duongcongtoai commented on issue #10264:
URL: https://github.com/apache/datafusion/issues/10264#issuecomment-2101978726

   List of problems (TBD)
   - ExprSchemable get_type() returns a single type, while the expression 
unnest(some_struct) returns a value table (multiple types) 
https://github.com/apache/datafusion/blob/8b4a8e6b157c007e7988f715cb4b693578438f8b/datafusion/expr/src/expr_schema.rs#L124


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