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Data type for primary key

430321Jan 11 2006 — edited Jan 12 2006
Are there any advantages of having a primary key as numeric? Does the performance hamper if I have a primary key as CHAR or VARCHAR etc. Let us keep this discussion restricted to a table with single column as PK. I mean PK doesn't involve multiple columns but the table may have multiple columns.
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Locked on Feb 9 2006
Added on Jan 11 2006
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