mysql select into variable

Add by Zhj: In the MySQL5.6 of some parameters have been increased, see http://dev.mysql.com/doc/refman/5.6/en/server-system-variables.htmlOriginal: http://mageedu.blog.51cto.com/4265610/1062628Marco Education Linux operation and maintenance

Use SELECT ... Into statement assigns a value to a variableIn the MySQL stored procedure, you can use SELECT ... The INTO statement assigns a value to the variable, which is queried in the database and assigns the resulting result to the variable.

Server system Variables (System variable)The MySQL system variable (systems variables) refers to the various system variables of the MySQL instance, which are actually some system parameters that are used to initialize or set the database to occupy

In common: case-insensitive, both variables Different points: Global variables are read-only in the system and can be modified in a configuration file Terminology classification for MySQL variables: 1. User variable: Starting with "@" in the form

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

Tag: color is medium tar local str local SSI GlobalDescription: Now on the market defined variables of the tutorial and books are basically stored procedures are described, but the stored procedure variables can only be used in begin...end block,

As far as my current tests are concerned, this vulnerability has two reasons:1. Use the default mysql installation method. The mysql User does not have the permission to access the configuration file/etc/mysql/my. cnf;2. If selinux or apparmor is

MySQL database programs that can run on a local version of Windows have been available from MySQL AB since version 3.21, and the daily download percentage of MySQL is very large. This section describes the process of installing MySQL on Windows. The

Use select... The into statement assigns a value to the variable. In the MySQL stored procedure, you can use select... The into statement assigns a value to the variable, queries the variable in the database, and assigns the obtained result to the

18.2.1 MySQL server has gone away errors related to Lost connection to server during query. The most common cause of the MySQL server has gone away error is that the server times out and closes the connection. By default, if nothing happens, the