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MySQL 8.0 参考手册  / 第 4 章 MySQL 程序  / 4.5 客户端程序  /  4.5.6 mysqlshow — Display Database, Table, and Column Information

4.5.6 mysqlshow — Display Database, Table, and Column Information

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 13.7.5, “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]]]
  • 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] groups of an option file. For information about option files used by MySQL programs, see Section 4.2.2.2, “Using Option Files”.

Table 4.15 mysqlshow Options

Option Name Description Introduced
--bind-address Use specified network interface to connect to MySQL Server
--compress Compress all information sent between client and server
--count Show the number of rows per table
--debug Write 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
--default-character-set Specify default character set
--defaults-extra-file Read named option file in addition to usual option files
--defaults-file Read only named option file
--defaults-group-suffix Option group suffix value
--enable-cleartext-plugin Enable cleartext authentication plugin 5.6.28
--help Display help message and exit
--host Host on which MySQL server is located
--keys Show table indexes
--login-path Read login path options from .mylogin.cnf
--no-defaults Read no option files
--password Password to use when connecting to server
--pipe Connect to server using named pipe (Windows only)
--plugin-dir Directory where plugins are installed
--port TCP/IP port number for connection
--print-defaults Print default options
--protocol Transport protocol to use
--secure-auth Do not send passwords to server in old (pre-4.1) format 5.6.17
--shared-memory-base-name Shared-memory name for shared-memory connections (Windows only)
--show-table-type Show a column indicating the table type
--socket Unix socket file or Windows named pipe to use
--ssl Enable connection encryption
--ssl-ca File that contains list of trusted SSL Certificate Authorities
--ssl-capath Directory that contains trusted SSL Certificate Authority certificate files
--ssl-cert File that contains X.509 certificate
--ssl-cipher Permissible ciphers for connection encryption
--ssl-crl File that contains certificate revocation lists
--ssl-crlpath Directory that contains certificate revocation-list files
--ssl-key File that contains X.509 key
--ssl-mode Desired security state of connection to server 5.6.30
--ssl-verify-server-cert Verify host name against server certificate Common Name identity
--status Display extra information about each table
--user MySQL user name to use when connecting to server
--verbose Verbose mode
--version Display version information and exit