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Insert new (but make sure not exist)


siwelis

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I'm really not sure what AC is... Unless you're talking about Auto Column (auto-increment?)... Hopefully I'm mistaken, but doesn't Auto Increment force unique ID?

 

Either way, I tried setting it as an auto increment to try experimenting with a non-unique auto-incrementand I was given this error

#1075 - Incorrect table definition; there can be only one auto column and it must be defined as a key 

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