partition by key(birthdate) partitions4; 5) 创建复合分区 range – hash(范围哈希)复合分区 create table emp (empnovarchar(20) not null , empnamevarchar(20), deptnoint, birthdatedatenot null, salaryint ) partition by range(salary) subpartition by hash(year(birthdate)) subpartitions3 ( partiti...
子分区可以是 HASH/KEY 等类型。 PARTITION BY RANGE (uid) SUBPARTITION BY HASH (uid % 4) SUBPARTITIONS 2( PARTITION p0 VALUES LESS THAN (3000000) DATA DIRECTORY = ‘/data0/data’ INDEX DIRECTORY = ‘/data1/idx’, PARTITION p1 VALUES LESS THAN (6000000) DATA DIRECTORY = ‘/data2/data’...
subpartitionbyhash(子分区键)(partition分区名1valuesless than (范围1)( subpartition 子分区名1, subpartition 子分区名2, ... ),partition分区名2valuesless than (范围2)( subpartition 子分区名1, subpartition 子分区名2, ... ), ... );-- 查询一张表各个分区的数据量selectpartition_nameas"分区名...
对RANGE 分区再次进行子分区划分,子分区采用 HASH 类型。 或者 CREATE TABLE users ( uid INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY, name VARCHAR(30) NOT NULL DEFAULT '', email VARCHAR(30) NOT NULL DEFAULT '' ) PARTITION BY RANGE (uid) SUBPARTITION BY KEY(uid) SUBPARTITIONS 2( PARTITIO...
上述代码中,我们创建了一个名为mytable_p20220101的分区表,用于存储日期在2022年1月1日的数据。我们使用了CHECK约束来确保只有符合条件的数据才能插入到该分区表中。我们还使用了SUBPARTITION BY HASH子句来进行子分区,以进一步提高查询性能。 3. 创建分区函数 ...
PARTITION BY HASH KEY(column_name)[PARTITION NUM N] SUBPARTITION BY LIST(subpart_collong) SUBPARTITION OPTIONS(available_partition_num=NUM) TABLEGROUP tablegroup_name options(updateType='realtime'); 1. 2. 3. 4. 5. 6. 7. 8. 参数 ...
range - hash(范围哈希)复合分区 create table emp (empno varchar(20) not null , empname varchar(20), deptno int, birthdate date not null, salary int ) partition by range(salary) subpartition by hash(year(birthdate)) subpartitions 3
create table ts (id int, purchased date) partition by range(year(purchased))subpartition by hash(to_days(purchased)) subpartitions 2 (partition p0 values less than (1990),partition p0 values less than (2000),partition p0 values less than maxvalue);CREATE TABLE IF NOT EXISTS `sub_part` (...
HASH:PARTITION BY HASH KEY :PARTITION BY KEY 子分区:SUBPARTITION BY XXX 一、RANGE partitioning 代码语言:javascript 代码运行次数:0 运行 AI代码解释 CREATETABLEmembers01(idint(11)NOTNULLAUTO_INCREMENT,usernameVARCHAR(16)NOTNULL,emailVARCHAR(35),joinedDATETIMENOTNULL,PRIMARYKEY(id,joined),UNIQUEKEY`uk...
partition by key(birthdate) partitions4; 5) 创建复合分区 range - hash(范围哈希)复合分区 create table emp (empnovarchar(20) not null , empnamevarchar(20), deptnoint, birthdatedatenot null, salaryint ) partition by range(salary) subpartition by hash(year(birthdate)) ...