pyspark.sql.functions.xpath_double

pyspark.sql.functions.xpath_double(xml, path)

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.

New in version 3.5.0.

Examples

>>> from pyspark.sql import functions as sf
>>> df = spark.createDataFrame([('<a><b>1</b><b>2</b></a>',)], ['x'])
>>> df.select(sf.xpath_double(df.x, sf.lit('sum(a/b)'))).show()
+-------------------------+
|xpath_double(x, sum(a/b))|
+-------------------------+
|                      3.0|
+-------------------------+