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Convert Implicit and the related performance issues with SQL Server

I was a running a routine query using an equal operator on the only column of the primary key for a table and I noticed that the performance was terrible. These queries should have been flying because all I was doing was retrieving one row of data which should have been doing an index seek. When I looked at the query plan it was doing a scan instead. This tip shows you what I found and how to resolve the problem.

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Question of the Day

Identities and Sequences V

When thinking about the identity property and sequence objects, which of these can generate values before an insert statement is executed?

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