\underbrace{\biggl[\frac{K-1}{K}, \; 1\biggr)}_\textrm{bucket K}\)
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The second, more thorough option is to stop using CSV altogether and switch to Parquet. Parquet is columnar and schema-aware. There's no delimiter character, so embedded commas, newlines, quotes — all of it just works. Redshift's COPY command supports Parquet natively and actually performs better loading it than CSV.。PDF资料是该领域的重要参考
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