mysql if statement in select

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/

In mysql, if we want to query records, we will use the select statement. Next I will summarize the various operations on the mysql select statement. If you need to learn more, please do not go to the reference. The most common database operations

The most common operation of database is "plug, check, delete, change". In the previous log, I introduced the MySQL inserts INSERT statement, also introduced the update UPDATE statement for everyone, as well as deletes the statement delete and the

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.

This paper is a fast and precise grasp of the SELECT statement in MySQL database. The basic syntax for a SELECT statement in MySQL is: The following is a reference fragment: SELECT [Straight_join] [Sql_small_result] [Sql_big_result]

This paper is a fast and precise grasp of the SELECT statement in MySQL database. The basic syntax for a SELECT statement in MySQL is: The following is a reference fragment:SELECT [Straight_join] [Sql_small_result][Sql_big_result]

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 -

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

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

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