1. Background and Objective Compared with Oracle and SQL Server databases, MySQL database has advantages and disadvantages in kernel. When we use MySQL database, we...
Recently, when I was doing wechat authorization, some wechat users directly reported errors when obtaining wechat account names, and some wechat accounts were normal. Finally,...
Based on the preceding output, the cluster deployment is complete. ** Note: ** Because this deployment uses the GroupReplication mode (currently Kubed only supports this...
1, query statements (part of the DQL language) 1, query statements 1.1 basic statements query can be checked: constants, expressions, functions; Use distinct if you...
MySQL is a server/client architecture software. For a server, there can be several clients connected to it. After each client is connected to the server,...
Today, I'm going to show you how to optimize a scenario with a lot of writing. Generally speaking, MYSQL database write performance is mainly limited...
2. SET the GLOBAL parameter of validate_password.policy to LOW and enter the SET GLOBAL validate_password.policy=LOW statement. 3. The current password length is 8. If you...
Just yesterday, I mistakenly deleted the performance_schema in mysql mapped by docker. By the time I realized something was wrong, it was too late. Fortunately,...
In primary/secondary replication, one server serves as the primary server, all data updates are performed on the primary server, and data on the primary server...
MySQL master-slave replication On large-scale projects, MySQL replication is used to create MySQL master-slave clusters. Data synchronization can be done primarily by configuring one or...
The primary database is used for writing, and the secondary database is used for reading laravel. Remember to set mysql access permissions and agree to...
In the process of MySQL's processing of join operations, join buffer is an important concept and an important optimization method of MySQL for table join....
Hash indexes, implemented based on hash tables, are valid only for full value matches. Resolve conflicts as linked lists. Very fast lookups O(1) Full-text indexes...
Summary: The SQL optimizer is essentially an implementation of a highly abstract data interface, designed so that customers can use a more general and easy-to-understand...