mysql 分区 按 PARTITION BY RANGE (TO_DAYS(startTime)) to_days() Given a date date, returns a day number (the number of days since year 0). 给定一个date 日期,返回天数 Create Table: CREATE TABLE `ClientActionTrack` ( `sn`
创建表 首先,我们需要创建一个表并定义分区。这里我们将创建一个名为orders的表,该表记录订单信息,并按订单日期进行分区。 CREATE TABLE orders ( order_id INT AUTO_INCREMENT, customer_id INT, order_date DATE, total_amount DECIMAL(10, 2), PRIMARY KEY (order_id) ) PARTITION BY RANGE (TO_DAYS(ord...
mysqlTO_DAYS ##MySQL函数之TO_DAYS### 引言MySQL是一种常用的关系型数据库管理系统,提供了丰富的内置函数用于数据处理和计算。本文将介绍MySQL中的一个日期函数TO_DAYS,并通过代码示例演示其用法和功能。 ###TO_DAYS函数简介TO_DAYS函数是MySQL中用于计算日期的一个函数。它接受一个日期参数,并返回该日期距离公元...
| testdb | t_test_position_task_result | p202203 | to_days(`create_time`) | RANGE | 738611 | 266987 | 63.61M | 25.55M | 89.16M | | testdb | t_test_position_task_result | p202204 | to_days(`create_time`) | RANGE | 738641 | 0 | 0.02M | 0.05M | 0.06M | | testdb | ...
mysql分区按PARTITIONBYRANGE(TO_DAYS(startTime))to_days()Given a date date, returns a day number (the number of days since year 0).给定⼀个date ⽇期,返回天数 Create Table: CREATE TABLE `ClientActionTrack` (`sn` bigint(20) NOT NULL AUTO_INCREMENT,`clientSn` int(11) DEFAULT NULL...
在MySQL 中,TO_DAYS() 函数用于将日期转换为天数 以下是如何创建和使用基于 TO_DAYS() 函数的分区表的示例: 创建分区表: CREATE TABLE orders ( order_id INT NOT NULL, order_date DATE NOT NULL, customer_id INT NOT NULL, amount DECIMAL(10, 2) NOT NULL ) PARTITION BY RANGE (TO_DAYS(order_...
MySQL可以通过使用分区表的方式按日期进行分区。下面是一种按日期分区表的方法: 创建一个新表,包含要进行分区的列和其他需要的列。 CREATE TABLE my_table ( id INT, date_column DATE, other_column VARCHAR(255), ... ) PARTITION BY RANGE(TO_DAYS(date_column)); 复制代码 创建分区 ALTER TABLE my_...
We also tried HASH(RANGE(to_days)) for testing purposes to no avail. Anyway, we do not want to use hash as we have less control over the partitions. Any thoughts? What are we doing wrong? Server version: 5.1.31-log Thanks in advance for your help. JoolsNavigate...
RANGE ,不同之处在于分区是根据与一组离散值中的一个匹配的列来选择的。● 哈希分区。使用这种类型的...
* Expect to build 1-7 Summary tables. * Consider turning small ENUMs into multiple columns; eg, SUM(gender='M') AS Males, SUM(gender='F') as Females. Subject Views Written By Posted Partitioning with range(to_days) issue 11469