mysqlshow

MYSQLSHOW(1)                 MySQL Database System                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. See Section 13.7.5, "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:

           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. For information about option files used by MySQL programs, see
       Section 4.2.2.2, "Using Option Files".

       o   --help, -?  Display a help message and exit.

       o   --bind-address=ip_address On a computer having multiple network
           interfaces, use this option to select which interface to use for
           connecting to the MySQL server.

       o   --character-sets-dir=dir_name The directory where character sets
           are installed. See Section 10.15, "Character Set Configuration".

       o   --compress, -C Compress all information sent between the client and
           the server if possible. See Section 4.2.6, "Connection Compression
           Control".

       o   --count 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.

           This option is available only if MySQL was built using WITH_DEBUG.
           MySQL release binaries provided by Oracle are not built using this
           option.

       o   --debug-check Print some debugging information when the program
           exits.

           This option is available only if MySQL was built using WITH_DEBUG.
           MySQL release binaries provided by Oracle are not built using this
           option.

       o   --debug-info Print debugging information and memory and CPU usage
           statistics when the program exits.

           This option is available only if MySQL was built using WITH_DEBUG.
           MySQL release binaries provided by Oracle are not built using this
           option.

       o   --default-character-set=charset_name Use charset_name as the
           default character set. See Section 10.15, "Character Set
           Configuration".

       o   --default-auth=plugin A hint about which client-side authentication
           plugin to use. See Section 6.2.13, "Pluggable Authentication".

       o   --defaults-extra-file=file_name Read this option file after the
           global option file but (on Unix) before the user option file. If
           the file does not exist or is otherwise inaccessible, an error
           occurs. If file_name is not an absolute path name, it is
           interpreted relative to the current directory.

           For additional information about this and other option-file
           options, see Section 4.2.2.3, "Command-Line Options that Affect
           Option-File Handling".

       o   --defaults-file=file_name Use only the given option file. If the
           file does not exist or is otherwise inaccessible, an error occurs.
           If file_name is not an absolute path name, it is interpreted
           relative to the current directory.

           Exception: Even with --defaults-file, client programs read
           .mylogin.cnf.

           For additional information about this and other option-file
           options, see Section 4.2.2.3, "Command-Line Options that Affect
           Option-File Handling".

       o   --defaults-group-suffix=str Read not only the usual option groups,
           but also groups with the usual names and a suffix of str. For
           example, mysqlshow normally reads the [client] and [mysqlshow]
           groups. If this option is given as --defaults-group-suffix=_other,
           mysqlshow also reads the [client_other] and [mysqlshow_other]
           groups.

           For additional information about this and other option-file
           options, see Section 4.2.2.3, "Command-Line Options that Affect
           Option-File Handling".

       o   --enable-cleartext-plugin Enable the mysql_clear_password cleartext
           authentication plugin. (See Section 6.4.1.6, "Client-Side Cleartext
           Pluggable Authentication".)

           This option was added in MySQL 5.7.10.

       o   --get-server-public-key Request from the server the RSA public key
           that it uses for key pair-based password exchange. This option
           applies to clients that connect to the server using an account that
           authenticates with the caching_sha2_password authentication plugin.
           For connections by such accounts, the server does not send the
           public key to the client unless requested. The option is ignored
           for accounts that do not authenticate with that plugin. It is also
           ignored if RSA-based password exchange is not needed, as is the
           case when the client connects to the server using a secure
           connection.

           If --server-public-key-path=file_name is given and specifies a
           valid public key file, it takes precedence over
           --get-server-public-key.

           For information about the caching_sha2_password plugin, see
           Section 6.4.1.4, "Caching SHA-2 Pluggable Authentication".

           The --get-server-public-key option was added in MySQL 5.7.23.

       o   --host=host_name, -h host_name Connect to the MySQL server on the
           given host.

       o   --keys, -k Show table indexes.

       o   --login-path=name Read options from the named login path in the
           .mylogin.cnf login path file. A "login path" is an option group
           containing options that specify which MySQL server to connect to
           and which account to authenticate as. To create or modify a login
           path file, use the mysql_config_editor utility. See
           mysql_config_editor(1).

           For additional information about this and other option-file
           options, see Section 4.2.2.3, "Command-Line Options that Affect
           Option-File Handling".

       o   --no-defaults Do not read any option files. If program startup
           fails due to reading unknown options from an option file,
           --no-defaults can be used to prevent them from being read.

           The exception is that the .mylogin.cnf file is read in all cases,
           if it exists. This permits passwords to be specified in a safer way
           than on the command line even when --no-defaults is used. To create
           .mylogin.cnf, use the mysql_config_editor utility. See
           mysql_config_editor(1).

           For additional information about this and other option-file
           options, see Section 4.2.2.3, "Command-Line Options that Affect
           Option-File Handling".

       o   --password[=password], -p[password] The password of the MySQL
           account used for connecting to the server. The password value is
           optional. If not given, mysqlshow prompts for one. If given, there
           must be no space between --password= or -p and the password
           following it. If no password option is specified, the default is to
           send no password.

           Specifying a password on the command line should be considered
           insecure. To avoid giving the password on the command line, use an
           option file. See Section 6.1.2.1, "End-User Guidelines for Password
           Security".

           To explicitly specify that there is no password and that mysqlshow
           should not prompt for one, use the --skip-password option.

       o   --pipe, -W On Windows, connect to the server using a named pipe.
           This option applies only if the server was started with the
           named_pipe system variable enabled to support named-pipe
           connections. In addition, the user making the connection must be a
           member of the Windows group specified by the
           named_pipe_full_access_group system variable.

       o   --plugin-dir=dir_name The directory in which to look for plugins.
           Specify this option if the --default-auth option is used to specify
           an authentication plugin but mysqlshow does not find it. See
           Section 6.2.13, "Pluggable Authentication".

       o   --port=port_num, -P port_num For TCP/IP connections, the port
           number to use.

       o   --print-defaults Print the program name and all options that it
           gets from option files.

           For additional information about this and other option-file
           options, see Section 4.2.2.3, "Command-Line Options that Affect
           Option-File Handling".

       o   --protocol={TCP|SOCKET|PIPE|MEMORY} The transport protocol to use
           for connecting to the server. It is useful when the other
           connection parameters normally result in use of a protocol other
           than the one you want. For details on the permissible values, see
           Section 4.2.5, "Connection Transport Protocols".

       o   --secure-auth Do not send passwords to the server in old (pre-4.1)
           format. This prevents connections except for servers that use the
           newer password format.

           As of MySQL 5.7.5, this option is deprecated; expect it to be
           removed in a future MySQL release. It is always enabled and
           attempting to disable it (--skip-secure-auth, --secure-auth=0)
           produces an error. Before MySQL 5.7.5, this option is enabled by
           default but can be disabled.

               Note
               Passwords that use the pre-4.1 hashing method are less secure
               than passwords that use the native password hashing method and
               should be avoided. Pre-4.1 passwords are deprecated and support
               for them was removed in MySQL 5.7.5. For account upgrade
               instructions, see Section 6.4.1.3, "Migrating Away from Pre-4.1
               Password Hashing and the mysql_old_password Plugin".

       o   --server-public-key-path=file_name The path name to a file in PEM
           format containing a client-side copy of the public key required by
           the server for RSA key pair-based password exchange. This option
           applies to clients that authenticate with the sha256_password or
           caching_sha2_password authentication plugin. This option is ignored
           for accounts that do not authenticate with one of those plugins. It
           is also ignored if RSA-based password exchange is not used, as is
           the case when the client connects to the server using a secure
           connection.

           If --server-public-key-path=file_name is given and specifies a
           valid public key file, it takes precedence over
           --get-server-public-key.

           For sha256_password, this option applies only if MySQL was built
           using OpenSSL.

           For information about the sha256_password and caching_sha2_password
           plugins, see Section 6.4.1.5, "SHA-256 Pluggable Authentication",
           and Section 6.4.1.4, "Caching SHA-2 Pluggable Authentication".

           The --server-public-key-path option was added in MySQL 5.7.23.

       o   --shared-memory-base-name=name On Windows, the shared-memory name
           to use for connections made using shared memory to a local server.
           The default value is MYSQL. The shared-memory name is
           case-sensitive.

           This option applies only if the server was started with the
           shared_memory system variable enabled to support shared-memory
           connections.

       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.

           On Windows, this option applies only if the server was started with
           the named_pipe system variable enabled to support named-pipe
           connections. In addition, the user making the connection must be a
           member of the Windows group specified by the
           named_pipe_full_access_group system variable.

       o   --ssl* Options that begin with --ssl specify whether to connect to
           the server using encryption and indicate where to find SSL keys and
           certificates. See the section called "Command Options for Encrypted
           Connections".

       o   --status, -i Display extra information about each table.

       o   --tls-version=protocol_list The permissible TLS protocols for
           encrypted connections. The value is a list of one or more
           comma-separated protocol names. The protocols that can be named for
           this option depend on the SSL library used to compile MySQL. For
           details, see Section 6.3.2, "Encrypted Connection TLS Protocols and
           Ciphers".

           This option was added in MySQL 5.7.10.

       o   --user=user_name, -u user_name The user name of the MySQL account
           to use for 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.

COPYRIGHT
       Copyright (C) 1997, 2021, Oracle and/or its affiliates.

       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 02110-1301 USA or see
       http://www.gnu.org/licenses/.

SEE ALSO
       For more information, please refer to the MySQL Reference Manual, which
       may already be installed locally and which is also available online at
       http://dev.mysql.com/doc/.

AUTHOR
       Oracle Corporation (http://dev.mysql.com/).

MySQL 5.7                         09/06/2021                      MYSQLSHOW(1)
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