xpath_number

Returns a double value, the value zero if no match is found, or NaN if a match is found but the value is non-numeric.

Syntax

Python

from pyspark.sql import functions as sf

sf.xpath_number(xml, path)

Parameters

Parameter	Type	Description
xml	pyspark.sql.Column or str	XML column or column name.
path	pyspark.sql.Column or str	XPath expression.

Examples

Python

import pyspark.sql.functions as sf
spark.createDataFrame(
    [('<a><b>1</b><b>2</b></a>',)], ['x']
).select(sf.xpath_number('x', sf.lit('sum(a/b)'))).show()

Output

+-------------------------+
|xpath_number(x, sum(a/b))|
+-------------------------+
|                      3.0|
+-------------------------+