mysql lag function

1. There is no lag and lead function in MySQL because Oracle is used to it, and no such function is inconvenient. So I wonder if I can make it.2. If the function is used, it can certainly be realized. But if you don't use a function, can it be

Lag and Lead functions of mysql 1. There are no lag and lead functions in mysql. it is inconvenient to use this function because Oracle is used to it. So I wonder if it can be implemented. 2. If you use a function, you can certainly implement it.

The role of Master and subordinate: 1. Can be used as a backup method 2. Used to achieve the separation of read and write, ease the pressure of a database MySQL master-slave backup principle: MySQL's master-slave replication is at least two

Why do I need a delayed backup?Percona-xtrabackup is an excellent tool for incremental backups. The delayed backups we talked about today are also using their products.AB replication was previously mentioned in the MySQL AB replication article.

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

Management MySQL master and slave has more than 2 years, managed more than 200 sets of MySQL master and slave, almost related to each version of the master and slave, this blog is summarized, part of it is from the network, most of it is based on

1. What does "NDB" mean?It means: "Network Database". NDB (also called NDB Cluster or NDBCLUSTER), you can use it to allow MySQL to support clusters. 2. What is the difference between cluster and replication?In the replication system, a MySQL master

DongdongzzcsThe 1th page:"IT168 Zhuangao" the author of this article, Daniel Nichter, is the developer of the MySQL tool, who recommended 10 essential tools for MySQL administrators. The following is the full text content:MySQL is a complex system

MySQL performance tuning and Architecture Design-the idea and solution of the High Availability design in Chapter 17th, mysql Tuning Chapter 1 High Availability design ideas and solutions Preface: The database system is the core part of an

17th. Ideas and solutions for high-availability designObjective:The database system is the core part of an application system, if the whole system availability is guaranteed, the database system can not have any problems. For an enterprise-class