hanyuzheng7 commented on code in PR #22842:
URL: https://github.com/apache/flink/pull/22842#discussion_r1242839050
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docs/data/sql_functions.yml:
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@@ -649,6 +649,9 @@ collection:
- sql: MAP_KEYS(map)
table: MAP.mapKeys()
description: Returns the keys of the map as array. No order guaranteed.
+ SQL: MAP_UNION(map1, map2)
+ Table: map1.mapUnion(map2)
+ Description: Returns a map created by merging two maps, 'map1' and 'map2'.
This two maps should have same data structure. If there are overlapping keys,
the value from 'map2' will overwrite the value from 'map1'. If any of maps are
null, return null.
Review Comment:
I will fix it. Thank you.
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