Should I design a table with a primary key of varchar or int?

Question

I know this is subjective, but I\'d like to know peoples opinions and hopefully some best practices that I can apply when designing sql server table structures.

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Answer 1

With PostgreSQL I generally use the "Serial" or "BigSerial" 'data type' for generating primary keys. The values are auto incremented and I always find integers to be easy to work with. They are essentially equivalent to a MySQL integer field that is set to "auto_increment".