Hello !
I'm a database-newbee. What I need is a column that makes the record
unique. The content should be generated autoamtically and it should be
able to get a lot of records (BIGINT would be nice). But I don't know if
I should use PRIMERY KEY, KEY, INDEX or UNIQUE. Perhaps some could tell
me the difference and what would be best for my purpose.
Thanks a lot !
Martin
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