Robin Moffatt • 3/3/2023

Aligning mismatched Parquet schemas in DuckDB

This technical article explains a common data engineering problem: querying multiple Parquet files with inconsistent schemas in DuckDB. It details the error encountered when column types differ across yearly files and provides the solution using DuckDB's `union_by_name` parameter to successfully align and query the data.

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#S3 #Data Engineering #Duckdb