Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/13976#discussion_r69301324 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/GeneratorFunctionSuite.scala --- @@ -89,4 +91,30 @@ class GeneratorFunctionSuite extends QueryTest with SharedSQLContext { exploded.join(exploded, exploded("i") === exploded("i")).agg(count("*")), Row(3) :: Nil) } + + test("inline with empty table or empty array") { --- End diff -- the test name is misleading: we do allow empty array, the problem is `array()` returns an array of null, which fails the type check.
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