Akanksha-kedia commented on code in PR #17372:
URL: https://github.com/apache/pinot/pull/17372#discussion_r2625630069
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pinot-common/src/main/java/org/apache/pinot/common/function/scalar/StringFunctions.java:
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@@ -632,6 +632,59 @@ public static int hammingDistance(String input1, String
input2) {
return distance;
}
+ /**
+ * Calculates the Levenshtein edit distance between two strings.
+ * The Levenshtein distance is the minimum number of single-character edits
+ * (insertions, deletions, or substitutions) needed to transform one string
into another.
+ * This complements the existing hammingDistance function by handling
strings of different lengths.
+ *
+ * @param input1 First string
+ * @param input2 Second string
+ * @return The Levenshtein distance between the two strings, or -1 if either
input is null
+ */
+ @ScalarFunction
+ public static int levenshteinDistance(String input1, String input2) {
Review Comment:
framework handle.
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