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7.3. Connections

The Connections section allows you to create, edit, and delete connection profiles. The center box displays a list of currently available profiles, together with a history of connections that were made without being stored in a profile. You can collapse or expand both the Connections and History trees by double-clicking them.

Connections are automatically added to the History tree whenever you establish a connection to a MySQL server without using one of the profiles stored under the Connections tree. They do not appear in the drop-down box of the Connection dialog, but you can use any of them by manually typing their name into the Connection box of the Connection dialog.

Рисунок 7.2. Options dialog: Connections

Options dialog: Connections

To edit an existing connection profile, click on its name and change the values that appear in the Connection Parameters and Advanced Parameters tabs, then click on the Apply Changes button to save your changes.

When you select a connection profile from either the Connections or History trees, the Connection Parameters tab displays the following fields:

  • Connection: The connection profile label. This is the name by which you refer to the profile and that appears in the Connection drop-down box of the Connection dialog. It may contain any characters, including spaces. Choose distinctive names so that you can easily tell which profiles they refer to. The names can help you distinguish connections to different MySQL servers, or connections as different MySQL users to a given server.

  • Username: The username used to connect to the MySQL server.

  • Password: The password used to connect to the MySQL server. Note that passwords are not stored in the connection profile, unless you specify otherwise in the General Options section.

  • Hostname: The name of the host machine where the MySQL server runs, or its IP address.

  • Port: The TCP/IP port that the MySQL server listens to on the host machine.

  • Type: Specifies the protocol used to connect to the database server. The default protocol is MySQL (which uses the native MySQL protocol). The other protocols listed are not currently available.

  • Schema: The default database for a connection when using the MySQL Query Browser.

  • Notes: You can use this field to enter comments or additional information describing the connection profile.

Note that the Advanced Parameters tab may not be available in some of the first releases of MySQL Administrator. If that is the case in the version you are using, you can still set those parameters in the Connection dialog. Use the Details ... button of that dialog to display the Advanced Connection Options.

When you select a connection profile from either the Connections or History list, the Advanced Parameters tab displays the following checkboxes:

  • Use compressed protocol: If checked, the communication between the application and the MySQL server will be compressed, which may increase transfer rates. This corresponds to starting a MySQL command-line tool with the --compress option.

  • Return number of found rows, not number of affected rows: By default, MySQL returns the number of rows changed by the last UPDATE, deleted by the last DELETE or inserted by the last INSERT statement. When this option is checked, the server returns the number of rows matched by the WHERE statement for UPDATE statements.

  • Ignore spaces after function names, make them reserved words: Normally, any refereence to a function name in an SQL statement must be followed immediately by anopening parenthesis. If this option is checked, spaces may appear between the function name and the parenthesis, like this: 

           COUNT (*)

    Enabling this option has the effect that function names become reserved words. This option corresponds to starting a MySQL command-line tool with the --ignore-spaces option.

  • Allow interactive_timeout seconds of inactivity before disconnect: Normally, the connection is closed by the MySQL server after a certain period of inactivity on the client side. This period can be set with the interactive_timeout variable. If checked, the server will not close the connection unless the period of inactivity exceeds the value set by interactive_timeout. This corresponds to starting a MySQL command-line tool with the --connect-timeout=seconds option.

  • Enable LOAD DATA LOCAL handling: By default, the LOCAL option of the LOAD DATA statement is disabled for security reasons. Enabling this option will allow to load data from the local machine (the machine where the client GUI application is running). This option corresponds to starting a MySQL command-line tool with the --local-infile=1 option. (Note that this option is ineffective unless the MySQL server allows LOCAL handling.)