leanken commented on pull request #29304:
URL: https://github.com/apache/spark/pull/29304#issuecomment-667788398
I just found out a negative case for it
it should return (1,2,3) in expansion solution, but it return nothing in
BNLJ.
you are right about the correctness, let me rethink and come back to you
later.
```
spark.sql(
"""
|CREATE TEMPORARY VIEW m AS SELECT * FROM VALUES
| (1, 2, 3)
| AS m(a, b, c)
""".stripMargin).collect()
spark.sql(
"""
|CREATE TEMPORARY VIEW s AS SELECT * FROM VALUES
| (1, null, 3)
| AS s(c, d, e)
""".stripMargin).collect()
spark.sql(
"""
|select * from m where (a,b,c) not in (select * from s)
""".stripMargin).collect().foreach(println)
```
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