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
See Section 13.7.5, “SHOW Syntax”. 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:
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
_”), 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
?” characters are converted
into SQL “
_” 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
groups of an option file. For information about option files
used by MySQL programs, see Section 4.2.6, “Using Option Files”.
|--bind-address||Use specified network interface to connect to MySQL Server||5.5.8|
|--compress||Compress all information sent between client and server|
|--count||Show the number of rows per table|
|--debug||Write a debugging log|
|--debug-check||Print debugging information when program exits|
|--debug-info||Print debugging information, memory, and CPU statistics when program exits|
|--default-auth||Authentication plugin to use||5.5.10|
|--default-character-set||Specify default character set|
|--defaults-extra-file||Read option file in addition to usual option files|
|--defaults-file||Read only named option file|
|--defaults-group-suffix||Option group suffix value|
|--help||Display help message and exit|
|--host||Connect to MySQL server on given host|
|--keys||Show table indexes|
|--no-defaults||Read no option files|
|--password||Password to use when connecting to server|
|--pipe||On Windows, connect to server using named pipe|
|--plugin-dir||Directory where plugins are installed||5.5.10|
|--port||TCP/IP port number to use for connection|
|--protocol||Connection protocol to use|
|--shared-memory-base-name||The name of shared memory to use for shared-memory connections|
|--show-table-type||Show a column indicating the table type|
|--socket||For connections to localhost, the Unix socket file to use|
|--ssl||Enable SSL for connection|
|--ssl-ca||Path of file that contains list of trusted SSL CAs|
|--ssl-capath||Path of directory that contains trusted SSL CA certificates in PEM format|
|--ssl-cert||Path of file that contains X509 certificate in PEM format|
|--ssl-cipher||List of permitted ciphers to use for SSL encryption|
|--ssl-key||Path of file that contains X509 key in PEM format|
|--ssl-verify-server-cert||Verify server Common Name value in its certificate against host name used when connecting to server|
|--status||Display extra information about each table|
|--user||MySQL user name to use when connecting to server|
|--version||Display version information and exit|
Display a help message and exit.
On a computer having multiple network interfaces, use this option to select which interface to use for connecting to the MySQL server.
This option is supported only in the version of mysqlshow that is supplied with MySQL Cluster. It is not available in standard MySQL Server 5.5 releases.
The directory where character sets are installed. See Section 10.5, “Character Set Configuration”.
Compress all information sent between the client and the server if both support compression.
Show the number of rows per table. This can be slow for
Write a debugging log. A typical
debug_options string is
The default is
Print some debugging information when the program exits.
Print debugging information and memory and CPU usage statistics when the program exits.
charset_name as the default
character set. See Section 10.5, “Character Set Configuration”.
A hint about the client-side authentication plugin to use. See Section 6.3.6, “Pluggable Authentication”.
This option was added in MySQL 5.5.10.
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. Before
file_name must be
the full path name to the file. As of MySQL 5.5.8, the name
is interpreted relative to the current directory if given as
a relative path name.
Use only the given option file. If the file does not exist
or is otherwise inaccessible, an error occurs. Before MySQL
file_name must be the full
path name to the file. As of MySQL 5.5.8, the name is
interpreted relative to the current directory if given as a
relative path name.
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
[mysqlshow] groups. If the
option is given, mysqlshow also reads the
Connect to the MySQL server on the given host.
Show table indexes.
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 password to use when connecting to the server. If you
use the short option form (
cannot have a space between the option
and the password. If you omit the
password value following the
-p option on the command line,
mysqlshow prompts for one.
Specifying a password on the command line should be considered insecure. See Section 184.108.40.206, “End-User Guidelines for Password Security”. You can use an option file to avoid giving the password on the command line.
On Windows, connect to the server using a named pipe. This option applies only if the server supports named-pipe connections.
The directory in which to look for plugins. It may be
necessary to specify this option if the
--default-auth option is
used to specify an authentication plugin but
mysqlshow does not find it. See
Section 6.3.6, “Pluggable Authentication”.
This option was added in MySQL 5.5.10.
The TCP/IP port number to use for the connection.
Print the program name and all options that it gets from option files.
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. For details on the permissible values, see Section 4.2.2, “Connecting to the MySQL Server”.
On Windows, the shared-memory name to use, for connections
made using shared memory to a local server. The default
MYSQL. The shared-memory name is
The server must be started with the
--shared-memory option to
enable shared-memory connections.
Show a column indicating the table type, as in
TABLES. The type is
For connections to
localhost, the Unix
socket file to use, or, on Windows, the name of the named
pipe to use.
Display extra information about each table.
The MySQL user name to use when connecting to the server.
Verbose mode. Print more information about what the program does. This option can be used multiple times to increase the amount of information.
Display version information and exit.