oracle分區(qū)表學(xué)習(xí)及應(yīng)用
2024-08-29 13:30:29
供稿：網(wǎng)友
，歡迎訪問網(wǎng)頁設(shè)計愛好者web開發(fā)。-- create table(創(chuàng)建分區(qū)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; --增加分區(qū)表 alter table bill_monthfee_zero add partition p_200409
values less than (200409) tablespace ts_ziken;
--刪除一分區(qū)
alter table part_tbl drop partition part_tbl_08; --將一個分區(qū)分為兩個分區(qū)
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); --合并分區(qū)
alter table bill_monthfee_zero
merge partitions p_200408, p_200409 into partition p_all --將分區(qū)改名alter table bill_monthfee_zero rename partition p_200408 to p_fee_200408 --將分區(qū)改表空間alter table bill_monthfee_zero move partition p_200409
tablespace ts_ziken_01 nologging --查詢特定分區(qū)
select count(*) from bill_monthfee_zero partition (p_200407); --添加數(shù)據(jù)
insert into bill_monthfee_zero select * from bill_monthfee_zero partition (p_200407) --分區(qū)表的導(dǎo)出userid=dxsq/[email protected]
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：刪除表中一個字段：alter table bill_monthfee_zero set unused column date_type;添加一個字段：alter table bill_monthfee_zero add date_type number(1);
