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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

UNISTR Escape

In SQL Server 2025, I run this command:

SELECT UNISTR('*3041*308A*304C\3068 and good night', '*') as "A Classic";
What is returned? (assume the database has an appropriate collation) A: B: C:

See possible answers