(1970), PARTITION p2 VALUES LESS THAN (1980), PARTITION p3 VALUES LESS THAN (1990), PARTITION p4 VALUES LESS THAN MAXVALUE ); CREATE TABLE quarterly_report_status ( report_id INT NOT NULL, report_status VARCHAR(20) NOT NULL, report_updated TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON...
ERROR1503(HY000): A UNIQUE INDEX must include all columnsinthe table's partitioning functionmysql>CREATE TABLE tnp (->id INT NOT NULL AUTO_INCREMENT,->refBIGINT NOT NULL,-> name VARCHAR(255),->PRIMARY KEY pk (id))->PARTITION BY RANGE (id)-> ( PARTITION p0 VALUES LESS THAN (6), P...
`city`varchar(32)NOTNULL) ENGINE=InnoDBPARTITIONBYLIST COLUMNS (`city`) (PARTITIONp1VALUESIN("北京", "上海", "杭州"),PARTITIONp2VALUESIN("浙江", "洛阳", "南宁"),PARTITIONp3VALUESIN("郑州", "南京", "湖州") ); 3、HASH 分区 HASH 分区的目的是将数据均匀的分布到预先定义的各个分区中,保...
table_option: {AUTOEXTEND_SIZE [=] value| AUTO_INCREMENT [=] value| AVG_ROW_LENGTH [=] value| [DEFAULT] CHARACTER SET [=] charset_name| CHECKSUM [=] {0 | 1}| [DEFAULT] COLLATE [=] collation_name| COMMENT [=] ‘string’| COMPRESSION [=] {‘ZLIB’ | ‘LZ4’ | ‘NONE’}| CO...
CREATE TABLE t1 ( id INT NOT NULL, uid INT NOT NULL, PRIMARY KEY (id) ) PARTITION BY RANGE (id) (PARTITION p0 VALUES LESS THAN(5) ENGINE = INNODB, PARTITION p1 VALUES LESS THAN(10) ENGINE = INNODB ); CREATE TABLE t1 ( id INT NOT NULL, ...
PARTITION pmax VALUES LESS THAN maxvalue ENGINE = InnoDB);123456789然后插入4条数据:insert into test_11 values (1,"20170722"),(2,"20170822"),(3,"20170823"),(4,"20170824");1然后查看information下partitions对分区别信息的统计:select PARTITION_NAME as "分区",TABLE_ROWS as "行数" from informat...
31',)partitionBYrange(to_days(create_time))(PARTITIONp201701VALUESLESSTHAN(TO_DAYS('2017-02-01'))ENGINE=InnoDB,PARTITIONp201702VALUESLESSTHAN(TO_DAYS('2017-03-01'))ENGINE=InnoDB,PARTITIONp201703VALUESLESSTHAN(TO_DAYS('2017-04-01'))ENGINE=InnoDB,PARTITIONp2018VALUESLESSTHANMAXVALUEENGINE=InnoDB...
PARTITION p11 VALUES LESS THAN MAXVALUE ); 注意最后一行,考虑到可能的最大值 *创建未分区表 [sql]view plaincopy mysql> create table no_part_tab (c1 int(11) default NULL,c2 varchar(30) default NULL,c3 date default NULL) engine=myisam; ...
1. To create a range partitioned table: CREATE TABLE table_name table_definition PARTITION BY RANGE {(expr) | COLUMNS(column_list)} ( PARTITION [partition_name_1] VALUES LESS THAN (value_1), PARTITION [partition_name_2] VALUES LESS THAN (value_2), ...
select sid,student_id,count(sid) over(PARTITION by student_id order by student_id) 及格数 from score where num>= 60; 总结:我们会发现开窗函数不会修改源数据表的结构,也是在表的最后一列添加想要的结果,如果分组存在多行数据,则重复显示,因此对于既想要分组结果,又不想改变数据表的结构时,使用开窗函数...