16.20 - Usage Notes - Teradata Vantage NewSQL Engine

Teradata Vantageā„¢ SQL Functions, Expressions, and Predicates

prodname
Teradata Database
Teradata Vantage NewSQL Engine
vrm_release
16.20
category
Programming Reference
featnum
B035-1145-162K

EDITDISTANCE measures the similarity between two strings. A low number of deletions, insertions, substitutions or transpositions implies a high similarity. The insertions, deletions, substitutions, and transpositions are based on the Damerau-Levenshtein Distance algorithm with modifications for costed operations.

If either string1 or string2 is NULL, the function returns NULL.