SHOW has many forms that provide information about databases, tables, columns,
or status information about the server. These include:

* SHOW AUTHORS
* SHOW CHARACTER SET [like_or_where]
* SHOW COLLATION [like_or_where]
* SHOW [FULL] COLUMNS FROM tbl_name [FROM db_name] [like_or_where]
* SHOW CONTRIBUTORS
* SHOW CREATE DATABASE db_name
* SHOW CREATE EVENT event_name
* SHOW CREATE PACKAGE package_name
* SHOW CREATE PACKAGE BODY package_name
* SHOW CREATE PROCEDURE proc_name
* SHOW CREATE TABLE tbl_name
* SHOW CREATE TRIGGER trigger_name
* SHOW CREATE VIEW view_name
* SHOW DATABASES [like_or_where]
* SHOW ENGINE engine_name {STATUS | MUTEX}
* SHOW [STORAGE] ENGINES
* SHOW ERRORS [LIMIT [offset,] row_count]
* SHOW [FULL] EVENTS
* SHOW FUNCTION CODE func_name
* SHOW FUNCTION STATUS [like_or_where]
* SHOW GRANTS FOR user
* SHOW INDEX FROM tbl_name [FROM db_name]
* SHOW INNODB STATUS
* SHOW OPEN TABLES [FROM db_name] [like_or_where]
* SHOW PLUGINS
* SHOW PROCEDURE CODE proc_name
* SHOW PROCEDURE STATUS [like_or_where]
* SHOW PRIVILEGES
* SHOW [FULL] PROCESSLIST
* SHOW PROFILE [types] [FOR QUERY n] [OFFSET n] [LIMIT n]
* SHOW PROFILES
* SHOW [GLOBAL | SESSION] STATUS [like_or_where]
* SHOW TABLE STATUS [FROM db_name] [like_or_where]
* SHOW TABLES [FROM db_name] [like_or_where]
* SHOW TRIGGERS [FROM db_name] [like_or_where]
* SHOW [GLOBAL | SESSION] VARIABLES [like_or_where]
* SHOW WARNINGS [LIMIT [offset,] row_count]

like_or_where:
  LIKE 'pattern'
 | WHERE expr

If the syntax for a given SHOW statement includes a LIKE 'pattern' part,
'pattern' is a string that can contain the SQL "%" and "_" wildcard
characters. The pattern is useful for restricting statement output to matching
values.

Several SHOW statements also accept a WHERE clause that provides more
flexibility in specifying which rows to display. See Extended Show.

URL: https://mariadb.com/kb/en/about-show/