Zhenzhong Xu created FLINK-33765:
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Summary: Flink SQL to support COLLECTLIST
Key: FLINK-33765
URL: https://issues.apache.org/jira/browse/FLINK-33765
Project: Flink
Issue Type: Improvement
Components: API / DataSet
Reporter: Zhenzhong Xu
Flink SQL currently supports COLLECT, which returns a multiset, however, given
support for casting from multiset to other types (especially array/list) is
*very* limited, see
[here,|https://github.com/apache/flink/blob/master/docs/content/docs/dev/table/types.md#casting]
this is creating lots of headaches for ease of use.
Can we support COLLECT_LIST as a built-in system function?
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