levenshtein

Computes the Levenshtein distance of the two given strings.

For the corresponding Databricks SQL function, see levenshtein function.

Syntax

from pyspark.sql import functions as dbf

dbf.levenshtein(left=<left>, right=<right>, threshold=<threshold>)

Parameters

Parameter	Type	Description
left	pyspark.sql.Column or str	First column value.
right	pyspark.sql.Column or str	Second column value.
threshold	int, optional	If set when the levenshtein distance of the two given strings less than or equal to a given threshold then return result distance, or -1

Returns

pyspark.sql.Column: Levenshtein distance as integer value.

Examples

from pyspark.sql import functions as dbf
df = spark.createDataFrame([('kitten', 'sitting',)], ['l', 'r'])
df.select('*', dbf.levenshtein('l', 'r')).show()

df.select('*', dbf.levenshtein(df.l, df.r, 2)).show()