case in select statement mysql

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MySQL Operations management-mysql Backup and recovery practical case and production plan 17

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 -

Mysql Database Operation statement

MySQL Format statement specificationHow do I log into your database?Example!If you are compiling the installation of the flowers, then you have to compile the installation of the directory to go, my is installed into the/usr/local/mysql database: Cd/

Mysql database operation statement and mysql statement

Mysql database operation statement and mysql statement Mysql format statement SpecificationHow to log on to your database?Example!If it is the cost of compilation and installation, you have to go to the directory after compilation and installation.

MySQL Learning--sql query statement (connection Query & subquery) (iii)

One: Connection query:Connection query is to connect two or more tables according to a certain condition, select the required data, the connection query query two or more tables at the same time, when there are fields representing the same meaning

Installing MySQL in Linux and solutions to some common problems _ MySQL-mysql tutorial

1. download MySql 1. download MySql Open http://www.mysql.com/downloads/mysql/#downloads download in browser My downloaded version is Red Hat 5 version of http://www.mysql.com/downloads/mirror.php? Id = 407552 Upload the file to the server, or

MySQL Basics-SELECT statement

Basic-SELECT statement Detailed SELECT statement detail one, experimental introductionThe most commonly used SELECT statement in SQL, which is used to select data in a table, will be studied in detail using a series of hands-on instructions to learn

MySQL Common instructions, java,php programmers, database engineers must. Programmers Xiaoice Common Data collation

MySQL常用指令,java,php程序员,数据库工程师必备。程序员小冰常用资料整理MySQL common commands (for reference)The most common display commands are:1. Display the list of databases.show databases;2. Display the data table in the library:Use MySQL;Show tables;3, display the

Mysql-select Statement Advanced Application

1.1 Select Advanced Applications 1.1.1 Pre-prep workThis test uses the world database, by MySQL Official offer :Https://dev.mysql.com/doc/index-other.html World file Import method, official

MySQL data recovery case after truncate misoperation, mysqltruncate

MySQL data recovery case after truncate misoperation, mysqltruncate The actual online scenario is complicated. At that time, the truncate and delete operations were involved. It was confirmed that more than 70 thousand rows of data were lost. when

How to securely configure and apply MySQL database _ MySQL

MySQL has become one of the most widely used databases on the network, especially for Web applications. it occupies the absolute advantage of small and medium applications. All of this comes from its small and easy-to-use, secure and effective, open

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