Gengliang Wang created SPARK-29462:
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Summary: The data type of "array()" should be array<null>
Key: SPARK-29462
URL: https://issues.apache.org/jira/browse/SPARK-29462
Project: Spark
Issue Type: Task
Components: SQL
Affects Versions: 3.0.0
Reporter: Gengliang Wang
In the current implmentation:
> spark.sql("select array()")
res0: org.apache.spark.sql.DataFrame = [array(): array<string>]
The output type should be array<null>
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