db = DuckDBClient.of([FileAttachment('Commodity.parquet'), FileAttachment('CommodityXX.parquet'), FileAttachment('Flow.parquet'),
FileAttachment('ImportCommodityXX.parquet'), FileAttachment('ImportContributionsXX.parquet'), FileAttachment('ImportMultiplierXX.parquet'),
FileAttachment('ImportSectorXX.parquet'), FileAttachment('SectorXX.parquet')
])