char

Sherlee Dizon looks at the basic differences between char, nchar, varchar, and nvarchar, as well as what to be aware of when using each data type.

2016-07-21

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Generate script to change column length of string datatypes in a DB

This script can be used to generate alter column length of any string data type column(s) in a database.

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2011-12-27 (first published: 2011-11-22)

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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?