1CREATETABLErange_example(2range_key_column DATE,3DATAVARCHAR2(20),4IDinteger5) PARTITIONBYRANGE(range_key_column)6(7PARTITION part01VALUESLESS THAN (TO_DATE('2008-07-1 00:00:00','yyyy-mm-dd hh24:mi:ss')) TABLESPACE tbs01,8PARTITION part02VALUESLESS THAN (TO_DATE('2008-08-1 00:...
2. Tables containing historical data, in which new data is added into the newest partition. A typical example is a historical table where only the current month's data is updatable and the other 11 months are read only.(新数据均加入至最新分区中的用于存储历史数据的表) 三:分区带来的好处 1....
1. Tables greater than 2GB should always be considered for partitioning.(表数据量大于2GB时应该考虑使用分区) 2. Tables containing historical data, in which new data is added into the newest partition. A typical example is a historical table where only the current month's data is updatable and...
1)partition table example01 exchange partition 1@@@Moving Data from staging table into fact table. @@@ @@@<1>create tbs for index and table. @@@ @@@I use 8k a block, 8k*8=64k, 8k*5=40k, so I use 8 blocks for table storage @@@and use 5 blocks for index storage. SYS@ocp>...
When to Partition a Table(什么时候需要分区表)、官网的2个建议如下: · Tables greater than 2GB should always be considered for partitioning. · Tables containing historical data, in which new data is added into the newest partition. A typical example is a historical table where only the current...
alter table emp_part move partition p2 tablespace example; 注:如果是将分区表从一个表空间移动到另外一个表空间,使用下面的语法: alter table owner.table_name move partition partition_name [tablespace tablespace_name]; 分区表的管理:分区更名(RENAME) ...
PARTITION part12 VALUES LESS THAN (TO_DATE('2021-12-1 00:00:00','yyyy-mm-dd hh24:mi:ss')) TABLESPACE tbs012 ); 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 3.插入数据 insert into rangeExample values ('2021-01-1 06:00:00',1,1);...
tables containing historical data, in which new data is added into the newest partition. A typical example is a historical table where only the current month’s data is updatable and the other 11 months ar read only. 分区表的种类 范围分区 ...
subpartition by hash(C2) subpartitions 2 store in (EXAMPLE) ( partition P100 values less than(100) ( subpartition ,subpartition RANGE_HASH1_SP1 ,subpartition RANGE_HASH1_SP2 ) ,partition P500 values less than(500) ,partition PMAX values less than(maxvalue) ...
ALTER TABLE table_name SPLIT PARTITION partition_name AT (boundary_value) INTO ( PARTITION new_partition_1 TABLESPACE tablespace_1, PARTITION new_partition_2 TABLESPACE tablespace_2 ); Example: Suppose you have a table sales partitioned by range on the sales_date column, and you want to spli...