32.23',TO_DATE('2015-08-01','YYYY-MM-DD'),NULL); commit;
4.2.4、查看数据
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查看分区数据
select * from LST_RNG_RANGE partition(P_3512860010);
select * from LST_RNG_RANGE partition(P_3512860005);
select * from LST_RNG_RANGE subpartition(P_3512860010_SP_20150726);
select * from LST_RNG_RANGE subpartition(P_3512860005_SP_20150726);
select * from LST_RNG_RANGE subpartition(P_3512860010_SP_20150802);
select * from LST_RNG_RANGE subpartition(P_3512860005_SP_20150802);
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收集分区统计信息
begin
dbms_stats.gather_table_stats(ownname=>'WKOD_VERIFY',granularity =>'all',tabname=>'LST_RNG_RANGE',cascade=>true);
end;
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查看主分组
select partition_position,table_name,partition_name,high_value,tablespace_name,num_rows
from user_tab_partitions
where table_name='LST_RNG_RANGE';
num_rows=5，LST_PNG_RANGE表的两个主分区在当前用户所在的表空间中有各5条数据
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查看子分区
select subpartition_position,table_name,partition_name,subpartition_name,high_value,tablespace_name,num_rows
from user_tab_subpartitions
where table_name='LST_RNG_RANGE';
![\]()
4.2.5、追加分区
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方式一：追加主分区
alter table LST_RNG_RANGE add partition P_3512834993 values ('3512834993')
查看分区
select partition_position,table_name,partition_name,high_value,tablespace_name,num_rows
from user_tab_partitions
where table_name='LST_RNG_RANGE';
主分区所属表空间为当前用户所在的表空间
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查看子分区
select subpartition_position,table_name,partition_name,subpartition_name,high_value,tablespace_name,num_rows
from user_tab_subpartitions
where table_name='LST_RNG_RANGE';
默认按照表创建时子分区的的分区规则，自动生成两个子分区（红色框内），且分区对应表空间与原来一致
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删除添加的List分区
alter table LST_RNG_RANGE drop partition P_3512834993;
对应的子分区会自动被drop掉。
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方式二：追加主分区及其子分区
alter table LST_RNG_RANGE add partition P_3512834993 values ('3512834993')
(subpartition P_3512834993_SP_20150802 values less than (TO_DATE('2015-08-02','YYYY-MM-DD')) tablespace TS_20150809)
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查看分区
select partition_position,table_name,partition_name,high_value,tablespace_name,num_rows
from user_tab_partitions
where table_name='LST_RNG_RANGE';
主分区所属表空间为当前用户所在的表空间
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查看子分区
select subpartition_position,table_name,partition_name,subpartition_name,high_value,tablespace_name,num_rows
from user_tab_subpartitions
where table_name='LST_RNG_RANGE';
按照设定的子分区所属的表空间创建range子分区
4.3、两个List一个Range测试
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drop table LST_RNG_RANGE cascade constraints;
/*==============================================================*/
/* Table:LST_RNG_RANGE */
/*==============================================================*/
create table LST_RNG_RANGE
(
AUTO_ID VARCHAR2(36) not null,
SALE_NO VARCHAR2(36) not null,
POS_CODE VARCHAR2(10),
POS_NAME VARCHAR2(30),
TOTAL_AMOUNT NUMBER(18,2),
SALE_DATE DATE,
REMARK VARCHAR2(500),
constraint PK_LST_RNG_RANGEprimary key (AUTO_ID)
)
partition by list
(POS_CODE)
subpartition by range
(SALE_DATE)
subpartition template (
subpartition SP_20150726
values less than (TO_DATE('2015-07-26','YYYY-MM-DD'))
tablespace TS_20150726
)
(
partition
P_3512860010
values ('3512860010'),
partition
P_3512860005
values ('3512860005')
);
comment on column LST_RNG_RANGE.AUTO_ID is
'自动编号';
commen