[ 
https://issues.apache.org/jira/browse/SPARK-41851?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Sandeep Singh updated SPARK-41851:
----------------------------------
    Description: 
{code:java}
File 
"/Users/s.singh/personal/spark-oss/python/pyspark/sql/connect/functions.py", 
line 313, in pyspark.sql.connect.functions.nanvl
Failed example:
    df.select(nanvl("a", "b").alias("r1"), nanvl(df.a, 
df.b).alias("r2")).collect()
Expected:
    [Row(r1=1.0, r2=1.0), Row(r1=2.0, r2=2.0)]
Got:
    [Row(r1=1.0, r2=1.0), Row(r1=nan, r2=nan)]{code}

  was:
{code:java}
File 
"/Users/s.singh/personal/spark-oss/python/pyspark/sql/connect/functions.py", 
line 801, in pyspark.sql.connect.functions.count
Failed example:
    df.select(count(expr("*")), count(df.alphabets)).show()
Expected:
    +--------+----------------+
    |count(1)|count(alphabets)|
    +--------+----------------+
    |       4|               3|
    +--------+----------------+
Got:
    +----------------+----------------+
    |count(alphabets)|count(alphabets)|
    +----------------+----------------+
    |               3|               3|
    +----------------+----------------+
    <BLANKLINE> {code}


> Fix `nanvl` function
> --------------------
>
>                 Key: SPARK-41851
>                 URL: https://issues.apache.org/jira/browse/SPARK-41851
>             Project: Spark
>          Issue Type: Sub-task
>          Components: Connect, PySpark
>    Affects Versions: 3.4.0
>            Reporter: Sandeep Singh
>            Priority: Major
>             Fix For: 3.4.0
>
>
> {code:java}
> File 
> "/Users/s.singh/personal/spark-oss/python/pyspark/sql/connect/functions.py", 
> line 313, in pyspark.sql.connect.functions.nanvl
> Failed example:
>     df.select(nanvl("a", "b").alias("r1"), nanvl(df.a, 
> df.b).alias("r2")).collect()
> Expected:
>     [Row(r1=1.0, r2=1.0), Row(r1=2.0, r2=2.0)]
> Got:
>     [Row(r1=1.0, r2=1.0), Row(r1=nan, r2=nan)]{code}



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