Azure Mysql cli not working? Downgrade your mysql-client

apt remove mysql-client-8.0 mysql-client-core-8.0
apt install mysql-client-8.0=8.0.19* mysql-client-core-8.0=8.0.19*

Good to go!

 

See details here: https://bugs.launchpad.net/ubuntu/+source/mysql-8.0/+bug/1949565