mysql addition

MySQL timestampdiff () functions are much more powerful than datediff () functions. datediff () can only calculate the number of days for the difference between two dates. Mysql common date addition and subtraction functions and instance

1. IntroductionWhen using MySQL's replication mechanism to achieve master-slave synchronization, it was implemented by three threads, one I/O thread from the library, one I/O thread and one SQL thread. At configuration time, the main library needs

1. Full backup and incremental backup 1.1 full-scale backupFull-volume data is all the data in the database, and a full backup is the backup of all the data in the database.Back Up all libraries:mysqldump -uroot -p123456 -S /data/3306/mysql.sock -F -

Henan College of Traditional Chinese Medicine Course Design Report of MySQL Database Management  Title: Research and Implementation of MySQL Clusters       Completion date:2012January 1, December 31   Contents 1. Course Design overview 3 2. research

Installation RequirementsInstallation Environment: CentOS-6.3Installation Method: source code compilation installationSoftware Name: mysql-cluster-gpl-7.2.6-linux2.6-x86_64.tar.gzDownload Address: http://mysql.mirror.kangaroot.net/Downloads/Software

MySQL Common date addition and subtraction function and example tutorialMySQL Date TypeMySQL Date Type: Date format, occupied storage space, date range comparison.Date type storage space Date format date range------------  ---------   ---------------

MySQL performance tuning and Architecture Design-Chapter 1 Performance Design-MySQL Replication and replication Optimization Chapter 1 scalability design-MySQL Replication Preface: MySQL Replication is a unique feature of MySQL. It can completely

MySQL builds a series of multiple instances. The so-called multi-instance is to build and run multiple MySQL instances on one server. each instance uses different service ports and listens through different sockets. physically, each instance has an

Original source: http://www.cnblogs.com/luckcs/articles/2543607.htmlMySQL Master-slave Replication (master-slave) and read-write separation (mysql-proxy) practicesAs the most widely used free database in the world, MySQL believes that all engineers

MySQL builds a series of multiple instances. The so-called multi-instance is to build and run multiple MySQL instances on one server. Each instance uses different service ports and listens through different sockets. Physically, each instance has an