zhengruifeng commented on code in PR #43121:
URL: https://github.com/apache/spark/pull/43121#discussion_r1337896202
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala:
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@@ -2333,7 +2333,7 @@ case class Get(
b
""",
since = "2.4.0",
- group = "map_funcs")
+ group = "collection_funcs")
Review Comment:
I don't think it means `collection_funcs` is forbidden.
`Concat` works with multiple types, including string, binary and array, so
it's not just an array function;
As I mentioned above, it looks like a `collection function` supports
collection type (map/array/struct/etc) and some other types.
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