Character Sets: Migrating to utf8mb4 with pt_online_schema_change (opens in new tab)

Modern applications often feature the use of data in many different languages. This is often true even of applications that only offer a user facing interface in a single language. Many users may, for example, need to enter names which, although using Latin characters, feature diacritics; in other cases, they may need to enter text which contains Chinese or Japanese characters. Even if a user is capable of using an application localized for only one language, it may be necessary to deal with ...