Isnull

Controleer of de kolomwaarde null is.

Syntaxis

isNull()

Retouren

Kolom (Booleaanse waarde)

Examples

from pyspark.sql import Row
df = spark.createDataFrame([Row(name='Tom', height=80), Row(name='Alice', height=None)])
df.filter(df.height.isNull()).collect()

# [Row(name='Alice', height=None)]