[FLINK-31682] map_from_arrays should take whether allow duplicate keys and null key into consideration

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.18.0
• Fix Version/s: 1.20.0
• Component/s: Table SQL / Planner
• Assignee: Unassigned
• Reporter: Jacky Lau
• Created: 31/Mar/23 08:40
• Updated: 11/Mar/24 12:44

Description

after research the spark/presto/maxcompute about map_from_arrays/map_from_entries, there all support duplicate keys and null key  for the most part

 

spark https://github.com/apache/spark/pull/21258/files

maxcompute https://www.alibabacloud.com/help/en/maxcompute/latest/complex-type-functions#section-7ue-e91-m0s

presto https://prestodb.io/docs/current/functions/map.html