smallpond/logical/dataset.py [467:477]:
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            recursive=any(dataset.recursive for dataset in datasets),
            columns=datasets[0].columns,
            union_by_name=any(dataset.union_by_name for dataset in datasets),
        )

    def sql_query_fragment(
        self,
        filesystem: fsspec.AbstractFileSystem = None,
        conn: duckdb.DuckDBPyConnection = None,
    ) -> str:
        schema_str = ", ".join(map(lambda x: f"'{x[0]}': '{x[1]}'", self.schema.items()))
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smallpond/logical/dataset.py [521:531]:
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            recursive=any(dataset.recursive for dataset in datasets),
            columns=datasets[0].columns,
            union_by_name=any(dataset.union_by_name for dataset in datasets),
        )

    def sql_query_fragment(
        self,
        filesystem: fsspec.AbstractFileSystem = None,
        conn: duckdb.DuckDBPyConnection = None,
    ) -> str:
        schema_str = ", ".join(map(lambda x: f"'{x[0]}': '{x[1]}'", self.schema.items()))
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