KEY分区:类似于HASH分区,但MySQL服务器自己提供哈希函数。 COLUMNS分区:MySQL 5.5及以上版本支持,允许基于多个列的值进行分区。 3. 使用PARTITION BY创建分区表的基本语法 基本语法如下: sql CREATE TABLE table_name ( column_definitions ) PARTITION BY partition_type ( partition_definition ); table_name:表名...
Here is the generic syntax to create table partition in MySQL: CREATE TABLE table_name table_definition PARTITION BY partition_type ([column | expression]) partition_definition ; Specifically, 1. To create a range partitioned table: CREATE TABLE table_name table_definition PARTITION BY RANGE {(e...
普通租户(MySQL 模式) SQL语句 CREATE TABLE 更新时间:2025-02-20 23:00:01 描述 该语句用来在数据库中创建一张新表。 语法 CREATE[TEMPORARY]TABLE[IFNOTEXISTS]table_name(table_definition_list)[table_option_list][partition_option][AS]select;CREATE[TEMPORARY]TABLE[IFNOTEXISTS]table_nameLIKEtable_name;...
On the same existing table, I have some other alteration to be performed. Such as add column, remove index. From the manual, most of the alteration will make mysql create temporary table. Is it possible to tell mysql only create one temporary table and perform all alteration on it?Nav...
1. CREATE TABLE tk (col1 INT, col2 CHAR(5), col3 DATE) 2. PARTITION BY LINEAR KEY(col3) 3. PARTITIONS 5; 1. 2. 3. ALGORITHM={1 | 2} 选项支持和 [SUB]PARTITION BY [LINEAR] KEY 一起使用。ALGORITHM=1 时,服务器使用与MySQL 5.1相同的键散列函数;ALGORITHM=2 表示服务器使用MySQL 5.5...
CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name (create_definition,...) [table_options] [partition_options] CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name [(create_definition,...)] [table_options] [partition_options] [IGNORE | REPLACE] [AS] query_expression CREATE [TEMPORARY] ...
ON COMMIT选项决定在事务中执行创建临时表操作,当事务提交时,此临时表的后续操作。 PRESERVE ROWS(缺省值):提交时不对临时表做任何操作,临时表及其表数据保持不变。 DELETE ROWS:提交时删除临时表中数据。 COMPRESS | NOCOMPRESS 创建新表时,需要在CREATE TABLE语句中指定关键字COMPRESS,这样,当对该表进行批量插入时...
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 ...
Can't write; duplicate key in table 'mvc_user22' 索引(index|key)可以重名。 根据官方文档: CREATE[TEMPORARY]TABLE[IFNOTEXISTS]tbl_name(create_definition,...)[table_options][partition_options] create_definition:col_namecolumn_definition|[CONSTRAINT[symbol]]PRIMARYKEY[index_type](index_col_name,....
more than one partition. This means, for example that a tablespace having a single datafile whoseINITIAL_SIZE(described in the following item) is 256 MB and whoseEXTENT_SIZEis 128M has just two extents, and so can be used to store data from at most two different disk data table ...