utf8 collations. mysql's utf8mb4_unicode_ci is fantastic for real-world multi-language support. postgresql's utf8 charsets require you to attach a language-spec

utf8 collations. mysql's utf8mb4_unicode_ci is fantastic for real-world multi-language support. postgresql's utf8 charsets require you to attach a language-specific collation. It makes real-world applications impossible to support on potgres.