zeroifnull

Returns zero if col is null, or col otherwise.

For the corresponding Databricks SQL function, see zeroifnull function.

Syntax

from pyspark.sql import functions as dbf

dbf.zeroifnull(col=<col>)

Parameters

Parameter	Type	Description
col	pyspark.sql.Column or str	The column to check.

Examples

from pyspark.sql import functions as dbf
df = spark.createDataFrame([(None,), (1,)], ["a"])
df.select('*', dbf.zeroifnull(df.a)).show()

+----+-------------+
|   a|zeroifnull(a)|
+----+-------------+
|NULL|            0|
|   1|            1|
+----+-------------+