MYSQLSHOW(1)                                          MariaDB 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. 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., 2010-2015 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/).

MariaDB 10.3                                                 9 May 2017                                                MYSQLSHOW(1)

mysqlshow  Ver 9.10 Distrib 10.3.34-MariaDB, for debian-linux-gnu (x86_64)
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Shows the structure of a MySQL database (databases, tables, and columns).

Usage: mysqlshow [OPTIONS] [database [table [column]]]

If last argument contains a shell or SQL wildcard (*,?,% or _) then only
what's matched by the wildcard is shown.
If no database is given then all matching databases are shown.
If no table is given, then all matching tables in database are shown.
If no column is given, then all matching columns and column types in table
are shown.

Default options are read from the following files in the given order:
/etc/my.cnf /etc/mysql/my.cnf ~/.my.cnf 
The following groups are read: mysqlshow client client-server client-mariadb
The following options may be given as the first argument:
--print-defaults          Print the program argument list and exit.
--no-defaults             Don't read default options from any option file.
The following specify which files/extra groups are read (specified before remaining options):
--defaults-file=#         Only read default options from the given file #.
--defaults-extra-file=#   Read this file after the global files are read.
--defaults-group-suffix=# Additionally read default groups with # appended as a suffix.

  -c, --character-sets-dir=name 
                      Directory for character set files.
  --default-character-set=name 
                      Set the default character set.
  --count             Show number of rows per table (may be slow for non-MyISAM
                      tables).
  -C, --compress      Use compression in server/client protocol.
  -#, --debug[=name]  Output debug log. Often this is 'd:t:o,filename'.
  --debug-check       Check memory and open file usage at exit.
  --debug-info        Print some debug info at exit.
  --default-auth=name Default authentication client-side plugin to use.
  -?, --help          Display this help and exit.
  -h, --host=name     Connect to host.
  -i, --status        Shows a lot of extra information about each table.
  -k, --keys          Show keys for table.
  -p, --password[=name] 
                      Password to use when connecting to server. If password is
                      not given, it's solicited on the tty.
  --plugin-dir=name   Directory for client-side plugins.
  -P, --port=#        Port number to use for connection or 0 for default to, in
                      order of preference, my.cnf, $MYSQL_TCP_PORT,
                      /etc/services, built-in default (3306).
  --protocol=name     The protocol to use for connection (tcp, socket, pipe,
                      memory).
  -t, --show-table-type 
                      Show table type column.
  -S, --socket=name   The socket file to use for connection.
  --ssl               Enable SSL for connection (automatically enabled with
                      other flags).
  --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 (implies --ssl).
  --ssl-cipher=name   SSL cipher to use (implies --ssl).
  --ssl-key=name      X509 key in PEM format (implies --ssl).
  --ssl-crl=name      Certificate revocation list (implies --ssl).
  --ssl-crlpath=name  Certificate revocation list path (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.
  -u, --user=name     User for login if not current user.
  -v, --verbose       More verbose output; you can use this multiple times to
                      get even more verbose output.
  -V, --version       Output version information and exit.

Variables (--variable-name=value)
and boolean options {FALSE|TRUE}  Value (after reading options)
--------------------------------- ----------------------------------------
character-sets-dir                (No default value)
default-character-set             utf8mb4
count                             FALSE
compress                          FALSE
debug-check                       FALSE
debug-info                        FALSE
default-auth                      (No default value)
host                              (No default value)
status                            FALSE
keys                              FALSE
plugin-dir                        (No default value)
port                              0
show-table-type                   FALSE
socket                            /var/run/mysqld/mysqld.sock
ssl                               FALSE
ssl-ca                            (No default value)
ssl-capath                        (No default value)
ssl-cert                          (No default value)
ssl-cipher                        (No default value)
ssl-key                           (No default value)
ssl-crl                           (No default value)
ssl-crlpath                       (No default value)
ssl-verify-server-cert            FALSE
user                              (No default value)