Обсуждение: Upgrading - How?

Hi All

I have an older version of PostgreSQL installed on my local server, and, as a way to start to become familiar with
PostgreSQL,I'd like to upgrade to the latest version. 

I looked through the online documentation, but I couldn't find anything to do with upgrading.

How are upgrades done? Are they tricky? Would I have to totally uninstall what I have and do a fresh install of the new
version?

Thanks very much.
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