friendlymatthew commented on issue #18913:
URL: https://github.com/apache/datafusion/issues/18913#issuecomment-3572267108
> The reason for the error is that DataFusion's current implementation of
the MAP() function expects both arguments to be list types (list, large_list,
or fixed_size_list) rather than scalar strings (Utf8). Thus, a type mismatch
causes the syntax MAP('type', 'test') to fail.
Hi, you're right about the current behavior - `map()` currently requires
list types rather than accepting scalar values directly. However, this **is**
the issue I'm working to fix
While the workaround you mentioned works with the current impl, the goal
here is to make that workaround unnecessary by fixing the underlying limitation
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