create_time date) partition by range(create_time) interval (numtoyminterval(1, 'MONTH')) -- 范围分区(间隔分区) subpartition by range(age) -- 子分区通过年龄进行划分 subpartition template -- 定义子分区模板 ( subpartition p_children values less than (12), subpartition p_adolescent values less ...
mysql> CREATE TABLE part_tab ( c1 int default NULL, c2 varchar(30) default NULL, c3 date default NULL ) engine=myisam PARTITION BY RANGE (year(c3)) (PARTITION p0 VALUES LESS THAN (1995), PARTITION p1 VALUES LESS THAN (1996) , PARTITION p2 VALUES LESS THAN (1997) , PARTITION p3 VAL...
1PARTITIONBYHASH(YEAR(createtime))2PARTITIONS10 2.2 Range(范围) 这种策略是将数据划分不同范围。例如我们可以将一个千万级别的表通过id划分成4个分区,每个分区大约500W的数据,超过750W后的数据统一放在第4个分区。 1PARTITIONBYRANGE(id) (2PARTITIONP0VALUESLESS THAN(2500001),3PARTITIONP1VALUESLESS THAN(500000...
mysql>CREATETABLE part_tab ( c1intdefaultNULL, c2varchar(30)defaultNULL, c3datedefaultNULL) engine=myisam PARTITIONBY RANGE (year(c3)) (PARTITION p0VALUES LESS THAN (1995), PARTITION p1VALUES LESS THAN (1996) , PARTITION p2VALUES LESS THAN (1997) , PARTITION p3VALUES LESS THAN (1998) , ...
CREATE TABLE PARTITION功能描述 创建分区表。逻辑上的一张表根据某种方案分成几张物理块进行存储,这张逻辑上的表称之为分区表,物理块称之为分区。分区表是一张逻辑表,不存储数据,数据实际是存储在分区上的。 常见的分区策略包括:范围分区(Range Partitioning)、哈希分区(Hash Partitioning)、列表分区(List ...
PARTITION BY RANGE(q_year_month) (STARTING (199201) ENDING (199212) EVERY (1), STARTING (199301) ENDING (199312) EVERY (1)); CREATE TABLE quan_by_month_ex( q_year_month INT, q_count INT NOT NULL, ts TIMESTAMP, msg CLOB(32K)); ...
最常见也最基本的创建方式是手动创建,Doris 支持 Range 和 List 两种分区创建方式。对于日志、交易记录等基础业务场景,数据的时间维度较为明确,我们一般按照时间维度创建 Range 分区,建表语句示例如下: -- Range Partition CREATE TABLE IF NOT EXISTS example_range_tbl ...
("WKFINSTID") USING INDEX ENABLE, SUPPLEMENTAL LOG DATA (ALL) COLUMNS ) PARTITION BY RANGE ("INSTCREATEDATE") INTERVAL (NUMTOYMINTERVAL(1, 'MONTH')) (PARTITION "P_OLD" VALUES LESS THAN (TO_DATE(' 2022-04-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) ...
CREATE TABLE TEST_PART (TIME_ID NUMBER, REGION_ID NUMBER, ORDER_ID NUMBER, ORDER_DATE DATE ) PARTITION BY RANGE (ORDER_DATE) INTERVAL (NUMTOYMINTERVAL(1,’month’) (PARTITION part1 VALUES LESS THAN (TO_DATE (‘2013-06-01’, ‘YYYY-MM-DD’)), ...
GaussDB(DWS) supports range partitioned tables and list partitioned tables.Range partitioned table: Data within a specific range is mapped onto each partition. The range