I have read a number of tutorials on installing MySQL, and I’ve noticed that many of them only discuss installing
mysql-server, whereas some also discuss installing
mysql-client. My main question is: when is it necessary to install
It seems that when I remove
mysql-client from my system, I can still access
mysql-server from the command line (simply by issuing
mysql -u root -p). How is
mysql-server accessible without
mysql-client package is a metapackage with no real files of its own (except for boilerplate copyright, etc.). Its sole purpose is to depend on the actual package containing the latest version of the MySQL client, which in bionic is
mysql-client-5.7. Thus when you instal
mysql-client on any version of Ubuntu, you will get the latest version of MySQL available, and when you upgrade Ubuntu to another major version, MySQL will also be upgraded. Which also means that if you remove this file and leave
mysql-client-5.7 then on upgrade either your client and server versions will be out of sync, or the upgrade will fail with dependency problems.
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