Re:Apache DataFusion
by threeseed on Wednesday January 15, 2025 @11:12PM
(#42721104)
You infer the types of the source data.
For example you can go through say 1% of your data and for each column see if you can coerce all of the values to a float, int, date, string etc. And then from there you can set the Parquet schema with proper types.
For example you can go through say 1% of your data and for each column see if you can coerce all of the values to a float, int, date, string etc. And then from there you can set the Parquet schema with proper types.