By When MySQL is installed, a simple, text-based program called mysql (or sometimes the command line interface or the CLI) is also installed. Programs that communicate with servers are client software; because this program communicates with the MySQL server, it’s a client. When you enter SQL queries in this client, the response is returned to the client and displayed onscreen. The monitor program can send queries across a network; it doesn’t have to be running on the machine where the database is stored.
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This client is always installed when MySQL is installed, so it’s always available. It’s quite simple and quick if you know SQL and can type your queries without mistakes. To send SQL queries to MySQL from the mysql client, follow these steps: • Locate the mysql client. By default, the mysql client program is installed in the subdirectory bin, under the directory where MySQL is installed. In Unix and Linux, the default is /usr/local/mysql/bin or /usr/local/bin. In Windows, the default is c:Program FilesMySQLMySQL Server 5.0bin.
However, the client might be installed in a different directory. Or, if you aren’t the MySQL administrator, you might not have access to the mysql client. If you don’t know where MySQL is installed or can’t run the client, ask the MySQL administrator to put the client somewhere where you can run it or to give you a copy that you can put on your own computer. • Start the client. In Unix and Linux, type the path/filename (for example, /usr/local/mysql/bin/mysql). In Windows, open a command prompt window and then type the pathfilename (for example, c: Program FilesMySQLMySQL Server 5.0binmysql).
This command starts the client if you don’t need to use an account name or a password. If you need to enter an account or a password or both, use the following parameters: • -u user: user is your MySQL account name. • -p: This parameter prompts you for the password for your MySQL account. For instance, if you’re in the directory where the mysql client is located, the command might look like this: mysql -u root -p • If you’re starting the mysql client to access a database across the network, use the following parameter after the mysql command: -h host, where host is the name of the machine where MySQL is located. For instance, if you’re in the directory where the mysql client is located, the command might look like this: mysql -h mysqlhost.mycompany.com -u root -p Press Enter after typing the command. • Enter your password when prompted for it.