Mikhail,

>Is it possible or makes sense to key a field that is a part of Unique
>Index already?

MySQL won't stop you, but it's a waste of space & cpu cycles unless there's a high-priority query performance need for it.

PB

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Mikhail Berman wrote:

Hello everyone,
 
Is it possible or  makes sense to key a field that is a part of Unique
Index already?
 
Regards and thank you
 
Mikhail Berman


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