mysql multiple updates in one statement

The database updates multiple records with different values, updates multiple fields at the same time, and updates multiple records Requirement The following two tables are student (student table) and score (test student table) Statistics: total

Document category: Database Keyword: MySQL master slave Recently, due to project requirements, Mysql Data Synchronization has been set on Linux servers. Fortunately, there are a lot of network resources, and Google has all of them, but the actual

Mysql updates multiple different records at a time, bitsCN.com Mysql updates multiple different records at a time Recently, a friend in oschina asked me how to update multiple different records in mysql. I know two methods: on duplicate key update

Mysql database master-slave experience management mysql master-slave for more than two years, management of more than 200 groups of mysql master-slave, involving almost all versions of master-slave, this blog is summative, part of which is from the

Work needs, use of notes. The article is very long, pour a cup of tea slowly look.There are many application scenarios of database, such as database synchronization , a master multi -Slave, multi- master and multi-slave , Multi-master one from , etc.

Mysql updates multiple different records at a time. Recently, another user in oschina asked mysql how to update multiple different records at a time. I know two methods, use the on duplicate key update syntax and replace into syntax. Both of these

MySQL master-slave replication principle and architecture, mysql master-slave architecture1 copy Overview The built-in replication function of Mysql is the basis for building large and high-performance applications. This distribution mechanism

DirectoryPrinciple 1Master-Slave Synchronization configuration 2Master server Synchronization User Authorization 2Configuring MY.CNF files for MySQL master server 3Standby configuration: 4Common commands: 5Dual master Configuration my.cnf

The SQL used to manipulate the database is generally divided into two types, one is the query statement, which we call the SELECT statement, the other is the UPDATE statement, also known as the data manipulation statement. The implication is that

In order to better optimize MySQL in high concurrency, it is necessary to understand the locking table mechanism when MySQL query is updated.I. OverviewMySQL has three levels of Lock: page level, table level, row level.MyISAM and MemoryStorageThe