seshu67 (8/7/2012)
Can a table have two primary keys
Absolutely no, period. The fact that separate unique constraints can be defined does not make them primary keys as well.
Similarly, a table could have 999 unique constraints that didn't allow nulls but not have a primary key.
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".