mysqlshow - display database, table, and column information
mysqlshow [options] [db_name [tbl_name [col_name]]]
The mysqlshow client can be used to quickly see which databases exist, their tables, or a tables columns or indexes.
mysqlshow provides a command-line interface to several SQL SHOW statements. See Section 13.7.5, SHOW Syntax. The same information can be obtained by using those statements directly. For example, you can issue them from the mysql client program.
Invoke mysqlshow like this:
shell> mysqlshow [options] [db_name [tbl_name [col_name]]]
o If no database is given, a list of database names is shown.
o If no table is given, all matching tables in the database are shown.
o If no column is given, all matching columns and column types in the table are shown.
The output displays only the names of those databases, tables, or columns for which you have some privileges.
If the last argument contains shell or SQL wildcard characters (*, ?, %, or _), only those names that are matched by the wildcard are shown. If a database name contains any underscores, those should be escaped with a backslash (some Unix shells require two) to get a list of the proper tables or columns. * and ? characters are converted into SQL % and _ wildcard characters. This might cause some confusion when you try to display the columns for a table with a _ in the name, because in this case, mysqlshow shows you only the table names that match the pattern. This is easily fixed by adding an extra % last on the command line as a separate argument.
mysqlshow supports the following options, which can be specified on the command line or in the [mysqlshow] and [client] groups of an option file. mysqlshow also supports the options for processing option files described at Section 126.96.36.199, Command-Line Options that Affect Option-File Handling.
o --help, -?
Display a help message and exit.
On a computer having multiple network interfaces, this option can be used to select which interface is employed when connecting to the MySQL server.
This option is supported only in the version of mysqlshow that is supplied with MySQL Cluster. It is not available in standard MySQL Server 5.5 releases.
The directory where character sets are installed. See Section 10.5, Character Set Configuration.
o --compress, -C
Compress all information sent between the client and the server if both support compression.
Show the number of rows per table. This can be slow for non-MyISAM tables.
o --debug[=debug_options], -# [debug_options]
Write a debugging log. A typical debug_options string is d:t:o,file_name. The default is d:t:o.
Print some debugging information when the program exits.
Print debugging information and memory and CPU usage statistics when the program exits.
Use charset_name as the default character set. See Section 10.5, Character Set Configuration.
The client-side authentication plugin to use. See Section 6.3.6, Pluggable Authentication.
This option was added in MySQL 5.5.10.
o --host=host_name, -h host_name
Connect to the MySQL server on the given host.
o --keys, -k
Show table indexes.
o --password[=password], -p[password]
The password to use when connecting to the server. If you use the short option form (-p), you cannot have a space between the option and the password. If you omit the password value following the --password or -p option on the command line, mysqlshow prompts for one.
Specifying a password on the command line should be considered insecure. See Section 188.8.131.52, End-User Guidelines for Password Security. You can use an option file to avoid giving the password on the command line.
o --pipe, -W
On Windows, connect to the server using a named pipe. This option applies only if the server supports named-pipe connections.
The directory in which to look for plugins. It may be necessary to specify this option if the --default-auth option is used to specify an authentication plugin but mysqlshow does not find it. See Section 6.3.6, Pluggable Authentication.
This option was added in MySQL 5.5.10.
o --port=port_num, -P port_num
The TCP/IP port number to use for the connection.
The connection protocol to use for connecting to the server. It is useful when the other connection parameters normally would cause a protocol to be used other than the one you want. For details on the permissible values, see Section 4.2.2, Connecting to the MySQL Server.
o --show-table-type, -t
Show a column indicating the table type, as in SHOW FULL TABLES. The type is BASE TABLE or VIEW.
o --socket=path, -S path
For connections to localhost, the Unix socket file to use, or, on Windows, the name of the named pipe to use.
Options that begin with --ssl specify whether to connect to the server using SSL and indicate where to find SSL keys and certificates. See Section 184.108.40.206, SSL Command Options.
o --status, -i
Display extra information about each table.
o --user=user_name, -u user_name
The MySQL user name to use when connecting to the server.
o --verbose, -v
Verbose mode. Print more information about what the program does. This option can be used multiple times to increase the amount of information.
o --version, -V
Display version information and exit.
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