1MYSQLSHOW(1) MySQL Database System MYSQLSHOW(1)
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6 mysqlshow - display database, table, and column information
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9 mysqlshow [options] [db_name [tbl_name [col_name]]]
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12 The mysqlshow client can be used to quickly see which databases exist,
13 their tables, or a table's columns or indexes.
14 mysqlshow provides a command-line interface to several SQL SHOW
16 statements. See Section 13.7.7, “SHOW Syntax”. The same information can
17 be obtained by using those statements directly. For example, you can
18 issue them from the mysql client program.
19 Invoke mysqlshow like this:
21 shell> mysqlshow [options] [db_name [tbl_name [col_name]]]
23 · If no database is given, a list of database names is shown.
25 · If no table is given, all matching tables in the database are
27 shown.
28 · If no column is given, all matching columns and column types in the
30 table are shown.
31 The output displays only the names of those databases, tables, or
33 columns for which you have some privileges.
34 If the last argument contains shell or SQL wildcard characters (*, ?,
36 %, or _), only those names that are matched by the wildcard are shown.
37 If a database name contains any underscores, those should be escaped
38 with a backslash (some Unix shells require two) to get a list of the
39 proper tables or columns. * and ? characters are converted into SQL %
40 and _ wildcard characters. This might cause some confusion when you try
41 to display the columns for a table with a _ in the name, because in
42 this case, mysqlshow shows you only the table names that match the
43 pattern. This is easily fixed by adding an extra % last on the command
44 line as a separate argument.
45 mysqlshow supports the following options, which can be specified on the
47 command line or in the [mysqlshow] and [client] groups of an option
48 file. For information about option files used by MySQL programs, see
49 Section 4.2.2.2, “Using Option Files”.
50 · --help, -?
52 Display a help message and exit.
54 · --bind-address=ip_address
56 On a computer having multiple network interfaces, use this option
58 to select which interface to use for connecting to the MySQL
59 server.
60 · --character-sets-dir=dir_name
62 The directory where character sets are installed. See
64 Section 10.15, “Character Set Configuration”.
65 · --compress, -C
67 Compress all information sent between the client and the server if
69 possible. See Section 4.2.6, “Connection Compression Control”.
70 As of MySQL 8.0.18, this option is deprecated. It will be removed
72 in a future MySQL version. See the section called “Legacy
73 Connection Compression Configuration”.
74 · --compression-algorithms=value The permitted compression algorithms
76 for connections to the server. The available algorithms are the
77 same as for the protocol_compression_algorithms system variable.
78 The default value is uncompressed.
79 For more information, see Section 4.2.6, “Connection Compression
81 Control”.
82 This option was added in MySQL 8.0.18.
84 · --count
86 Show the number of rows per table. This can be slow for non-MyISAM
88 tables.
89 · --debug[=debug_options], -# [debug_options]
91 Write a debugging log. A typical debug_options string is
93 d:t:o,file_name. The default is d:t:o.
94 · --debug-check
96 Print some debugging information when the program exits.
98 · --debug-info
100 Print debugging information and memory and CPU usage statistics
102 when the program exits.
103 · --default-character-set=charset_name
105 Use charset_name as the default character set. See Section 10.15,
107 “Character Set Configuration”.
108 · --default-auth=plugin
110 A hint about which client-side authentication plugin to use. See
112 Section 6.2.17, “Pluggable Authentication”.
113 · --defaults-extra-file=file_name
115 Read this option file after the global option file but (on Unix)
117 before the user option file. If the file does not exist or is
118 otherwise inaccessible, an error occurs. file_name is interpreted
119 relative to the current directory if given as a relative path name
120 rather than a full path name.
121 For additional information about this and other option-file
123 options, see Section 4.2.2.3, “Command-Line Options that Affect
124 Option-File Handling”.
125 · --defaults-file=file_name
127 Use only the given option file. If the file does not exist or is
129 otherwise inaccessible, an error occurs. file_name is interpreted
130 relative to the current directory if given as a relative path name
131 rather than a full path name.
132 Exception: Even with --defaults-file, client programs read
134 .mylogin.cnf.
135 For additional information about this and other option-file
137 options, see Section 4.2.2.3, “Command-Line Options that Affect
138 Option-File Handling”.
139 · --defaults-group-suffix=str
141 Read not only the usual option groups, but also groups with the
143 usual names and a suffix of str. For example, mysqlshow normally
144 reads the [client] and [mysqlshow] groups. If the
145 --defaults-group-suffix=_other option is given, mysqlshow also
146 reads the [client_other] and [mysqlshow_other] groups.
147 For additional information about this and other option-file
149 options, see Section 4.2.2.3, “Command-Line Options that Affect
150 Option-File Handling”.
151 · --enable-cleartext-plugin
153 Enable the mysql_clear_password cleartext authentication plugin.
155 (See Section 6.4.1.4, “Client-Side Cleartext Pluggable
156 Authentication”.)
157 · --get-server-public-key
159 Request from the server the RSA public key that it uses for key
161 pair-based password exchange. This option applies to clients that
162 connect to the server using an account that authenticates with the
163 caching_sha2_password authentication plugin. For connections by
164 such accounts, the server does not send the public key to the
165 client unless requested. The option is ignored for accounts that do
166 not authenticate with that plugin. It is also ignored if RSA-based
167 password exchange is not needed, as is the case when the client
168 connects to the server using a secure connection.
169 If --server-public-key-path=file_name is given and specifies a
171 valid public key file, it takes precedence over
172 --get-server-public-key.
173 For information about the caching_sha2_password plugin, see
175 Section 6.4.1.3, “Caching SHA-2 Pluggable Authentication”.
176 · --host=host_name, -h host_name
178 Connect to the MySQL server on the given host.
180 · --keys, -k
182 Show table indexes.
184 · --login-path=name
186 Read options from the named login path in the .mylogin.cnf login
188 path file. A “login path” is an option group containing options
189 that specify which MySQL server to connect to and which account to
190 authenticate as. To create or modify a login path file, use the
191 mysql_config_editor utility. See mysql_config_editor(1).
192 For additional information about this and other option-file
194 options, see Section 4.2.2.3, “Command-Line Options that Affect
195 Option-File Handling”.
196 · --no-defaults
198 Do not read any option files. If program startup fails due to
200 reading unknown options from an option file, --no-defaults can be
201 used to prevent them from being read.
202 The exception is that the .mylogin.cnf file, if it exists, is read
204 in all cases. This permits passwords to be specified in a safer way
205 than on the command line even when --no-defaults is used.
206 (.mylogin.cnf is created by the mysql_config_editor utility. See
207 mysql_config_editor(1).)
208 For additional information about this and other option-file
210 options, see Section 4.2.2.3, “Command-Line Options that Affect
211 Option-File Handling”.
212 · --password[=password], -p[password]
214 The password of the MySQL account used for connecting to the
216 server. The password value is optional. If not given, mysqlshow
217 prompts for one. If given, there must be no space between
218 --password= or -p and the password following it. If no password
219 option is specified, the default is to send no password.
220 Specifying a password on the command line should be considered
222 insecure. To avoid giving the password on the command line, use an
223 option file. See Section 6.1.2.1, “End-User Guidelines for Password
224 Security”.
225 To explicitly specify that there is no password and that mysqlshow
227 should not prompt for one, use the --skip-password option.
228 · --pipe, -W
230 On Windows, connect to the server using a named pipe. This option
232 applies only if the server was started with the named_pipe system
233 variable enabled to support named-pipe connections. In addition,
234 the user making the connection must be a member of the Windows
235 group specified by the named_pipe_full_access_group system
236 variable.
237 · --plugin-dir=dir_name
239 The directory in which to look for plugins. Specify this option if
241 the --default-auth option is used to specify an authentication
242 plugin but mysqlshow does not find it. See Section 6.2.17,
243 “Pluggable Authentication”.
244 · --port=port_num, -P port_num
246 For TCP/IP connections, the port number to use.
248 · --print-defaults
250 Print the program name and all options that it gets from option
252 files.
253 For additional information about this and other option-file
255 options, see Section 4.2.2.3, “Command-Line Options that Affect
256 Option-File Handling”.
257 · --protocol={TCP|SOCKET|PIPE|MEMORY}
259 The connection protocol to use for connecting to the server. It is
261 useful when the other connection parameters normally result in use
262 of a protocol other than the one you want. For details on the
263 permissible values, see Section 4.2.4, “Connecting to the MySQL
264 Server Using Command Options”.
265 · --secure-auth
267 This option was removed in MySQL 8.0.3.
269 · --server-public-key-path=file_name
271 The path name to a file containing a client-side copy of the public
273 key required by the server for RSA key pair-based password
274 exchange. The file must be in PEM format. This option applies to
275 clients that authenticate with the sha256_password or
276 caching_sha2_password authentication plugin. This option is ignored
277 for accounts that do not authenticate with one of those plugins. It
278 is also ignored if RSA-based password exchange is not used, as is
279 the case when the client connects to the server using a secure
280 connection.
281 If --server-public-key-path=file_name is given and specifies a
283 valid public key file, it takes precedence over
284 --get-server-public-key.
285 For sha256_password, this option applies only if MySQL was built
287 using OpenSSL.
288 For information about the sha256_password and caching_sha2_password
290 plugins, see Section 6.4.1.2, “SHA-256 Pluggable Authentication”,
291 and Section 6.4.1.3, “Caching SHA-2 Pluggable Authentication”.
292 · --shared-memory-base-name=name
294 On Windows, the shared-memory name to use for connections made
296 using shared memory to a local server. The default value is MYSQL.
297 The shared-memory name is case-sensitive.
298 This option applies only if the server was started with the
300 shared_memory system variable enabled to support shared-memory
301 connections.
302 · --show-table-type, -t
304 Show a column indicating the table type, as in SHOW FULL TABLES.
306 The type is BASE TABLE or VIEW.
307 · --socket=path, -S path
309 For connections to localhost, the Unix socket file to use, or, on
311 Windows, the name of the named pipe to use.
312 On Windows, this option applies only if the server was started with
314 the named_pipe system variable enabled to support named-pipe
315 connections. In addition, the user making the connection must be a
316 member of the Windows group specified by the
317 named_pipe_full_access_group system variable.
318 · --ssl*
320 Options that begin with --ssl specify whether to connect to the
322 server using SSL and indicate where to find SSL keys and
323 certificates. See the section called “Command Options for Encrypted
324 Connections”.
325 · --ssl-fips-mode={OFF|ON|STRICT} Controls whether to enable FIPS
327 mode on the client side. The --ssl-fips-mode option differs from
328 other --ssl-xxx options in that it is not used to establish
329 encrypted connections, but rather to affect which cryptographic
330 operations are permitted. See Section 6.5, “FIPS Support”.
331 These --ssl-fips-mode values are permitted:
333 · OFF: Disable FIPS mode.
335 · ON: Enable FIPS mode.
337 · STRICT: Enable “strict” FIPS mode.
339 Note
342 If the OpenSSL FIPS Object Module is not available, the only
343 permitted value for --ssl-fips-mode is OFF. In this case,
344 setting --ssl-fips-mode to ON or STRICT causes the client to
345 produce a warning at startup and to operate in non-FIPS mode.
346 · --status, -i
348 Display extra information about each table.
350 · --tls-ciphersuites=ciphersuite_list
352 The permissible ciphersuites for encrypted connections that use
354 TLSv1.3. The value is a list of one or more colon-separated
355 ciphersuite names. The ciphersuites that can be named for this
356 option depend on the SSL library used to compile MySQL. For
357 details, see Section 6.3.2, “Encrypted Connection TLS Protocols and
358 Ciphers”.
359 This option was added in MySQL 8.0.16.
361 · --tls-version=protocol_list
363 The permissible TLS protocols for encrypted connections. The value
365 is a list of one or more comma-separated protocol names. The
366 protocols that can be named for this option depend on the SSL
367 library used to compile MySQL. For details, see Section 6.3.2,
368 “Encrypted Connection TLS Protocols and Ciphers”.
369 · --user=user_name, -u user_name
371 The user name of the MySQL account to use for connecting to the
373 server.
374 · --verbose, -v
376 Verbose mode. Print more information about what the program does.
378 This option can be used multiple times to increase the amount of
379 information.
380 · --version, -V
382 Display version information and exit.
384 · --zstd-compression-level=level The compression level to use for
386 connections to the server that use the zstd compression algorithm.
387 The permitted levels are from 1 to 22, with larger values
388 indicating increasing levels of compression. The default zstd
389 compression level is 3. The compression level setting has no effect
390 on connections that do not use zstd compression.
391 For more information, see Section 4.2.6, “Connection Compression
393 Control”.
394 This option was added in MySQL 8.0.18.
396
398 Copyright © 1997, 2019, Oracle and/or its affiliates. All rights
399 reserved.
400 This documentation is free software; you can redistribute it and/or
402 modify it only under the terms of the GNU General Public License as
403 published by the Free Software Foundation; version 2 of the License.
404 This documentation is distributed in the hope that it will be useful,
406 but WITHOUT ANY WARRANTY; without even the implied warranty of
407 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
408 General Public License for more details.
409 You should have received a copy of the GNU General Public License along
411 with the program; if not, write to the Free Software Foundation, Inc.,
412 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see
413 http://www.gnu.org/licenses/.
414
417 For more information, please refer to the MySQL Reference Manual, which
418 may already be installed locally and which is also available online at
419 http://dev.mysql.com/doc/.
420
422 Oracle Corporation (http://dev.mysql.com/).
423MySQL 8.0 09/06/2019 MYSQLSHOW(1)