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MYSQL Tutorial

MySQL SOUNDEX() function

SOUNDEX() function

MySQL SOUNDEX() function returns soundex string of a string.

Soundex is a phonetic algorithm for indexing names after English pronunciation of sound. You can use SUBSTRING() on the result to get a standard soundex string. All nonalphabetic characters in str are ignored. All international alphabetic characters outside the A-Z range are treated as vowels.

Syntax:

SOUNDEX(str)

Argument

Name Description
str A string whose SOUNDEX string is to be retrieved.

The SOUNDEX() function has following limitations :

  • This function, as currently implemented, is intended to work well with strings that are in the English language only. Strings in other languages may not produce reliable results.
  • This function is not guaranteed to provide consistent results with strings that use multi-byte character sets, including utf-8.

Syntax Diagram:

MySQL SOUNDEX() Function - Syntax Diagram

MySQL Version: 5.6

Example: MySQL SOUNDEX() function

The following statement returns the SONDEX string of the argument string w3resource. The return value is W6262.

Code:

SELECT SOUNDEX('w3resource'); 

Sample Output:

mysql> SELECT SOUNDEX('w3resource');
+-----------------------+
| SOUNDEX('w3resource') |
+-----------------------+
| W6262                 | 
+-----------------------+
1 row in set (0.00 sec)

All String Functions

MySQL String Functions, slide presentation

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