This function returns a phonetic representation of a string. You can use it to compare words which sounds similar but are spelled different.
- For a description for the algorithm used, see Kölner_Phonetik and Cologne Phonetics.
- The result is a string of digits, whose length has as maximum the double length of the input string.
- This function is similar to SOUNDEX, but is more appropriate for German words.
- To calculate the difference between two strings, you can use the function EDIT_DISTANCE.