xpath

Devuelve una matriz de cadenas de valores dentro de los nodos de xml que coinciden con la expresión XPath.

Syntax

from pyspark.sql import functions as sf

sf.xpath(xml, path)

Parámetros

Parámetro	Tipo	Description
xml	pyspark.sql.Column o str	Nombre de columna o columna XML.
path	pyspark.sql.Column o str	Expresión XPath.

Examples

from pyspark.sql import functions as sf
df = spark.createDataFrame(
    [('<a><b>b1</b><b>b2</b><b>b3</b><c>c1</c><c>c2</c></a>',)], ['x'])
df.select(sf.xpath(df.x, sf.lit('a/b/text()'))).show()

+--------------------+
|xpath(x, a/b/text())|
+--------------------+
|        [b1, b2, b3]|
+--------------------+