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  • FILTER 循环

    
    
    SQL*Plus: Release 11.2.0.4.0 Production on ?..涓€ 4?.13 17:19:55 2020
    
    Copyright (c) 1982, 2013, Oracle.  All rights reserved.
    
    
    Connected to:
    Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
    With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
    Advanced Analytics and Real Application Testing options
    
    SQL> set linesize 200
    SQL> set pagesize 200
    SQL> alter session set statistics_level=all;
    
    Session altered.
    
    SQL> SELECT
      2       AUDIT_ID
      3  FROM
      4       (
      5            SELECT
      6                 PMP_AUDIT_INFO.*, PMP_AUDIT_STEP_INFO.AUDIT_OPR_NO AUDIT_OPR_NO
      7            FROM
      8                 PMP_AUDIT_INFO
      9            JOIN PMP_AUDIT_STEP_INFO ON PMP_AUDIT_INFO.AUDIT_ID = PMP_AUDIT_STEP_INFO.AUDIT_ID
    10            WHERE
    11                 audit_desc = (
    12                      SELECT
    13                           AUDIT_DESC
    14                      FROM
    15                           PMP_AUDIT_INFO
    16                      WHERE
    17                           AUDIT_ID = (
    18                                SELECT
    19                                     AUDIT_ID
    20                                FROM
    21                                     PBS_MCHT_CONTR_INFO_TMP
    22                                WHERE
    23                                     INSTR (AUDIT_OPR_NO, ',') > 0
    24                                AND MCHT_ID = '8201912110101330'
    25                           )
    26  )
    27  AND PMP_AUDIT_INFO.AUDIT_STATE = '02'
    28  ORDER BY
    29       APPLY_DATE_TIME DESC
    30  );
    
    AUDIT_ID
    ------------------------------------------------------------------------------------------------
    82019121115385839024658765686186
    82019121115350687655705785226563
    
    SQL> select * from table(dbms_xplan.display_cursor(null,null,'ALLSTATS LAST'));
    
    PLAN_TABLE_OUTPUT
    --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
    SQL_ID cm1wtzxv1z276, child number 0
    -------------------------------------
    SELECT     AUDIT_ID FROM      (    SELECT
    PMP_AUDIT_INFO.*, PMP_AUDIT_STEP_INFO.AUDIT_OPR_NO AUDIT_OPR_NO
      FROM       PMP_AUDIT_INFO        JOIN PMP_AUDIT_STEP_INFO
    ON PMP_AUDIT_INFO.AUDIT_ID = PMP_AUDIT_STEP_INFO.AUDIT_ID
    WHERE      audit_desc = ( SELECT
     AUDIT_DESC        FROM
         PMP_AUDIT_INFO WHERE
    AUDIT_ID = (    SELECT
          AUDIT_ID     FROM
         PBS_MCHT_CONTR_INFO_TMP
      WHERE     INSTR (AUDIT_OPR_NO, ',') >
    0 AND MCHT_ID = '8201912110101330'
       ) ) AND PMP_AUDIT_INFO.AUDIT_STATE = '02' ORDER BY
      APPLY_DATE_TIME DESC )
    
    Plan hash value: 199291123
    
    -------------------------------------------------------------------------------------------------------------------------------------------------------
    | Id  | Operation       | Name | Starts | E-Rows | A-Rows |   A-Time | Buffers | Reads  |  OMem |  1Mem | Used-Mem |
    -------------------------------------------------------------------------------------------------------------------------------------------------------
    |   0 | SELECT STATEMENT       |  |      1 |   |  2 |00:03:09.69 |      69M|  1 |    |    |       |
    |   1 |  SORT ORDER BY       |  |      1 | 1 |  2 |00:03:09.69 |      69M|  1 |  2048 |  2048 | 2048  (0)|
    |*  2 |   FILTER       |  |      1 |   |  2 |00:03:09.69 |      69M|  1 |    |    |       |
    |*  3 |    HASH JOIN       |  |      1 |  50548 |  51490 |00:00:00.24 |    7053 |  0 |  7355K|  2379K| 8630K (0)|
    |*  4 |     TABLE ACCESS FULL       | PMP_AUDIT_INFO |      1 |  50179 |  51490 |00:00:00.02 |    4031 |  0 |    |    |       |
    |   5 |     TABLE ACCESS FULL       | PMP_AUDIT_STEP_INFO |      1 |    167K|    172K|00:00:00.05 |    3022 |  0 |    |    |       |
    |   6 |    TABLE ACCESS BY INDEX ROWID| PMP_AUDIT_INFO |  24883 | 1 |  24598 |00:03:09.36 |      69M|  1 |    |    |       |
    |*  7 |     INDEX UNIQUE SCAN       | PK_PMP_AUDIT_INFO |  24883 | 1 |  24598 |00:03:09.27 |      69M|  1 |    |    |       |
    |*  8 |      FILTER       |  |  16054 |   |  15871 |00:03:09.13 |      69M|  0 |    |    |       |
    |*  9 |       TABLE ACCESS FULL       | PBS_MCHT_CONTR_INFO_TMP |  15871 | 1 |  15871 |00:03:09.07 |      69M|  0 |    |    |       |
    -------------------------------------------------------------------------------------------------------------------------------------------------------
    
    Predicate Information (identified by operation id):
    ---------------------------------------------------
    
       2 - filter("PMP_AUDIT_INFO"."AUDIT_DESC"=)
       3 - access("PMP_AUDIT_INFO"."AUDIT_ID"="PMP_AUDIT_STEP_INFO"."AUDIT_ID")
       4 - filter("PMP_AUDIT_INFO"."AUDIT_STATE"='02')
       7 - access("AUDIT_ID"=)
       8 - filter(INSTR(:B1,',')>0)
       9 - filter("MCHT_ID"='8201912110101330')
    
    
    44 rows selected.
    
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  • 原文地址:https://www.cnblogs.com/hzcya1995/p/13348434.html
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