結論 Online DDLできない制約にひっかかってた InnoDB tables created before MySQL 5.6 do not support ALTER TABLE ... ALGORITHM=INPLACE for tables that include temporal columns (DATE, DATETIME or TIMESTAMP) and have not been rebuilt using ALTER TABLE ... ALGORITHM=COPY. In this case, an ALTER TABLE ... ALGORITHM=INPLACE operation returns the following error: ERROR 1846 (0A000): ALGORITHM=INPLACE is not supported. Rea
![MySQL5.6にしたのに、Online DDLできない - Qiita](https://cdn-ak-scissors.b.st-hatena.com/image/square/321c776da121c572928bf51de8a6837bf6820a97/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-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTk3MiZoPTM3OCZ0eHQ9TXlTUUw1LjYlRTMlODElQUIlRTMlODElOTclRTMlODElOUYlRTMlODElQUUlRTMlODElQUIlRTMlODAlODFPbmxpbmUlMjBEREwlRTMlODElQTclRTMlODElOEQlRTMlODElQUElRTMlODElODQmdHh0LWFsaWduPWxlZnQlMkN0b3AmdHh0LWNvbG9yPSUyMzIxMjEyMSZ0eHQtZm9udD1IaXJhZ2lubyUyMFNhbnMlMjBXNiZ0eHQtc2l6ZT01NiZzPTQ0ZjU5NzFiZWUwYzVhNDU5ZGRiMDViNzdmNjIxZjBm%26mark-x%3D142%26mark-y%3D57%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZoPTc2Jnc9NzcwJnR4dD0lNDBEaWFudGh1RGlhJnR4dC1jb2xvcj0lMjMyMTIxMjEmdHh0LWZvbnQ9SGlyYWdpbm8lMjBTYW5zJTIwVzYmdHh0LXNpemU9MzYmdHh0LWFsaWduPWxlZnQlMkN0b3Amcz01Yzc3MzI2YWFjOTE2NGU3MjFiNWE4YjFlMjA0ZjhlYQ%26blend-x%3D142%26blend-y%3D486%26blend-mode%3Dnormal%26s%3D879cdfdea3bb85240c71a24965578525)