snuyanzin commented on code in PR #15797:
URL: https://github.com/apache/flink/pull/15797#discussion_r1118547626
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flink-python/pyflink/table/expression.py:
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@@ -1487,6 +1487,24 @@ def array_distinct(self) -> 'Expression':
"""
return _binary_op("arrayDistinct")(self)
+ @property
+ def map_keys(self) -> 'Expression':
+ """
+ Returns the keys of the map as array.
+
Review Comment:
you never know if it is unordered or ordered.
That's why I woudn't say unordered to avoid cases that sometimes by accident
it could be ordered (e.g. map of size 1) meaning violating this comment
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