WITH AS 优化逻辑读
2013-12-31 08:50
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SQL> select * from fxqd_list_20131115_new where (acct_no, oper_no, seqno, trans_amt) not in (select acct_no, oper_no, seqno, trans_amt from fxqd_list where reg_date = to_date('20131115', 'yyyymmdd')) and list_type = '1'; 2 3 4 5 6 7 103 rows selected. Execution Plan ---------------------------------------------------------- Plan hash value: 196590019 ------------------------------------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ------------------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | 4145 | 10M| 13079 (1)| 00:02:37 | |* 1 | FILTER | | | | | | |* 2 | TABLE ACCESS FULL | FXQD_LIST_20131115_NEW | 4145 | 10M| 180 (2)| 00:00:03 | |* 3 | TABLE ACCESS BY INDEX ROWID| FXQD_LIST | 2036 | 157K| 4 (0)| 00:00:01 | |* 4 | INDEX RANGE SCAN | FXQD_LIST_IDX_1 | 2500 | | 3 (0)| 00:00:01 | ------------------------------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 1 - filter( NOT EXISTS (SELECT /*+ */ 0 FROM "FXQD_LIST" "FXQD_LIST" WHERE "REG_DATE"=TO_DATE(' 2013-11-15 00:00:00', 'syyyy-mm-dd hh24:mi:ss') AND LNNVL("ACCT_NO"<>:B1) AND LNNVL("OPER_NO"<>:B2) AND LNNVL("SEQNO"<>:B3) AND LNNVL("TRANS_AMT"<>:B4))) 2 - filter("LIST_TYPE"='1') 3 - filter(LNNVL("ACCT_NO"<>:B1) AND LNNVL("OPER_NO"<>:B2) AND LNNVL("SEQNO"<>:B3) AND LNNVL("TRANS_AMT"<>:B4)) 4 - access("REG_DATE"=TO_DATE(' 2013-11-15 00:00:00', 'syyyy-mm-dd hh24:mi:ss')) Note ----- - dynamic sampling used for this statement Statistics ---------------------------------------------------------- 3505 recursive calls 2 db block gets 1564672 consistent gets 0 physical reads 0 redo size 43694 bytes sent via SQL*Net to client 558 bytes received via SQL*Net from client 8 SQL*Net roundtrips to/from client 16 sorts (memory) 0 sorts (disk) 103 rows processed SQL> with D as (select /*+materialize*/ acct_no, oper_no, seqno, trans_amt from fxqd_list where reg_date = to_date('20131115', 'yyyymmdd')) select * from fxqd_list_20131115_new where (acct_no, oper_no, seqno, trans_amt) not in (select acct_no, oper_no, seqno, trans_amt from D) and list_type = '1'; 2 3 4 5 6 103 rows selected. Execution Plan ---------------------------------------------------------- Plan hash value: 1295716977 ------------------------------------------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ------------------------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | 4145 | 10M| 26570 (1)| 00:05:19 | | 1 | TEMP TABLE TRANSFORMATION | | | | | | | 2 | LOAD AS SELECT | FXQD_LIST_20131115_NEW | | | | | | 3 | TABLE ACCESS BY INDEX ROWID| FXQD_LIST | 2500 | 192K| 389 (1)| 00:00:05 | |* 4 | INDEX RANGE SCAN | FXQD_LIST_IDX_1 | 2500 | | 10 (0)| 00:00:01 | |* 5 | FILTER | | | | | | |* 6 | TABLE ACCESS FULL | FXQD_LIST_20131115_NEW | 4145 | 10M| 180 (2)| 00:00:03 | |* 7 | VIEW | | 2500 | 170K| 8 (0)| 00:00:01 | | 8 | TABLE ACCESS FULL | SYS_TEMP_0FD9D66DD_A4F53A1D | 2500 | 170K| 8 (0)| 00:00:01 | ------------------------------------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 4 - access("REG_DATE"=TO_DATE(' 2013-11-15 00:00:00', 'syyyy-mm-dd hh24:mi:ss')) 5 - filter( NOT EXISTS (SELECT /*+ */ 0 FROM (SELECT /*+ CACHE_TEMP_TABLE ("T1") */ "C0" "ACCT_NO","C1" "OPER_NO","C2" "SEQNO","C3" "TRANS_AMT" FROM "SYS"."SYS_TEMP_0FD9D66DD_A4F53A1D" "T1") "D" WHERE LNNVL("ACCT_NO"<>:B1) AND LNNVL("OPER_NO"<>:B2) AND LNNVL("SEQNO"<>:B3) AND LNNVL("TRANS_AMT"<>:B4))) 6 - filter("LIST_TYPE"='1') 7 - filter(LNNVL("ACCT_NO"<>:B1) AND LNNVL("OPER_NO"<>:B2) AND LNNVL("SEQNO"<>:B3) AND LNNVL("TRANS_AMT"<>:B4)) Note ----- - dynamic sampling used for this statement Statistics ---------------------------------------------------------- 2365 recursive calls 64 db block gets 124525 consistent gets 55 physical reads 1516 redo size 43694 bytes sent via SQL*Net to client 558 bytes received via SQL*Net from client 8 SQL*Net roundtrips to/from client 46 sorts (memory) 0 sorts (disk) 103 rows processed
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