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Re:Jepsen: MySQL 8.0.34 by evanelias on Tuesday December 19, 2023 @11:03AM (#38697275)
MySQL supports indexing expressions directly, which is effectively the same as indexing an invisible virtual column: https://dev.mysql.com/doc/refman/8.0/en/create-index.html#cr...

MySQL supports "multi-valued indexes" over JSON data, which offer a non-obvious solution for partial indexes, since "index records are not added for empty arrays": https://dev.mysql.com/doc/refman/8.0/en/create-index.html#cr...

MariaDB doesn't support any of this directly yet though: https://www.skeema.io/blog/2023/05/10/mysql-vs-mariadb-schem...

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