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 15.7.7, "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 6.2.2.2, "Using Option Files".
o --help, -?
+--------------------+--------+
|Command-Line Format | --help |
+--------------------+--------+
Display a help message and exit.
o --bind-address=ip_address
+--------------------+---------------------------+
|Command-Line Format | --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
+--------------------+---------------------------+
|Command-Line Format | --character-sets-dir=path |
+--------------------+---------------------------+
|Type | String |
+--------------------+---------------------------+
|Default Value | [none] |
+--------------------+---------------------------+
The directory where character sets are installed. See
Section 12.15, "Character Set Configuration".
o --compress, -C
+--------------------+-----------------------+
|Command-Line Format | --compress[={OFF|ON}] |
+--------------------+-----------------------+
|Deprecated | 8.0.18 |
+--------------------+-----------------------+
|Type | Boolean |
+--------------------+-----------------------+
|Default Value | OFF |
+--------------------+-----------------------+
Compress all information sent between the client and the server if
possible. See Section 6.2.8, "Connection Compression Control".
As of MySQL 8.0.18, this option is deprecated. Expect it to be
removed in a future version of MySQL. See the section called
"Configuring Legacy Connection Compression".
o --compression-algorithms=value
+--------------------+-------------------------+
|Command-Line Format | --compression- |
| | algorithms=value |
+--------------------+-------------------------+
|Introduced | 8.0.18 |
+--------------------+-------------------------+
|Type | Set |
+--------------------+-------------------------+
|Default Value | uncompressed |
+--------------------+-------------------------+
|Valid Values | |
| | zlib |
| | |
| | zstd |
| | |
| | uncompressed |
+--------------------+-------------------------+
The permitted compression algorithms for connections to the server.
The available algorithms are the same as for the
protocol_compression_algorithms system variable. The default value
is uncompressed.
For more information, see Section 6.2.8, "Connection Compression
Control".
This option was added in MySQL 8.0.18.
o --count
+--------------------+---------+
|Command-Line Format | --count |
+--------------------+---------+
Show the number of rows per table. This can be slow for non-MyISAM
tables.
o --debug[=debug_options], -# [debug_options]
+--------------------+-------------------------+
|Command-Line Format | --debug[=debug_options] |
+--------------------+-------------------------+
|Type | String |
+--------------------+-------------------------+
|Default Value | d:t:o |
+--------------------+-------------------------+
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
+--------------------+---------------+
|Command-Line Format | --debug-check |
+--------------------+---------------+
|Type | Boolean |
+--------------------+---------------+
|Default Value | FALSE |
+--------------------+---------------+
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
+--------------------+--------------+
|Command-Line Format | --debug-info |
+--------------------+--------------+
|Type | Boolean |
+--------------------+--------------+
|Default Value | FALSE |
+--------------------+--------------+
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
+--------------------+----------------------+
|Command-Line Format | --default-character- |
| | set=charset_name |
+--------------------+----------------------+
|Type | String |
+--------------------+----------------------+
Use charset_name as the default character set. See Section 12.15,
"Character Set Configuration".
o --default-auth=plugin
+--------------------+-----------------------+
|Command-Line Format | --default-auth=plugin |
+--------------------+-----------------------+
|Type | String |
+--------------------+-----------------------+
A hint about which client-side authentication plugin to use. See
Section 8.2.17, "Pluggable Authentication".
o --defaults-extra-file=file_name
+--------------------+-------------------+
|Command-Line Format | --defaults-extra- |
| | file=file_name |
+--------------------+-------------------+
|Type | 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 6.2.2.3, "Command-Line Options that Affect
Option-File Handling".
o --defaults-file=file_name
+--------------------+---------------------------+
|Command-Line Format | --defaults-file=file_name |
+--------------------+---------------------------+
|Type | 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 6.2.2.3, "Command-Line Options that Affect
Option-File Handling".
o --defaults-group-suffix=str
+--------------------+-------------------+
|Command-Line Format | --defaults-group- |
| | suffix=str |
+--------------------+-------------------+
|Type | String |
+--------------------+-------------------+
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 6.2.2.3, "Command-Line Options that Affect
Option-File Handling".
o --enable-cleartext-plugin
+--------------------+---------------------------+
|Command-Line Format | --enable-cleartext-plugin |
+--------------------+---------------------------+
|Type | Boolean |
+--------------------+---------------------------+
|Default Value | FALSE |
+--------------------+---------------------------+
Enable the mysql_clear_password cleartext authentication plugin.
(See Section 8.4.1.4, "Client-Side Cleartext Pluggable
Authentication".)
o --get-server-public-key
+--------------------+-------------------------+
|Command-Line Format | --get-server-public-key |
+--------------------+-------------------------+
|Type | Boolean |
+--------------------+-------------------------+
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 8.4.1.2, "Caching SHA-2 Pluggable Authentication".
o --host=host_name, -h host_name
+--------------------+------------------+
|Command-Line Format | --host=host_name |
+--------------------+------------------+
|Type | String |
+--------------------+------------------+
|Default Value | localhost |
+--------------------+------------------+
Connect to the MySQL server on the given host.
o --keys, -k
+--------------------+--------+
|Command-Line Format | --keys |
+--------------------+--------+
Show table indexes.
o --login-path=name
+--------------------+-------------------+
|Command-Line Format | --login-path=name |
+--------------------+-------------------+
|Type | String |
+--------------------+-------------------+
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 6.2.2.3, "Command-Line Options that Affect
Option-File Handling".
o --no-defaults
+--------------------+---------------+
|Command-Line Format | --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 6.2.2.3, "Command-Line Options that Affect
Option-File Handling".
o --password[=password], -p[password]
+--------------------+-----------------------+
|Command-Line Format | --password[=password] |
+--------------------+-----------------------+
|Type | String |
+--------------------+-----------------------+
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 8.1.2.1, "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 --password1[=pass_val] The password for multifactor authentication
factor 1 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 --password1= 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 8.1.2.1, "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-password1 option.
--password1 and --password are synonymous, as are --skip-password1
and --skip-password.
o --password2[=pass_val] The password for multifactor authentication
factor 2 of the MySQL account used for connecting to the server.
The semantics of this option are similar to the semantics for
--password1; see the description of that option for details.
o --password3[=pass_val] The password for multifactor authentication
factor 3 of the MySQL account used for connecting to the server.
The semantics of this option are similar to the semantics for
--password1; see the description of that option for details.
o --pipe, -W
+--------------------+--------+
|Command-Line Format | --pipe |
+--------------------+--------+
|Type | String |
+--------------------+--------+
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
+--------------------+-----------------------+
|Command-Line Format | --plugin-dir=dir_name |
+--------------------+-----------------------+
|Type | Directory 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 8.2.17,
"Pluggable Authentication".
o --port=port_num, -P port_num
+--------------------+-----------------+
|Command-Line Format | --port=port_num |
+--------------------+-----------------+
|Type | Numeric |
+--------------------+-----------------+
|Default Value | 3306 |
+--------------------+-----------------+
For TCP/IP connections, the port number to use.
o --print-defaults
+--------------------+------------------+
|Command-Line Format | --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 6.2.2.3, "Command-Line Options that Affect
Option-File Handling".
o --protocol={TCP|SOCKET|PIPE|MEMORY}
+--------------------+-------------------+
|Command-Line Format | --protocol=type |
+--------------------+-------------------+
|Type | String |
+--------------------+-------------------+
|Default Value | [see text] |
+--------------------+-------------------+
|Valid Values | |
| | 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 6.2.7, "Connection Transport
Protocols".
o --server-public-key-path=file_name
+--------------------+----------------------+
|Command-Line Format | --server-public-key- |
| | path=file_name |
+--------------------+----------------------+
|Type | 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 8.4.1.3, "SHA-256 Pluggable Authentication",
and Section 8.4.1.2, "Caching SHA-2 Pluggable Authentication".
o --shared-memory-base-name=name
+--------------------+-----------------------+
|Command-Line Format | --shared-memory-base- |
| | name=name |
+--------------------+-----------------------+
|Platform Specific | Windows |
+--------------------+-----------------------+
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
+--------------------+-------------------+
|Command-Line Format | --show-table-type |
+--------------------+-------------------+
Show a column indicating the table type, as in SHOW FULL TABLES.
The type is BASE TABLE or VIEW.
o --socket=path, -S path
+--------------------+--------------------------------+
|Command-Line Format | --socket={file_name|pipe_name} |
+--------------------+--------------------------------+
|Type | String |
+--------------------+--------------------------------+
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 --ssl-fips-mode={OFF|ON|STRICT}
+--------------------+----------------------+
|Command-Line Format | --ssl-fips- |
| | mode={OFF|ON|STRICT} |
+--------------------+----------------------+
|Deprecated | 8.0.34 |
+--------------------+----------------------+
|Type | Enumeration |
+--------------------+----------------------+
|Default Value | OFF |
+--------------------+----------------------+
|Valid Values | |
| | OFF |
| | |
| | ON |
| | |
| | STRICT |
+--------------------+----------------------+
Controls whether to enable FIPS mode on the client side. The
--ssl-fips-mode option differs from other --ssl-xxx options in that
it is not used to establish encrypted connections, but rather to
affect which cryptographic operations to permit. See Section 8.8,
"FIPS Support".
These --ssl-fips-mode values are permitted:
o OFF: Disable FIPS mode.
o ON: Enable FIPS mode.
o STRICT: Enable "strict" FIPS mode.
Note
If the OpenSSL FIPS Object Module is not available, the only
permitted value for --ssl-fips-mode is OFF. In this case,
setting --ssl-fips-mode to ON or STRICT causes the client to
produce a warning at startup and to operate in non-FIPS mode.
As of MySQL 8.0.34, this option is deprecated. Expect it to be
removed in a future version of MySQL.
o --status, -i
+--------------------+----------+
|Command-Line Format | --status |
+--------------------+----------+
Display extra information about each table.
o --tls-ciphersuites=ciphersuite_list
+--------------------+-------------------------------+
|Command-Line Format | --tls- |
| | ciphersuites=ciphersuite_list |
+--------------------+-------------------------------+
|Introduced | 8.0.16 |
+--------------------+-------------------------------+
|Type | String |
+--------------------+-------------------------------+
The permissible ciphersuites for encrypted connections that use
TLSv1.3. The value is a list of one or more colon-separated
ciphersuite names. The ciphersuites that can be named for this
option depend on the SSL library used to compile MySQL. For
details, see Section 8.3.2, "Encrypted Connection TLS Protocols and
Ciphers".
This option was added in MySQL 8.0.16.
o --tls-version=protocol_list
+--------------------------+------------------------------------------+
|Command-Line Format | --tls- |
| | version=protocol_list |
+--------------------------+------------------------------------------+
|Type | String |
+--------------------------+------------------------------------------+
|Default Value (>= 8.0.16) | |
| | TLSv1,TLSv1.1,TLSv1.2,TLSv1.3 |
| | (OpenSSL 1.1.1 |
| | or higher) |
| | |
| | TLSv1,TLSv1.1,TLSv1.2 |
| | (otherwise) |
+--------------------------+------------------------------------------+
|Default Value (<= 8.0.15) | TLSv1,TLSv1.1,TLSv1.2 |
+--------------------------+------------------------------------------+
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 8.3.2,
"Encrypted Connection TLS Protocols and Ciphers".
o --user=user_name, -u user_name
+--------------------+-------------------+
|Command-Line Format | --user=user_name, |
+--------------------+-------------------+
|Type | String |
+--------------------+-------------------+
The user name of the MySQL account to use for connecting to the
server.
o --verbose, -v
+--------------------+-----------+
|Command-Line Format | --verbose |
+--------------------+-----------+
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
+--------------------+-----------+
|Command-Line Format | --version |
+--------------------+-----------+
Display version information and exit.
o --zstd-compression-level=level
+--------------------+----------------------------+
|Command-Line Format | --zstd-compression-level=# |
+--------------------+----------------------------+
|Introduced | 8.0.18 |
+--------------------+----------------------------+
|Type | Integer |
+--------------------+----------------------------+
The compression level to use for connections to the server that use
the zstd compression algorithm. The permitted levels are from 1 to
22, with larger values indicating increasing levels of compression.
The default zstd compression level is 3. The compression level
setting has no effect on connections that do not use zstd
compression.
For more information, see Section 6.2.8, "Connection Compression
Control".
This option was added in MySQL 8.0.18.
COPYRIGHT
Copyright (C) 1997, 2024, 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 8.0 12/13/2024 MYSQLSHOW(1)
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