Maxim Gekk created SPARK-25252:
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Summary: Support arrays of any types in to_json
Key: SPARK-25252
URL: https://issues.apache.org/jira/browse/SPARK-25252
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.3.1
Reporter: Maxim Gekk
Need to improve the to_json function and make it more consistent with from_json
by supporting arrays of any types (as root types). For now, it supports only
arrays of structs and arrays of maps. After the changes the following code
should work:
{code:scala}
select to_json(array('1','2','3'))
> ["1","2","3"]
select to_json(array(array(1,2,3),array(4)))
> [[1,2,3],[4]]
{code}
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