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Filter pushdown? #163

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eitsupi opened this issue Mar 3, 2022 · 0 comments

eitsupi commented Mar 3, 2022 •

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I am wondering if there is a way to filter and read Parquet datasets in Julia.
https://arrow.apache.org/blog/2021/12/03/arrow-duckdb/

For example, it would be great to have a written example of the following query from pyarrow translated into Julia.

import pyarrow.dataset as ds
dataset = ds.dataset(base / "parquet_dataset", format="parquet")
dataset.to_table(filter=ds.field('a') >= 7).to_pandas()

https://arrow.apache.org/docs/python/dataset.html#filtering-data

I am hardly familiar with Julia and apologize if this is not the right place to post this.

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