF.SEQ_NO(0x7f59f0d0e6b0)], |
| [VIEW3.FFFFFF.BRANCH_ROLE(0x7f59f0d0e990)], [VIEW3.FFFFFF.ACCT_NAME(0x7f59f0d0ec70)]) |
| 10 - output([FFFFFF.PROD_TYPE(0x7f59f0d0be40)], [FFFFFF.ACCT_CCY(0x7f59f0d0c120)], [FFFFFF.SEQ_NO(0x7f59f0d0c400)], |
| [FFFFFF.BRANCH_ROLE(0x7f59f0d0c6e0)], [FFFFFF.ACCT_NAME(0x7f59f0d0c9c0)]), filter([:0 <= REGEXP_COUNT(cast(FFFFFF.BRANCH_ROLE(0x7f59f0d0c6e0), |
| VARCHAR2(1048576 ))(0x7f6250d5c840), cast('[^|]+', VARCHAR2(1048576 ))(0x7f59f0c44d30))(0x7f6250d5d0e0)(0x7f6250d5d980)]) |
| access([FFFFFF.PROD_TYPE(0x7f59f0d0be40)], [FFFFFF.ACCT_CCY(0x7f59f0d0c120)], [FFFFFF.SEQ_NO(0x7f59f0d0c400)], |
| [FFFFFF.BRANCH_ROLE(0x7f59f0d0c6e0)], [FFFFFF.ACCT_NAME(0x7f59f0d0c9c0)]), partitions(p0) |
| is_index_back=false, is_global_index=false, filter_before_indexback[false], |
| range_key([FFFFFF.PROD_TYPE(0x7f59f0d0be40)], [FFFFFF.ACCT_CCY(0x7f59f0d0c120)], [FFFFFF.SEQ_NO(0x7f59f0d0c400)]), |
| range(MIN,MIN,MIN ; MAX,MAX,MAX)always true, |
| range_cond([:1 = FFFFFF.PROD_TYPE(0x7f59f0d0be40)(0x7f6250d5e240)], [:2 = FFFFFF.ACCT_CCY(0x7f59f0d0c120)(0x7f6250d5ead0)], |
| [:3 = FFFFFF.SEQ_NO(0x7f59f0d0c400)(0x7f6250d5f360)]) |
| 11 - output([B.BRANCH_ROLE(0x7f59f0c8e8e0)], [B.BRANCH(0x7f59f0ca9180)], [B.INTERNAL_CLIENT(0x7f59f0cbf580)], [B.COMPANY(0x7f59f0cc5c70)]), filter(nil) |
| access([B.BRANCH_ROLE(0x7f59f0c8e8e0)], [B.BRANCH(0x7f59f0ca9180)], [B.INTERNAL_CLIENT(0x7f59f0cbf580)], [B.COMPANY(0x7f59f0cc5c70)]) |
| 12 - output([VIEW4.XXXXXXX.BRANCH(0x7f59f0d29b70)], [VIEW4.XXXXXXX.INTERNAL_CLIENT(0x7f59f0d2a6f0)], [VIEW4.XXXXXXX.COMPANY(0x7f59f0d2a9d0)], [REGEXP_SUBSTR(cast(VIEW4.XXXXXXX.BRANCH_ROLE(0x7f |
| 59f0d29e50), VARCHAR2(1048576 ))(0x7f59f0c8a3f0), cast('[^|]+', VARCHAR2(1048576 ))(0x7f59f0c8af40), 1, VIEW4.LEVEL(0x7f59f0d2acb0))(0x7f59f0c88bb0)]), filter(nil) |
| distinct([VIEW4.XXXXXXX.BRANCH(0x7f59f0d29b70)], [VIEW4.XXXXXXX.INTERNAL_CLIENT(0x7f59f0d2a6f0)], [VIEW4.XXXXXXX.COMPANY(0x7f59f0d2a9d0)], [REGEXP_SUBSTR(cast(VIEW4.XXXXXXX.BRANCH_ROLE(0x |
| 7f59f0d29e50), VARCHAR2(1048576 ))(0x7f59f0c8a3f0), cast('[^|]+', VARCHAR2(1048576 ))(0x7f59f0c8af40), 1, VIEW4.LEVEL(0x7f59f0d2acb0))(0x7f59f0c88bb0)]) |
| 13 - output([VIEW4.XXXXXXX.BRANCH(0x7f59f0d29b70)], [VIEW4.XXXXXXX.BRANCH_ROLE(0x7f59f0d29e50)], [VIEW4.XXXXXXX.INTERNAL_CLIENT(0x7f59f0d2a6f0)], |
| [VIEW4.XXXXXXX.COMPANY(0x7f59f0d2a9d0)], [VIEW4.LEVEL(0x7f59f0d2acb0)]), filter([VIEW4.XXXXXXX.TRAN_BR_IND(0x7f59f0d2a410) = cast('Y', VARCHAR2(1048576 |
| ))(0x7f59f0c87120)(0x7f59f0c7d700)], [VIEW4.XXXXXXX.AUTO_INNER_FLAG(0x7f59f0d2a130) = cast('Y', VARCHAR2(1048576 ))(0x7f59f0c7c610)(0x7f59f0c72bf0)]) |
| access([VIEW4.XXXXXXX.BRANCH(0x7f59f0d29b70)], [VIEW4.XXXXXXX.BRANCH_ROLE(0x7f59f0d29e50)], [VIEW4.XXXXXXX.AUTO_INNER_FLAG(0x7f59f0d2a130)], |
| [VIEW4.XXXXXXX.TRAN_BR_IND(0x7f59f0d2a410)], [VIEW4.XXXXXXX.INTERNAL_CLIENT(0x7f59f0d2a6f0)], [VIEW4.XXXXXXX.COMPANY(0x7f59f0d2a9d0)], [VIEW4.LEVEL(0x7f59f0d2acb0)]) |
| 14 - output([VIEW6.XXXXXXX.BRANCH(0x7f59f0d5b870)], [VIEW6.XXXXXXX.BRANCH_ROLE(0x7f59f0d5bb50)], [VIEW6.XXXXXXX.AUTO_INNER_FLAG(0x7f59f0d5be30)], |
| [VIEW6.XXXXXXX.TRAN_BR_IND(0x7f59f0d5c110)], [VIEW6.XXXXXXX.INTERNAL_CLIENT(0x7f59f0d5c3f0)], [VIEW6.XXXXXXX.COMPANY(0x7f59f0d5c6d0)], [LEVEL(0x7f59f0c67f60)]), filter(nil) |
| conds(nil), nl_params_([LEVEL(0x7f59f0c67f60)(:5)], [VIEW5.XXXXXXX.BRANCH(0x7f59f0d5a440)(:6)], [(T_OP_PRIOR, oceanbase.DBMS_RANDOM.VALUE()(0x7f59f0c70250))(0x7f59f0c6d7d0)(:7)]), |
| use_batch=false |
| 15 - output([VIEW5.XXXXXXX.BRANCH(0x7f59f0d5a440)], [VIEW5.XXXXXXX.BRANCH_ROLE(0x7f59f0d5a720)], [VIEW5.XXXXXXX.AUTO_INNER_FLAG(0x7f59f0d5aa00)], |
| [VIEW5.XXXXXXX.TRAN_BR_IND(0x7f59f0d5ace0)], [VIEW5.XXXXXXX.INTERNAL_CLIENT(0x7f59f0d5afc0)], [VIEW5.XXXXXXX.COMPANY(0x7f59f0d5b2a0)]), filter(nil) |
| access([VIEW5.XXXXXXX.BRANCH(0x7f59f0d5a440)], [VIEW5.XXXXXXX.BRANCH_ROLE(0x7f59f0d5a720)], [VIEW5.XXXXXXX.AUTO_INNER_FLAG(0x7f59f0d5aa00)], |
| [VIEW5.XXXXXXX.TRAN_BR_IND(0x7f59f0d5ace0)], [VIEW5.XXXXXXX.INTERNAL_CLIENT(0x7f59f0d5afc0)], [VIEW5.XXXXXXX.COMPANY(0x7f59f0d5b2a0)]) |
| 16 - output([XXXXXXX.BRANCH(0x7f59f0c6cfb0)], [XXXXXXX.BRANCH_ROLE(0x7f59f0c69a20)], [XXXXXXX.AUTO_INNER_FLAG(0x7f59f0c73340)], [XXXXXXX.TRAN_BR_IND(0x7f59f0c7de50)], |
| [XXXXXXX.INTERNAL_CLIENT(0x7f59f0c882b0)], [XXXXXXX.COMPANY(0x7f59f0c888b0)]), filter(nil) |
| access([XXXXXXX.BRANCH(0x7f59f0c6cfb0)], [XXXXXXX.BRANCH_ROLE(0x7f59f0c69a20)], [XXXXXXX.AUTO_INNER_FLAG(0x7f59f0c73340)], [XXXXXXX.TRAN_BR_IND(0x7f59f0c7de50)], |
| [XXXXXXX.INTERNAL_CLIENT(0x7f59f0c882b0)], [XXXXXXX.COMPANY(0x7f59f0c888b0)]), partitions(p0) |
| is_index_back=false, is_global_index=false, |
| range_key([XXXXXXX.BRANCH(0x7f59f0c6cfb0)]), range(MIN ; MAX)always true |
| 17 - output([VIEW6.XXXXXXX.BRANCH(0x7f59f0d5b870)], [VIEW6.XXXXXXX.BRANCH_ROLE(0x7f59f0d5bb50)], [VIEW6.XXXXXXX.AUTO_INNER_FLAG(0x7f59f0d5be30)], |
| [VIEW6.XXXXXXX.TRAN_BR_IND(0x7f59f0d5c110)], [VIEW6.XXXXXXX.INTERNAL_CLIENT(0x7f59f0d5c3f0)], [VIEW6.XXXXXXX.COMPANY(0x7f59f0d5c6d0)]), filter(nil), startup_filter([:7 |
| IS NOT NULL(0x7f6442ad9aa0)]) |
| access([VIEW6.XXXXXXX.BRANCH(0x7f59f0d5b870)], [VIEW6.XXXXXXX.BRANCH_ROLE(0x7f59f0d5bb50)], [VIEW6.XXXXXXX.AUTO_INNER_FLAG(0x7f59f0d5be30)], |
| [VIEW6.XXXXXXX.TRAN_BR_IND(0x7f59f0d5c110)], [VIEW6.XXXXXXX.INTERNAL_CLIENT(0x7f59f0d5c3f0)], [VIEW6.XXXXXXX.COMPANY(0x7f59f0d5c6d0)]) |
| 18 - output([XXXXXXX.BRANCH(0x7f59f0d50c40)], [XXXXXXX.BRANCH_ROLE(0x7f59f0d50f20)], [XXXXXXX.AUTO_INNER_FLAG(0x7f59f0d51200)], [XXXXXXX.TRAN_BR_IND(0x7f59f0d556c0)], |
| [XXXXXXX.INTERNAL_CLIENT(0x7f59f0d59b80)], [XXXXXXX.COMPANY(0x7f59f0d59e60)]), filter([:5 <= REGEXP_COUNT(cast(XXXXXXX.BRANCH_ROLE(0x7f59f0d50f20), |
| VARCHAR2(1048576 ))(0x7f6442ada370), cast('[^|]+', VARCHAR2(1048576 ))(0x7f59f0c6a920))(0x7f6442adac10)(0x7f6442adb4b0)]) |
| access([XXXXXXX.BRANCH(0x7f59f0d50c40)], [XXXXXXX.BRANCH_ROLE(0x7f59f0d50f20)], [XXXXXXX.AUTO_INNER_FLAG(0x7f59f0d51200)], [XXXXXXX.TRAN_BR_IND(0x7f59f0d556c0)], |
| [XXXXXXX.INTERNAL_CLIENT(0x7f59f0d59b80)], [XXXXXXX.COMPANY(0x7f59f0d59e60)]), partitions(p0) |
| is_index_back=false, is_global_index=false, filter_before_indexback[false], |
| range_key([XXXXXXX.BRANCH(0x7f59f0d50c40)]), range(MIN ; MAX)always true, |
| range_cond([:6 = XXXXXXX.BRANCH(0x7f59f0d50c40)(0x7f6442adbd70)]) |
| 19 - output(nil), filter(nil) |
| access(nil), partitions(p0) |
| is_index_back=false, is_global_index=true, |
| range_key([C.BASE_ACCT_NO(0x7f59f0ca8e90)], [C.INTERNAL_KEY(0x7f59f0ca6760)]), range(MIN ; MAX), |
| range_cond([C.BASE_ACCT_NO(0x7f59f0ca8e90) = (T_OP_CNN, (T_OP_CNN, :10, :11)(0x7f6442b63dc0), :12)(0x7f6442b648d0)(0x7f6442b653e0)]) |
| Used Hint: |
| ------------------------------------- |
| /*+ |
| |
| */ |
| Qb name trace: |
| ------------------------------------- |
| stmt_id:0, stmt_type:T_EXPLAIN |
| stmt_id:1, SEL$1 > SEL$4A3BEEAA > SEL$B09914F6 |
| stmt_id:2, SEL$2 |
| stmt_id:3, SEL$3 |
| stmt_id:4, SEL$4 |
| stmt_id:5, parent:SEL$2 > SEL$9B6BAA9A |
| stmt_id:6, parent:SEL$2 > SEL$9B6BAA9B |
| stmt_id:7, parent:SEL$9B6BAA9B > SEL$E382C6D8_1 |
| stmt_id:8, parent:SEL$3 > SEL$B648BD05 |
| stmt_id:9, parent:SEL$3 > SEL$B648BD06 |
| stmt_id:10, parent:SEL$B648BD06 > SEL$8174842E_1 |
| Outline Data: |
| ------------------------------------- |
| /*+ |
| BEGIN_OUTLINE_DATA |
| USE_HASH_DISTINCT(@"SEL$B09914F6") |
| LEADING(@"SEL$B09914F6" (("A"@"SEL$1" "B"@"SEL$1") "ENS_CBANK"."C"@"SEL$4")) |
| USE_NL(@"SEL$B09914F6" "ENS_CBANK"."C"@"SEL$4") |
| USE_HASH(@"SEL$B09914F6" "B"@"SEL$1") |
| USE_HASH_DISTINCT(@"SEL$2") |
| LEADING(@"SEL$9B6BAA9A" ("VIEW2"@"SEL$9B6BAA9A" "VIEW3"@"SEL$9B6BAA9A")) |
| USE_NL(@"SEL$9B6BAA9A" "VIEW3"@"SEL$9B6BAA9A") |
| FULL(@"SEL$9B6BAA9B" "ENS_CBANK"."FFFFFF"@"SEL$2") |
| USE_DAS(@"SEL$9B6BAA9B" "ENS_CBANK"."FFFFFF"@"SEL$2") |
| FULL(@"SEL$E382C6D8_1" "ENS_CBANK"."FFFFFF"@"SEL$2") |
| USE_DAS(@"SEL$E382C6D8_1" "ENS_CBANK"."FFFFFF"@"SEL$2") |
| USE_HASH_DISTINCT(@"SEL$3") |
| LEADING(@"SEL$B648BD05" ("VIEW5"@"SEL$B648BD05" "VIEW6"@"SEL$B648BD05")) |
| USE_NL(@"SEL$B648BD05" "VIEW6"@"SEL$B648BD05") |
| FULL(@"SEL$B648BD06" "ENS_CBANK"."XXXXXXX"@"SEL$3") |
| USE_DAS(@"SEL$B648BD06" "ENS_CBANK"."XXXXXXX"@"SEL$3") |
| FULL(@"SEL$8174842E_1" "ENS_CBANK"."XXXXXXX"@"SEL$3") |
| USE_DAS(@"SEL$8174842E_1" "ENS_CBANK"."XXXXXXX"@"SEL$3") |
| INDEX(@"SEL$B09914F6" "C"@"SEL$4" "IDX_CCCCCCC_GLOBAL_INDEX2") |
| USE_DAS(@"SEL$B09914F6" "C"@"SEL$4") |
| UNNEST(@"SEL$4") |
| MERGE(@"SEL$4" > "SEL$4A3BEEAA") |
| OPTIMIZER_FEATURES_ENABLE('4.2.1.0') |
| END_OUTLINE_DATA |
| */ |
| Optimization Info: |
| ------------------------------------- |
| FFFFFF: |
| table_rows:72 |
| physical_range_rows:72 |
| logical_range_rows:72 |
| index_back_rows:0 |
| output_rows:72 |
| table_dop:1 |
| dop_method:DAS DOP |
| avaiable_index_name:[FFFFFF] |
| stats version:1722575467958265 |
| dynamic sampling level:0 |
| FFFFFF: |
| table_rows:72 |
| physical_range_rows:1 |
| logical_range_rows:1 |
| index_back_rows:0 |
| output_rows:0 |
| table_dop:1 |
| dop_method:DAS DOP |
| avaiable_index_name:[FFFFFF] |
| stats version:1722575467958265 |
| dynamic sampling level:0 |
| XXXXXXX: |
| table_rows:536 |
| physical_range_rows:536 |
| logical_range_rows:536 |
| index_back_rows:0 |
| output_rows:536 |
| table_dop:1 |
| dop_method:DAS DOP |
| avaiable_index_name:[XXXXXXX] |
| stats version:1722575463271440 |
| dynamic sampling level:0 |
| XXXXXXX: |
| table_rows:536 |
| physical_range_rows:1 |
| logical_range_rows:1 |
| index_back_rows:0 |
| output_rows:0 |
| table_dop:1 |
| dop_method:DAS DOP |
| avaiable_index_name:[XXXXXXX] |
| stats version:1722575463271440 |
| dynamic sampling level:0 |
| C: |
| table_rows:17289678 |
| physical_range_rows:2 |
| logical_range_rows:2 |
| index_back_rows:0 |
| output_rows:2 |
| table_dop:1 |
| dop_method:DAS DOP |
| avaiable_index_name:[IDX_CCCCCCC_GLOBAL_INDEX2, IDX_CCCCCCCC_GLOBAL_INDEX3, IDX_CCCCCCCC_LOCAL_INDEX1, IDX_CCCCCCCC_LOCAL_INDEX2, IDX_CCCCCCCC_LOCAL_INDEX3, IDX_CCCCCCCC_LOCAL_INDEX4, IDX_CCCCCCCC_LOCAL_INDEX5, IDX_CCCCCCCC_LOCAL_INDEX6, IDX_CCCCCCCC_LOCAL_INDEX7, CCCCCCCC] |
| pruned_index_name:[IDX_CCCCCCCC_GLOBAL_INDEX3, IDX_CCCCCCCC_LOCAL_INDEX1, IDX_CCCCCCCC_LOCAL_INDEX2, IDX_CCCCCCCC_LOCAL_INDEX3, IDX_CCCCCCCC_LOCAL_INDEX4, IDX_CCCCCCCC_LOCAL_INDEX5, IDX_CCCCCCCC_LOCAL_INDEX6, IDX_CCCCCCCC_LOCAL_INDEX7, CCCCCCCC] |
| stats version:1728378528448689 |
| dynamic sampling level:0 |
| Plan Type: |
| LOCAL |
| Note: |
| Degree of Parallelisim is 1 because stmt contain pl_udf which force das scan |
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
230 rows in set (0.027 sec)验证环节：
-- 差集比对:
obclient [YZJ]> SELECT
-> *
-> FROM
-> (
-> SELECT
-> DISTINCT A.PROD_TYPE,
-> A.ACCT_NAME,
-> A.ACCT_CCY,
-> A.SEQ_NO,
-> B.BRANCH,
-> B.INTERNAL_CLIENT,
-> B.COMPANY
-> FROM
-> (
-> SELECT
-> DISTINCT PROD_TYPE,
-> ACCT_NAME,
-> ACCT_CCY,
-> SEQ_NO,
-> REGEXP_SUBSTR(BRANCH_ROLE, '[^|]+', 1 , LEVEL) BRANCH_ROLE
-> FROM FFFFFF
-> CONNECT BY NOCYCLE LEVEL <= REGEXP_COUNT (BRANCH_ROLE, '[^|]+')
-> AND PRIOR PROD_TYPE = PROD_TYPE
-> AND PRIOR ACCT_CCY = ACCT_CCY
-> AND PRIOR SEQ_NO = SEQ_NO
-> AND PRIOR DBMS_RANDOM.VALUE IS NOT NULL
-> ) A,
-> (
-> SELECT
-> DISTINCT BRANCH,
-> INTERNAL_CLIENT,
-> COMPANY,
-> REGEXP_SUBSTR (BRANCH_ROLE, '[^|]+', 1, LEVEL) BRANCH_ROLE
-> FROM
-> XXXXXXX
-> WHERE
-> AUTO_INNER_FLAG = 'Y'
-> AND TRAN_BR_IND = 'Y'
-> CONNECT BY
-> NOCYCLE LEVEL <= REGEXP_COUNT (BRANCH_ROLE, '[^|]+')
-> AND PRIOR BRANCH = BRANCH
-> AND PRIOR DBMS_RANDOM.VALUE IS NOT NULL
-> ) B
-> WHERE
-> A.BRANCH_ROLE = B.BRANCH_ROLE
-> AND NOT EXISTS (
-> SELECT
-> 1
-> FROM
-> CCCCCCCC C
-> WHERE
-> C.BASE_ACCT_NO = (B.BRANCH || A.PROD_TYPE || A.SEQ_NO)
-> )
-> ) MINUS
-> SELECT
-> *
-> FROM
-> (
-> SELECT
-> /*+ parallel(16) */
-> DISTINCT A.PROD_TYPE,
-> A.ACCT_NAME,
-> A.ACCT_CCY,
-> A.SEQ_NO,
-> B.BRANCH,
-> B.INTERNAL_CLIENT,
-> B.COMPANY
-> FROM
-> (
-> SELECT
-> DISTINCT PROD_TYPE,
-> ACCT_NAME,
-> ACCT_CCY,
-> SEQ_NO,
-> REGEXP_SUBSTR(BRANCH_ROLE, '[^|]+', 1, LEVEL) BRANCH_ROLE
-> FROM
-> FFFFFF
-> CONNECT BY
-> NOCYCLE LEVEL <= REGEXP_COUNT (BRANCH_ROLE, '[^|]+')
-> AND PRIOR PROD_TYPE = PROD_TYPE
-> AND PRIOR DBMS_RANDOM.VALUE IS NOT NULL
-> ORDER BY
-> PROD_TYPE
-> ) A,
-> (
-> SELECT
-> DISTINCT BRANCH,
-> INTERNAL_CLIENT,
-> COMPANY,
-> REGEXP_SUBSTR (BRANCH_ROLE, '[^|]+', 1, LEVEL) BRANCH_ROLE
-> FROM
-> XXXXXXX
-> WHERE
-> AUTO_INNER_FLAG = 'Y'
-> AND TRAN_BR_IND = 'Y'
-> CONNECT BY
-> NOCYCLE LEVEL <= REGEXP_COUNT (BRANCH_ROLE, '[^|]+')
-> AND PRIOR BRANCH = BRANCH
-> AND PRIOR DBMS_RANDOM.VALUE IS NOT NULL
-> ORDER BY
-> BRANCH
-> ) B
-> WHERE
-> A.BRANCH_ROLE = B.BRANCH_ROLE
-> AND NOT EXISTS (
-> SELECT
-> 1
-> FROM
-> CCCCCCCC C
-> WHERE
-> C.BASE_ACCT_NO = (B.BRANCH || A.PROD_TYPE || A.SEQ_NO)
-> )
-> )
->
-> ;
Empty set (10.756 sec)差集比对后是等价的，我换过几个条件试过都是这样，只能说业务开发想实现的逻辑没写全，我给完善了下。、
其实还有个更简单，更激进的写法，速度比上面我改写的更快，考虑到金融行业的严谨性，没敢给。
SELECT DISTINCT
PROD_TYPE,
ACCT_NAME,
ACCT_CCY,
SEQ_NO,
REGEXP_SUBSTR(BRANCH_ROLE, '[^|]+', 1, LEVEL) BRANCH_ROLE
FROM FFFFFF
CONNECT BY LEVEL <= REGEXP_COUNT(BRANCH_ROLE, '[^|]+');PG好像也有个函数能实现这种逻辑，速度直接秒杀，不过哥忘了。