title: Why does Single LINQ extension method create a query Select TOP(2)?
body: <p>I was looking at my profiler and it seem that the Linq extension method <code>Single</code> selects 2 rows. So why does the <code>Single</code> LINQ extension method create a query <code>Select TOP(2)</code>? Shouldn't it be <code>select top(1)</code> instead?</p>