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https://issues.apache.org/jira/browse/SPARK-21160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16057614#comment-16057614
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Edoardo Vivo commented on SPARK-21160:
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Sorry for the stupid question, but may I ask WHY this is the expected behavior?
1 is different from null...
BTW, this is not pandas behavior, for instance. I really don't understand.
Thank you.
> Filtering rows with "not equal" operator yields unexpected result with null
> rows
> --------------------------------------------------------------------------------
>
> Key: SPARK-21160
> URL: https://issues.apache.org/jira/browse/SPARK-21160
> Project: Spark
> Issue Type: Bug
> Components: PySpark, Spark Core, SQL
> Affects Versions: 2.0.2
> Reporter: Edoardo Vivo
> Priority: Minor
>
> ```
> schema = StructType([StructField("Test", DoubleType())])
> test2 = spark.createDataFrame([[1.0],[1.0],[2.0],[2.0],[None]], schema=schema)
> test2.where("Test != 1").show()
> ```
> This returns only the rows with the value 2, it does not return the null row.
> This should not be the expected behavior, IMO.
> Thank you.
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