mysql> SHOW VARIABLES LIKE '%char%'; +--------------------------+----------------------------+ | Variable_name | Value | +--------------------------+----------------------------+ | character_set_client | utf8mb4 | | character_set_connection | utf8mb4 | | character_set_database | utf8mb4 | | character_set_filesystem | binary | | character_set_results | utf8mb4 | | character_set_server | utf8mb4 | |
![MySQLにおける文字コードutf8mb4の設定 - Qiita](https://cdn-ak-scissors.b.st-hatena.com/image/square/c1a8678f081a1032a40a5ba99f1d5729f8c2679b/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fcdn.qiita.com%252Fassets%252Fpublic%252Farticle-ogp-background-412672c5f0600ab9a64263b751f1bc81.png%3Fixlib%3Drb-4.0.0%26w%3D1200%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTk3MiZoPTM3OCZ0eHQ9TXlTUUwlRTMlODElQUIlRTMlODElOEElRTMlODElOTElRTMlODIlOEIlRTYlOTYlODclRTUlQUQlOTclRTMlODIlQjMlRTMlODMlQkMlRTMlODMlODl1dGY4bWI0JUUzJTgxJUFFJUU4JUE4JUFEJUU1JUFFJTlBJnR4dC1hbGlnbj1sZWZ0JTJDdG9wJnR4dC1jb2xvcj0lMjMyMTIxMjEmdHh0LWZvbnQ9SGlyYWdpbm8lMjBTYW5zJTIwVzYmdHh0LXNpemU9NTYmcz1jM2VkYWNlZDdiYzQzZWVlMTc1OTJmZWFlM2YwZDgxYQ%26mark-x%3D142%26mark-y%3D57%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZoPTc2Jnc9NzcwJnR4dD0lNDBrOHV3YWxsJnR4dC1jb2xvcj0lMjMyMTIxMjEmdHh0LWZvbnQ9SGlyYWdpbm8lMjBTYW5zJTIwVzYmdHh0LXNpemU9MzYmdHh0LWFsaWduPWxlZnQlMkN0b3Amcz01OWM5Mzk0NzMzNjI3MTEyZTY2MDA0YzM0ODgzYmQxNg%26blend-x%3D142%26blend-y%3D486%26blend-mode%3Dnormal%26s%3D947e0a3bb81b8b77dabca0b447691257)