mysql partition by date

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MySQL Partition Table partition: Modify the partition field online. Learn more about partition (1)

xxx_deleted, xxx_tmp to XXX; Import raw data Insert into XXX select * From xxx_deletedxxx_deleted; OK, everything is done. The entire process is 50 minutes. After the mmm failover is switched, the outline operation table structure changes and data import. The actual downtime does not include the time for modifying the table structure partition field, only the Failover switching time is 30 seconds. MySQL

MySQL partition table partition online modify partition field _ MySQL

), PARTITION m10 values in (10 ), PARTITION m11 values in (11 ), PARTITION m12 values in (12) ); Switch the table name and modify the table structure. Rename table xxx TO xxx_DELETED, xxx_TMP TO xxx; Import raw data Insert into xxx select * from xxx_DELETEDxxx_DELETED; OK, everything is done. The entire process is 50 minutes. after the MMM failover is switched,

MySQL partition Table partition online partition field Modification

table xxx TO xxx_DELETED, xxx_TMP TO xxx; import the original data insert into xxx select * from xxx_DELETEDxxx_DELETED; OK, everything is done. The entire process is 50 minutes. After the MMM failover is switched, the outline operator changes the table structure and imports data. The actual downtime does not include the time for modifying the table structure partition field, only the failover switching time is 30 seconds. Tition: the official Englis

In the MySQL partition table, the partition field is modified online. In the future, we will learn about partition (2)-> subpartitions and how to process null values.

null values.For example, the following create table statement is valid:If no primary key is specified and no partition field is specified during definition, the following error occurs: Mysql> Create Table tm3 (-> S1 char (32)-> partition by key ()-> partitions 10; error 1488 (hy000 ): field in list of fields for partition

Hive creates a partition table by date | dynamically inserts data into the date Partition

Hive creates a partition table based on the current day (""). hql is as follows: CREATE EXTERNAL TABLE IF NOT EXISTS product_sell(category_id BIGINT,province_id BIGINT,product_id BIGINT,price DOUBLE,sell_num BIGINT)PARTITIONED BY (ds string)ROW FORMAT DELIMITEDFIELDS TERMINATED BY '\t'LINES TERMINATED BY '\n'STORED AS TEXTFILE; Insert data based on the date as the par

MySql DATA partition operation-new partition operation, mysql Data Partition added

MySql DATA partition operation-new partition operation, mysql Data Partition added If you want to partition a created table and use alter to add a partition,

MySQL table partition (four types of partition from MySQL table)

split the table based on the employee's work code, that is, a continuous interval based on the Job_code column values. For example--suppose a 2-digit work code is used to represent a normal (in-store) worker, three numeric codes represent offices and support staff, and four numeric codes represent management layers, and you can create the partition table using the following statement:SQL code:CREATE TABLE Employees (ID INT not NULL,FName VARCHAR (30)

MySQL table partition, view partition

Original address: http://blog.csdn.net/feihong247/article/details/7885199, MySQL partition introductionDatabase partitioning Database partitioning is a physical database design technique. Although partitioning technology can achieve many effects, its primary purpose is to reduce the amount of data read and write in a particular SQL operation in order to narrow the response time of the SQL statement, while t

MySQL Partition Partition I

,Order_date Date,Note varchar (500)) Engine=myisam partition by range (ID)Subpartition by Hash (store_id) subpartitions 2(Partition P0 values less than (5),Partition P1 values less than (10),Partition P3 values less than (15));When inserting data into a table, what data is p

MySQL partition summary, mysql Partition

MySQL partition summary, mysql Partition MySQL supports four partitions: RANGE, LIST, HASH, and KEY. Each partition has a special type. For RANGE partitions, there are range columns partitions. LIST partitions have list columns pa

MySQL partition table and auto-create partition partition

less THAN (20180630) ENGINE = InnoDB);Delete PartitionALTER TABLE ' test1 ' drop PARTITION p20180629;MySQL does not automatically create partitions, it needs to automatically create partitions using MySQL event events1. The stored procedure for creating the partition is as follows (each execution verifies that the cu

Mysql Partition Introduction (ix)--Partition management

Tags: mysql partition mysql optimized partition optimized partition operationOne, partition operation 1. To change a table without partitions to a partitioned tableALTER TABLE trb3 PARTITION

Mysql partition and instance demonstration, mysql partition instance demonstration

supports partitioning SHOW VARIABLES LIKE '%partition%'; For mysql, currently versions 5.1 and support partition operations. If YES, the database supports partition operations. 2. Four common partitions Range Partition Commonly known as range

Mysql date, mysql time, mysql date calculation, mysql time calculation, mysql date

)FROM_UNIXTIME(Unix_timestamp, format)27.SEC_TO_TIME(Seconds)28.TIME_TO_SEC(Time) ######################################## ######################################## # 1. Here is an example of using the date function. The following query Selects all records. The value of date_col is within the last 30 days: Mysql> SELECT something FROM table WHERETO_DAYS(NOW ())-TO_DAYS(Date_col) 2.DAYOFWEEK(

MySQL specifies the path of each partition and mysql Partition

MySQL specifies the path of each partition and mysql PartitionIntroduction You can specify the storage path for each partition of a partitioned table. For an innodb Storage engine table, you can only specify the data path, because the data and indexes are stored in one file, for the MYISAM storage engine, you can speci

MySQL composite partition and mysql composite Partition

MySQL composite partition and mysql composite Partition In the end, it is still open-source software. MySQL's support for composite partitions is far from that of Oracle. In MySQL 5.6, only the RANGE and LIST subpartitions are supported, and the subpartitions can only be HAS

MySQL database partition function tutorial _ MySQL

_ part' (-> 'news _ id' int (11) not null comment 'news ID ', -> 'content' varchar (1000) not null default ''' COMMENT 'news content',-> 'U _ id' varchar (25) not null default ''comment' source IP address ',-> 'Create _ time' date not null default '2017-00-00 00:00:00 'comment' time'->) ENGINE = innodb default charset = utf8-> partition by linear hash (YEAR (create_time)-> PARTITIONS 3; Query OK, 0 rows af

MySQL database partition function tutorial, mysql tutorial

default ''comment' source IP address ',-> 'create _ time' date not null default '2017-00-00 00:00:00 'comment' time'->) ENGINE = innodb default charset = utf8-> partition by linear hash (YEAR (create_time)-> PARTITIONS 3; Query OK, 0 rows affected (0.07 sec) For testing, see operations on range partitions. 6. subpartitionA subpartition is the re-division of each partit

Mysql use of the Tutorial partition table use method (delete partition table) _mysql

key partition only supports the calculation of one or more columns, and the MySQL server provides its own hash function. You must have one or more columns that contain integer values. Most commonly used are range partitions and list partitions.Range partitionThis is a test for a sales business.Sales table has date/goods/Sales three fieldsTest data from January

MySQL partition range partition tutorial

MySQL partition range partition tutorial The tables in the range partition are partitioned in one of the following ways, and each partition contains the rows of those partition expressions whose values are in a given contiguous i

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