INSERT on duplicate UPDATE?

[Yves Goergen]

Hi,
I can vaguely remember there was something like "INSERT... on duplicate 
key UPDATE..." in MySQL, but the documentation search is almost as 
useful as I'm used to - it cannot tell me anything about this. Can you 
please? How does this work, what's the syntax? Is this ANSI-SQL standard 
(or compatible to other DBMS)? Or is it even documented?

-- 
Yves Goergen <nospam.list@stripped>

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