SDU Tools: Jaro Winkler Similarity in SQL Server T-SQL
Our free SDU Tools for developers and DBAs, now includes a very large number of tools, with procedures, functions, and views. The JaroWinklerSimilarity function that we have added calculates the Jaro Winkler similarity for two strings.
It essentially answers the question Do these two short strings probably refer to the same thing, even if they aren’t exactly the same?.
It can be used where typos are common, or characters are transposed, and where prefixes matter more than suffixes. Empty and NULL values on input return NULL.
2026-03-29