DIFFERENCE function returns a value between 0 and 4 that reflects how close a match there is between the two strings. : DIFFERENCE « String Functions « SQL Server / T-SQL Tutorial

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SQL Server / T-SQL Tutorial » String Functions » DIFFERENCE

12. 4. 1. DIFFERENCE function returns a value between 0 and 4 that reflects how close a match there is between the two strings.


A value of 0 means that the two strings aren't even close.

A value of 4 means a perfect match.





8> DECLARE @STRING_DIFFERENCE1 varchar(6)

9> DECLARE @STRING_DIFFERENCE2 varchar(6)

10> SET @STRING_DIFFERENCE1 = "Dewson"

11> SET @STRING_DIFFERENCE2 = "Joosun"

12> SELECT DIFFERENCE(@STRING_DIFFERENCE1,@STRING_DIFFERENCE2)

13> GO



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          2



(1 rows affected)

12. 4. DIFFERENCE
	12. 4. 1.	DIFFERENCE function returns a value between 0 and 4 that reflects how close a match there is between the two strings.
	12. 4. 2.	Using String Functions to Search for Phonetically Similar Data
	12. 4. 3.	DIFFERENCE() is a wrapper around two SOUNDEX().
	12. 4. 4.	SELECT DIFFERENCE ('Redmond', 'Renton')
	12. 4. 5.	Use SOUNDEX(au_lname) and DIFFERENCE
	12. 4. 6.	DIFFERENCE('Nite', 'Knight')
	12. 4. 7.	Use DIFFERENCE in where clause

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