Soundex & Str Distance Functions

Method Definition
edit_distance Calculates and returns the Levenshtein distance between the two strings.
jaro_distance Calculates and returns the Jaro distance between two strings.
jaro_winkler_distance Calculates and returns the Jaro-Winkler distance between two strings.
soundex Returns Soundex encoding of varchar strings as a four-character string.
soundex_matches Generates and compares Soundex encodings of two strings and returns the number of the matching characters.