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”.
|--compress||Compress all information sent between client and server|
|--count||Show the number of rows per table||5.0.6|
|--debug[=debug_options]||Write a debugging log|
|--default-character-set=charset_name||Specify default character set|
|--defaults-extra-file=file_name||Read option file in addition to usual option files|
|--defaults-file=file_name||Read only named option file|
|--defaults-group-suffix=str||Option group suffix value||5.0.10|
|--help||Display help message and exit|
|--host=host_name||Connect to MySQL server on given host|
|--keys||Show table indexes|
|--no-defaults||Read no option files|
|--password[=password]||Password to use when connecting to server|
|--pipe||On Windows, connect to server using named pipe|
|--port=port_num||TCP/IP port number to use for connection|
|--protocol=type||Connection protocol to use|
|--shared-memory-base-name=name||The name of shared memory to use for shared-memory connections|
|--show-table-type||Show a column indicating the table type||5.0.4|
|--socket=path||For connections to localhost, the Unix socket file to use|
|--ssl||Enable SSL for connection|
|--ssl-ca=file_name||Path of file that contains list of trusted SSL CAs|
|--ssl-capath=dir_name||Path of directory that contains trusted SSL CA certificates in PEM format|
|--ssl-cert=file_name||Path of file that contains X509 certificate in PEM format|
|--ssl-cipher=cipher_list||List of permitted ciphers to use for SSL encryption|
|--ssl-key=file_name||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||5.0.23|
|--status||Display extra information about each table|
|--user=user_name,||MySQL user name to use when connecting to server|
|--version||Display version information and exit|
Display a help message and exit.
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
MyISAM tables. This option was added
in MySQL 5.0.6.
Write a debugging log. A typical
debug_options string is
The default is
charset_name as the default
character set. See Section 10.5, “Character Set Configuration”.
Read this option file after the global option file but (on
Unix) before the user option file. As of MySQL 5.0.6, if the
file does not exist or is otherwise inaccessible, an error
file_name is the full
path name to the file.
Use only the given option file. If the file does not exist
or is otherwise inaccessible, an error occurs.
file_name is the full path name
to the file.
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
[mysqlshow_other] groups. This option was
added in MySQL 5.0.10.
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 188.8.131.52, “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 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
VIEW. This option was added in MySQL
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.