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  • oracle分区表学习及应用

         oracle分区表学习及应用

    -- Create table(创建分区表)
    create table BILL_MONTHFEE_ZERO
    (
      SERV_ID             NUMBER(20) not null,
      BILLING_CYCLE_MONTH NUMBER(6) not null,
      DATE_TYPE           NUMBER(1),
      ACC_NBR             VARCHAR2(80)
    )
     partition by range (BILLING_CYCLE_MONTH)
      (partition p_200407 values less than (200407)
        tablespace TS_ZIKEN
          storage(initial 100k next 100k minextents 1 maxextents unlimited pctincrease 0),
       partition p_200408 values less than (200408)
        tablespace TS_ZIKEN
          storage(initial 100k next 100k minextents 1 maxextents unlimited pctincrease 0))
          ;
    create index idx_bill_monthfee_zero_idx01 on bill_monthfee_zero(billing_cycle_month)
    tablespace TS_ZIKEN_idx
    storage(initial 100k next 100k minextents 1 maxextents unlimited pctincrease 0) nologging;
    grant all on bill_monthfee_zero to dxsq_dev;

    --增加分区表

    alter table BILL_MONTHFEE_ZERO add Partition p_200409
    values less than (200409) tablespace ts_ziken;


    --
    删除一分区
    alter table part_tbl drop Partition part_tbl_08;

    --将一个分区分为两个分区
    alter table bill_monthfee_zero split Partition p_200409 at (200409)
    into (Partition p_200409_1 tablespace ts_ziken,
    Partition p_200409_2 tablespace ts_ziken_idx);

    --合并分区
    ALTERTABLE bill_monthfee_zero
      
    MERGE PARTITIONS p_200408, p_200409 INTOPARTITION p_all

    --将分区改名

    altertable bill_monthfee_zero rename Partition p_200408 to p_fee_200408

    --将分区改表空间

    altertable bill_monthfee_zero move Partition p_200409
    tablespace ts_ziken_01 nologging

    --查询特定分区
    select count(*) from BILL_MONTHFEE_ZERO partition (p_200407);

    --添加数据
    insert into bill_monthfee_zero select * from bill_monthfee_zero partition (p_200407)

    --分区表的导出

    userid=dxsq/teledoone@jndxsq154
    buffer=102400
    tables=bill_monthfee:P_200401,
    file=E:"exp_para"exp_dxsq_tables.dmp
    log=E:"exp_para"exp_dxsq_tables.log

    技巧:

    删除表中一个字段:

    alter table bill_monthfee_zero set unused column date_type;

    添加一个字段:alter table bill_monthfee_zero add date_type number(1);

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  • 原文地址:https://www.cnblogs.com/jimeper/p/877776.html
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