LevenshteinDist() devuelve la distancia Levenshtein entre dos cadenas. Se define como el número mínimo de ediciones de un solo carácter (inserciones, eliminaciones o sustituciones) necesarias para cambiar una cadena por otra. La función es útil para comparaciones de cadenas difusas.
Sintaxis:
LevenshteinDist(text1, text2)
Tipo de datos que devuelve: entero
| Ejemplo | Resultado |
|---|---|
| LevenshteinDist('Kitten','Sitting') | Devuelve "3" |
Script de carga
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; Resultado
| ID | Cadenatexto_1 | Cadenatexto_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 |