Simon Liew

How efficient is your covered index?

Observing an index seek utilizing a composite index within SQL execution plan might be more than meets the eye – you should look again.

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2015-10-09 (first published: 2013-08-12)

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I upgraded a SQL Server 2019 instance to SQL Server 2025. I wanted to test the fuzzy string search functions. I run this code:

SELECT JARO_WINKLER_DISTANCE('tim', 'tom')

I get this error message:

Msg 195, Level 15, State 10, Line 1 'JARO_WINKLER_DISTANCE' is not a recognized built-in function name.

What is wrong?