The Short Version
I created > one billion InnoDB tables in MySQL 8.0 (tables, not rows) just for fun. Here is the proof:
$ mysql -A
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 1425329
Server version: 8.0.12 MySQL Community Server - GPL
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affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.
mysql> select count(*) from information_schema.tables;
+------------+
| count(*) |
+------------+
| 1011570298 |
+------------+
1 row in set (6 hours 57 min 6.31 sec)Yes, it took 6 hours and 57 minutes to count them all!
