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4.2.5 Using Options on the Command Line
Program options specified on the command line follow these rules:
Options are given after the command name.
An option argument begins with one dash or two dashes, depending on whether it is a short form or long form of the option name. Many options have both short and long forms. For example,
-?and--helpare the short and long forms of the option that instructs a MySQL program to display its help message.Option names are case-sensitive.
-vand-Vare both legal and have different meanings. (They are the corresponding short forms of the--verboseand--versionoptions.)Some options take a value following the option name. For example,
-h localhostor--host=localhostindicate the MySQL server host to a client program. The option value tells the program the name of the host where the MySQL server is running.For a long option that takes a value, separate the option name and the value by an
=sign. For a short option that takes a value, the option value can immediately follow the option letter, or there can be a space between:-hlocalhostand-h localhostare equivalent. An exception to this rule is the option for specifying your MySQL password. This option can be given in long form as--password=or aspass_val--password. In the latter case (with no password value given), the program prompts you for the password. The password option also may be given in short form as-por aspass_val-p. However, for the short form, if the password value is given, it must follow the option letter with no intervening space. The reason for this is that if a space follows the option letter, the program has no way to tell whether a following argument is supposed to be the password value or some other kind of argument. Consequently, the following two commands have two completely different meanings:shell> mysql -ptest shell> mysql -p testThe first command instructs mysql to use a password value of
test, but specifies no default database. The second instructs mysql to prompt for the password value and to usetestas the default database.Within option names, dash (
-) and underscore (_) may be used interchangeably. For example,--skip-grant-tablesand--skip_grant_tablesare equivalent. (However, the leading dashes cannot be given as underscores.)For options that take a numeric value, the value can be given with a suffix of
K,M, orGto indicate a multiplier of 1024, 10242 or 10243. As of MySQL 8.0.14, a suffix can also beT,P, andEto indicate a multiplier of 10244, 10245 or 10246. Suffix letters can be uppercase or lowercase.For example, the following command tells mysqladmin to ping the server 1024 times, sleeping 10 seconds between each ping:
shell> mysqladmin --count=1K --sleep=10 pingWhen specifying file names as option values, avoid the use of the
~shell metacharacter because it might not be interpreted as you expect.
Option values that contain spaces must be quoted when given on the
command line. For example, the
--execute (or -e)
option can be used with mysql to pass SQL
statements to the server. When this option is used,
mysql executes the statements in the option
value and exits. The statements must be enclosed by quotation
marks. For example, you can use the following command to obtain a
list of user accounts:
shell> mysql -u root -p --execute="SELECT User, Host FROM mysql.user"
Enter password: ******
+------+-----------+
| User | Host |
+------+-----------+
| | gigan |
| root | gigan |
| | localhost |
| jon | localhost |
| root | localhost |
+------+-----------+
shell>
The long form (--execute) is
followed by an equals sign (=).
If you wish to use quoted values within a statement, you will either need to escape the inner quotation marks, or use a different type of quotation marks within the statement from those used to quote the statement itself. The capabilities of your command processor dictate your choices for whether you can use single or double quotation marks and the syntax for escaping quote characters. For example, if your command processor supports quoting with single or double quotation marks, you can use double quotation marks around the statement, and single quotation marks for any quoted values within the statement.
Multiple SQL statements may be passed in the option value on the command line, separated by semicolons:
shell> mysql -u root -p -e "SELECT VERSION();SELECT NOW()"
Enter password: ******
+------------+
| VERSION() |
+------------+
| 8.0.11 |
+------------+
+---------------------+
| NOW() |
+---------------------+
| 2018-08-05 20:00:20 |
+---------------------+Traduction non disponible
Le manuel MySQL n'est pas encore traduit en français sur l'infobrol. Seule la version anglaise est disponible pour l'instant.
Document créé le 26/06/2006, dernière modification le 26/10/2018
Source du document imprimé : https://www.gaudry.be/mysql-rf-command-line-options.html
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