Github user dilipbiswal commented on the pull request:
https://github.com/apache/spark/pull/8983#issuecomment-145711558
Hi Wenchen,
Here is the link i could find where its a bit confusing on the equality
operator.
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF#LanguageManualUDF-RelationalOperators
In order to test it out , i tried the queries on hive like following ..
hive> select * from tnull ;
OK
1
2
NULL
hive> select null = 1 from tnull ;
OK
NULL
NULL
NULL
Time taken: 0.118 seconds, Fetched: 3 row(s)
hive> select null in (1,2) from tnull ;
OK
NULL
NULL
NULL
Please let me know what you think and thanks again for your help.
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