Web Reference: Which of these queries is the faster? NOT EXISTS: SELECT ProductID, ProductName FROM Northwind..Products p WHERE NOT EXISTS ( SELECT 1 FROM Northwind..[Order Details] od WHERE p. Yes; Microsoft themselves recommend using over != specifically for ANSI compliance, e.g. in Microsoft Press training kit for 70-461 exam, "Querying Microsoft SQL Server", they say "As an example of when to choose the standard form, T-SQL supports two “not equal to” operators: and !=. The former is standard and the latter is not. SQL Server uses '+' as a string concatenation operator, for instance. (Of course, the better solution would have been for the poster to simply run the query without the count() to see what it did in the first place instead of posting here.)
YouTube Excerpt: In this session, we will demonstrate the main benefits and best practices of
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Sql Server Always Encrypted Feature Net Worth 2026: Salary, Income & Wealth Net Worth & Biography
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