Warning: (3719, 「‘utf8’ is currently an alias for the character set UTF8MB3, which will be replac...

【1】本地版本 Mysql 8.0.12

建立表SQL：

DROP TABLE IF EXISTS students; CREATE TABLE `students` ( `sId` INT(20) UNSIGNED NOT NULL AUTO_INCREMENT, `sName` VARCHAR(100) NOT NULL, `sAge` INT(10) NOT NULL, `sAddr` VARCHAR(200) DEFAULT NULL, `sGrade` INT(10) DEFAULT NULL, `sStuId` VARCHAR(20) DEFAULT NULL, `sSex` INT(10) UNSIGNED DEFAULT NULL, PRIMARY KEY (`sId`), INDEX `idx_name` (`sName`) ) ENGINE=INNODB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8

執行提示警告3719 內容：

Warning: (3719, 「‘utf8’ is currently an alias for the character set UTF8MB3, which will be replaced by UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous.」)

翻譯：

警告：(3719)，「UTF 8」目前是字符集UTF8MB3的別名，在未來的版本中將被UTF8MB4替換。請考慮使用UTF8MB4，以便明確無誤。「)

【2】解決方案

（1）修改my.ini

[client]
port=3306
default-character-set=utf8mb4
[mysqld]
port=3306
character_set_server=utf8mb4
#解壓目錄
basedir=D:\MySql\mysql-8.0.12-winx64\bin
#解壓目錄下data目錄
datadir=D:\MySql\mysql-8.0.12-winx64\data
federated
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

（2）修改建立表語句

DROP TABLE IF EXISTS students; CREATE TABLE `students` ( `sId` INT(20) UNSIGNED NOT NULL AUTO_INCREMENT, `sName` VARCHAR(100) NOT NULL, `sAge` INT(10) NOT NULL, `sAddr` VARCHAR(200) DEFAULT NULL, `sGrade` INT(10) DEFAULT NULL, `sStuId` VARCHAR(20) DEFAULT NULL, `sSex` INT(10) UNSIGNED DEFAULT NULL, PRIMARY KEY (`sId`), INDEX `idx_name` (`sName`) ) ENGINE=INNODB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4

修改默認字符集 ：DEFAULT CHARSET=utf8mb4

再也不提示此警告內容。

 

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