Re: [PR] Support `map_keys` for MAP type [datafusion]

["dharanad (via GitHub)" <gi...@apache.org>]

dharanad commented on PR #12194:
URL: https://github.com/apache/datafusion/pull/12194#issuecomment-2312142967

   Encounter a bug. Fixed it by changing field name to `item`. But why ?
   ```
   Internal error: Failed due to a difference in schemas, original schema: DFSchema { inner: Schema { fields: [Field { name: "map_keys(map(make_array(Int64(1),Int64(2),Int64(3)),make_array(Int64(1),Int64(2),Int64(3))))", data_type: List(Field { name: "keys", data_type: Int64, nullable: false, dict_id: 0, dict_is_ordered: false, metadata: {} }), nullable: true, dict_id: 0, dict_is_ordered: false, metadata: {} }], metadata: {} }, field_qualifiers: [None], functional_dependencies: FunctionalDependencies { deps: [] } }, new schema: DFSchema { inner: Schema { fields: [Field { name: "map_keys(map(make_array(Int64(1),Int64(2),Int64(3)),make_array(Int64(1),Int64(2),Int64(3))))", data_type: List(Field { name: "item", data_type: Int64, nullable: false, dict_id: 0, dict_is_ordered: false, metadata: {} }), nullable: false, dict_id: 0, dict_is_ordered: false, metadata: {} }], metadata: {} }, field_qualifiers: [None], functional_dependencies: FunctionalDependencies { deps: [] } }.
   ```


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