SHOW语句有许多形式，用于提供关于数据库、表、列或服务器状态信息的信息。这部分描述了以下内容：

SHOW BINARY LOG STATUS
SHOW BINARY LOGS
SHOW BINLOG EVENTS [IN 'log_name'] [FROM pos] [LIMIT [offset,] row_count]
SHOW {CHARACTER SET | CHARSET} [like_or_where]
SHOW COLLATION [like_or_where]
SHOW [FULL] COLUMNS FROM tbl_name [FROM db_name] [like_or_where]
SHOW CREATE DATABASE db_name
SHOW CREATE EVENT event_name
SHOW CREATE FUNCTION func_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 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 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 RELAYLOG EVENTS [IN 'log_name'] [FROM pos] [LIMIT [offset,] row_count]
SHOW REPLICA STATUS [FOR CHANNEL channel]
SHOW REPLICAS
SHOW [GLOBAL | SESSION] STATUS [like_or_where]
SHOW TABLE STATUS [FROM db_name] [like_or_where]
SHOW [FULL] 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
}

如果SHOW语句的语法包括LIKE 'pattern'部分，那么'pattern'是一个字符串，可以包含SQL中的%和_通配符字符。该模式对输出结果的限制非常有用。

一些SHOW语句还接受一个WHERE子句，提供了更大的灵活性来指定要显示的行。请参阅第28.8节，“SHOW语句的扩展”。

在SHOW语句结果中，用户名和主机名使用反引号（`）进行了引用。

许多MySQL API（如PHP）允许您将SHOW语句的结果视为您将SELECT语句的结果；请参阅第31章，《连接器和API》，或您的API文档获取更多信息。此外，您还可以使用SQL与来自查询的结果进行工作，这些查询是对表在INFORMATION_SCHEMA数据库中的结果，您不能轻松地使用来自SHOW语句的结果。请参阅第28章，《INFORMATION_SCHEMA表》。