The short version I created > one billion InnoDB tables in MySQL 8.0 (tables, not rows) just for fun. Here is the proof: [crayon-5bd396a576ec3147620296/] Yes, it took 6 hours and 57 minutes to count them all! Why does anyone need one billion tables? In my previous blog post, I created and tested MySQL 8.0 with 40 [&]

https://www.percona.com/blog/2018/10/22/one-billion-tables-in-mysql-8-0-with-zfs/