Install default-mysql-client-core by entering the following commands in the terminal:
sudo apt update sudo apt install default-mysql-client-core
MySQL database core client binaries (metapackage)
MySQL is a fast, stable and true multi-user, multi-threaded SQL database server. SQL (Structured Query Language) is the most popular database query language in the world. The main goals of MySQL are speed, robustness and ease of use. . This package depends on the default implementation of the core client files, as used by Akonadi.