LevenshteinDist() returns the Levenshtein distance between two strings. It is defined as the minimum number of single-character edits (insertions, deletions, or substitutions) required to change one string into the other. The function is useful for fuzzy string comparisons.
Syntax:
LevenshteinDist(text1, text2)
Return data type: integer
| Example | Result |
|---|---|
| LevenshteinDist('Kitten','Sitting') | Returns '3' |
Load script
T1:
Load *, recno() as ID;
Load 'Silver' as String_1,* inline [
String_2
Sliver
SSiver
SSiveer ];
T1:
Load *, recno()+3 as ID;
Load 'Gold' as String_1,* inline [
String_2
Bold
Bool
Bond ];
T1:
Load *, recno()+6 as ID;
Load 'Ove' as String_1,* inline [
String_2
Ove
Uve
Üve ];
T1:
Load *, recno()+9 as ID;
Load 'ABC' as String_1,* inline [
String_2
DEFG
abc
ビビビ ];
set nullinterpret = '<NULL>';
T1:
Load *, recno()+12 as ID;
Load 'X' as String_1,* inline [
String_2
''
<NULL>
1 ];
R1:
Load
ID,
String_1,
String_2,
LevenshteinDist(String_1, String_2) as LevenshteinDistance
resident T1;
Drop table T1;
Result
| ID | String_1 | String_2 | LevenshteinDistance |
|---|---|---|---|
| 1 | Silver | Sliver | 2 |
| 2 | Silver | SSiver | 2 |
| 3 | Silver | SSiveer | 3 |
| 4 | Gold | Bold | 1 |
| 5 | Gold | Bool | 3 |
| 6 | Gold | Bond | 2 |
| 7 | Ove | Ove | 0 |
| 8 | Ove | Uve | 1 |
| 9 | Ove | Üve | 1 |
| 10 | ABC | DEFG | 4 |
| 11 | ABC | abc | 3 |
| 12 | ABC | ビビビ | 3 |
| 13 | X | 1 | |
| 14 | X | - | 1 |
| 15 | X | 1 | 1 |