Allright for some time, while building a website's proven to be quite complex, i've come to the bitter conclusion that mysql doesn't support multiple primary keys. But the thing is, as i kind of tried to move over from this shock, i started to realise that this doesn't change a thing, practically speaking. Coz theorically you can filter everything after the "where" word in a query. But then, WHY is it good at all to mark one field as a primary at all?
primary keys, any use?
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