partitionbyrange (HIREDATE) ( partition P_HIREDATE_1valuesless than (TO_DATE('1981-01-01 00:00:00','SYYYY-MM-DD HH24:MI:SS','NLS_CALENDAR=GREGORIAN')) tablespace TBS_CLPC_META pctfree10initrans1maxtrans255, partition P_HIREDATE_2valuesless than (TO_DATE('1982-01-01 00:00:00',...
***/--创建示例表createtablerange_example ( idnumber(2), done_date date, datavarchar2(50) )--创建分区,分区键为示例表(range_example)中的 done_date 字段partitionbyrange (done_date) ( partition part_1valuesless than ( to_date('20160901','yyyymmdd') ), partition part_2valuesless than ( ...
***/--创建示例表createtablerange_example ( idnumber(2), done_date date, datavarchar2(50) )--创建分区,分区键为示例表(range_example)中的 done_date 字段partitionbyrange (done_date) ( partition part_1valuesless than ( to_date('20160901','yyyymmdd') ), partition part_2valuesless than ( ...
partition by range(time_id) subpartition by range (time_id) --指定主表分区和子分区分区方式都是:范围分区,并按照列time_id 进行范围划分 ( partition sales_part_1998 values less than (TO_DATE('1999-01-01 00:00:00', 'YYYY-MM-DD HH24:MI:SS')) tablespace EXAMPLE ( subpartition sales_part...
birthday DATE ) PARTITION BY RANGE(birthday) INTERVAL (NUMTODSINTERVAL(1,'hour')) STORE IN (tbs01,tbs02,tbs03) ( PARTITION partition20140100 VALUES LESS THAN(to_date('2014-01-01 01:00:00','yyyy-mm-dd hh24:mi:ss')) ); 除此之外,还可以按”分钟“、”秒“进行自动分区。
CONSTRAINT "T_RANGE_10_UK" UNIQUE ("B") )PARTITION BY RANGE ("A")( ... ); CREATE TABLE T_RANGE_10 ( "A" INT, "B" INT, "C" DATE, "D" NUMBER GENERATED ALWAYS AS (TO_NUMBER(TO_CHAR("C",'dd'))) VIRTUAL, ...
create_time date) partition by range(create_time) ( partition p1 values less than (to_date('2023-02-01', 'yyyy-mm-dd')), partition p2 values less than (to_date('2023-03-01', 'yyyy-mm-dd')), partition pmax values less than (maxvalue) ...
CREATE TABLE rangeexample( range_key_column DATE, DATA VARCHAR2(20), ID integer ) PARTITION BY RANGE(range_key_column) ( PARTITION part01 VALUES LESS THAN(TO_DATE('2008-07-01 00:00:00','yyyy-mm-dd hh24:mi:ss')) TABLESPACE test_space01, ...
Partition pruning is the simplest and also the most substantial means to improve performance using partitioning. Partition pruning can often improve query performance by several orders of magnitude. For example, suppose an application contains an Orders table containing a historical record of orders, and...
添加缺失的 ssma_oracle.fn_getColEntryByRange 仿真函数 在目标数据库的行计数查询中使用 COUNT_BIG 添加设置以便在合并操作中仿真 Oracle 的空字符串行为 SSMA v8.20 SSMA for Oracle 的 v8.20 版本包含以下更改: 添加对分区表的支持 增加SKIP LOCKED 子句的转换 SSMA v8.19 SSMA for Oracle 的 v8.19 版本包含...