この記事では、mysql のヘルプ コマンドの使用方法を詳しく説明します。非常に詳細であり、次の場合に役立ちます。パートナーは参照することができます
システム ヘルプを表示します
ヘルプ コンテンツ
help contents
mysql> help contents; You asked for help about help category: "Contents" For more information, type 'help <item>', where <item> is one of the following categories: Account Management Administration Compound Statements Data Definition Data Manipulation Data Types Functions Functions and Modifiers for Use with GROUP BY Geographic Features Help Metadata Language Structure Plugins Procedures Storage Engines Table Maintenance Transactions User-Defined Functions Utility
帮助文档的目录列表
查看数据类型
help data types
mysql> help data types; You asked for help about help category: "Data Types" For more information, type 'help <item>', where <item> is one of the following topics: AUTO_INCREMENT BIGINT BINARY BIT BLOB BLOB DATA TYPE BOOLEAN CHAR CHAR BYTE DATE DATETIME DEC DECIMAL DOUBLE DOUBLE PRECISION ENUM FLOAT INT INTEGER LONGBLOB LONGTEXT MEDIUMBLOB MEDIUMINT MEDIUMTEXT SET DATA TYPE SMALLINT TEXT TIME TIMESTAMP TINYBLOB TINYINT TINYTEXT VARBINARY VARCHAR YEAR DATA TYPE
ヘルプデータ型
🎜mysql> help int; Name: 'INT' Description: INT[(M)] [UNSIGNED] [ZEROFILL] A normal-size integer. The signed range is -2147483648 to 2147483647. The unsigned range is 0 to 4294967295. URL: http://dev.mysql.com/doc/refman/5.7/en/numeric-type-overview.html mysql> help tinyint; Name: 'TINYINT' Description: TINYINT[(M)] [UNSIGNED] [ZEROFILL] A very small integer. The signed range is -128 to 127. The unsigned range is 0 to 255. URL: http://dev.mysql.com/doc/refman/5.7/en/numeric-type-overview.html
以上がmysql学習ヘルプドキュメントの詳細な説明の詳細内容です。詳細については、PHP 中国語 Web サイトの他の関連記事を参照してください。