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Add a Binary columns section

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Note: I didn't mention WKB columns, I'm not sure if there are other binary types in Parquet.
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Sylvain Lesage 2025-08-15 13:14:24 -04:00 committed by GitHub
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@ -218,6 +218,10 @@ await parquetRead({
The `parquetReadObjects` function defaults to `rowFormat: 'object'`.
### Binary columns
Parquet supports binary column types, such as `BYTE_ARRAY` and `UTF8`. As many parquet files in the wild encode strings as `BYTE_ARRAY` instead of `UTF8`, by default, the `BYTE_ARRAY` values are decoded as UTF-8 strings. This behavior can be changed by setting the `utf8` option to `false` in functions such as `parquetRead`. Note that this option does not affect `UTF8` columns, which are always decoded as UTF-8 strings.
## Supported Parquet Files
The parquet format is known to be a sprawling format which includes options for a wide array of compression schemes, encoding types, and data structures.