MYSQLSHOW(1)

NAME
mysqlshow - display database, table, and column information

SYNOPSIS

mysqlshow [options] [db_name [tbl_name [col_name]]]

DESCRIPTION

The mysqlshow client can be used to quickly see which databases exist, their tables, or a table's columns or indexes.

mysqlshow provides a command-line interface to several SQL SHOW statements. 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]]]

    • If no database is given, a list of database names is shown.

    • If no table is given, all matching tables in the database are shown.

    • 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] option file groups. mysqlshow also supports the options for processing option files described.

    • --help, -?

    Display a help message and exit.

    • --character-sets-dir=path, -c path

    The directory where character sets are installed.

    • --compress, -C

    Compress all information sent between the client and the server if both support compression.

    • --count

    Show the number of rows per table. This can be slow for non-MyISAM tables.

    • --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'.

    • --debug-check

    Print some debugging information when the program exits.

    • --debug-info

    Print debugging information and memory and CPU usage statistics when the program exits.

    • --default-auth=name

    Default authentication client-side plugin to use.

    • --default-character-set=charset_name

    Use charset_name as the default character set.

    • --defaults-extra-file=filename

    Set filename as the file to read default options from after the global defaults files has been read. Must be given as first option.

    • --defaults-file=filename

    Set filename as the file to read default options from, override global defaults files. Must be given as first option.

    • --defaults-group-suffix=suffix

    In addition to the groups named on the command line, read groups that have the given suffix.

    • --host=host_name, -h host_name

    Connect to the MariaDB server on the given host.

    • --keys, -k

    Show table indexes.

    • --no-defaults

    Do not read default options from any option file. This must be given as the first argument.

    • --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. You can use an option file to avoid giving the password on the command line.

    • --pipe, -W

    On Windows, connect to the server via a named pipe. This option applies only if the server supports named-pipe connections.

    • --plugin-dir=dir_name

    Directory for client-side plugins.

    • --port=port_num, -P port_num

    The TCP/IP port number to use for the connection.

    • --protocol={TCP|SOCKET|PIPE|MEMORY}

    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.

    • --print-defaults

    Print the program argument list and exit. This must be given as the first argument.

    • --show-table-type, -t

    Show a column indicating the table type, as in SHOW FULL TABLES. The type is BASE TABLE or VIEW.

    • --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.

    • --ssl

    Enable SSL for connection (automatically enabled with other flags). Disable with --skip-ssl.

    • --ssl-ca=name

    CA file in PEM format (check OpenSSL docs, implies --ssl).

    • --ssl-capath=name

    CA directory (check OpenSSL docs, implies --ssl).

    • --ssl-cert=name

    X509 cert in PEM format (check OpenSSL docs, implies --ssl).

    • --ssl-cipher=name

    SSL cipher to use (check OpenSSL docs, implies --ssl).

    • --ssl-key=name

    X509 key in PEM format (check OpenSSL docs, implies --ssl).

    • --ssl-crl=name

    Certificate revocation list (check OpenSSL docs, implies --ssl).

    • --ssl-crlpath=name

    Certificate revocation list path (check OpenSSL docs, implies --ssl).

    • --ssl-verify-server-cert

    Verify server's "Common Name" in its cert against hostname used when connecting. This option is disabled by default.

    • --status, -i

    Display extra information about each table.

    • --user=user_name, -u user_name

    The MariaDB user name to use when connecting to the server.

    • --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.

    • --version, -V

    Display version information and exit.

COPYRIGHT

Copyright 2007-2008 MySQL AB, 2008-2010 Sun Microsystems, Inc., 2010-2019 MariaDB Foundation

This documentation is free software; you can redistribute it and/or modify it only under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License.

This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with the program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA or see http://www.gnu.org/licenses/.

SEE ALSO
For more information, please refer to the MariaDB Knowledge Base, available online at https://mariadb.com/kb/

AUTHOR
MariaDB Foundation (http://www.mariadb.org/).