Oracle 表分區操作，表分區一天爲分區創建，表分區數據查詢，以及刪除表分區數據自動重建索引

表分區創建，按天進行分區。

create table T_REALTIME_GPS_PARTCAR_HIS

(
  id            VARCHAR2(50) default sys_guid() not null,
  devphone      VARCHAR2(50),
  f_car_no      VARCHAR2(32),
  longitude     VARCHAR2(50),
  latitude      VARCHAR2(50),
  send_datetime VARCHAR2(50),
  depcode       VARCHAR2(32),
  personid      VARCHAR2(32),
  depid         VARCHAR2(32),
  sjly          VARCHAR2(10),
  djsj          TIMESTAMP(6) default systimestamp,
  lyid          VARCHAR2(200),
  state         VARCHAR2(1),
  omspersonid   VARCHAR2(32)
)
--一天爲單位創建分區
partition by range(djsj)
interval (numtodsinterval(1,'day'))
(
 partition PART_REALTIME190331 values less than (to_date('2019-03-31','yyyy-mm-dd'))
);
-- Add comments to the columns 
comment on column T_REALTIME_GPS_PARTCAR_HIS.devphone
  is '設備SIM卡號';
comment on column T_REALTIME_GPS_PARTCAR_HIS.f_car_no
  is '車牌號';
comment on column T_REALTIME_GPS_PARTCAR_HIS.longitude
  is '經度';
comment on column T_REALTIME_GPS_PARTCAR_HIS.latitude
  is '緯度';
comment on column T_REALTIME_GPS_PARTCAR_HIS.send_datetime
  is '發送時間';
-- Create/Recreate primary, unique and foreign key constraints 
alter table T_REALTIME_GPS_PARTCAR_HIS
  add primary key (ID)
  using index 
  tablespace ZYML
  pctfree 10
  initrans 2
  maxtrans 255
  storage
  (
    initial 64K
    next 1M
    minextents 1
    maxextents unlimited
  );

Oracle 表分區查詢操作，以及刪除表分區數據自動重建索引

--查指定分區下數據
SELECT COUNT(*) FROM  T_REALTIME_GPS_PARTCAR_HIS PARTITION(partname);

--查看錶分區
select table_name,partition_name from user_tab_partitions where table_name='tablename';

--根據表分區時間查詢
SELECT * FROM  T_REALTIME_GPS_PARTCAR_HIS  partition  for(to_date('2019-05-16','yyyy-mm-dd')) t  WHERE t.license_plate_num='魯AM****' ORDER BY t.send_datetime DESC;

  
--刪除分區,數據也自動刪除
alter table tableName DROP PARTITION partionName update indexes;  

--只刪除數據
alter table tableName TRUNCATE PARTITION partionName;