davidradl commented on code in PR #28970:
URL: https://github.com/apache/flink/pull/28970#discussion_r3784333121
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docs/data/sql_functions.yml:
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@@ -925,6 +925,21 @@ collection:
- sql: MAP_ENTRIES(map)
table: MAP.mapEntries()
description: Returns an array of all entries in the given map. No order
guaranteed.
+ - sql: MAP_CONTAINS_KEY(map, key)
+ table: MAP.mapContainsKey(key)
+ description: |
+ Returns TRUE if the given key exists in the map, FALSE otherwise.
Returns NULL if the map is
+ NULL. A NULL key matches a NULL key in the map. The given key is cast
implicitly to the map's
+ key type where Flink's implicit casting rules allow it; otherwise the
call fails validation.
Review Comment:
when we say fails validation - I assume we should return false as per my
other comment
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