Package index • nanoparquet

Parquet schemas and type mappings

How nanoparquet maps R data types to Parquet data types and vice versa.

infer_parquet_schema(): Infer Parquet schema of a data frame

nanoparquet-types: nanoparquet's type maps

parquet-encodings: Parquet encodings

parquet_schema(): Create a Parquet schema

Read Parquet files

read_parquet(): Read a Parquet file into a data frame

Write Parquet files

append_parquet(): Append a data frame to an existing Parquet file

write_parquet(): Write a data frame to a Parquet file

Extract Parquet metadata

read_parquet_info() parquet_info(): Short summary of a Parquet file

read_parquet_metadata() parquet_metadata(): Read the metadata of a Parquet file

read_parquet_schema(): Read the schema of a Parquet file

Nanoparquet options

parquet_options(): Nanoparquet options

Debugging Parquet files

These functions are useful for debugging possibly broken Parquet files and for nanoparquet developers.

read_parquet_pages(): Metadata of all pages of a Parquet file

read_parquet_page(): Read a page from a Parquet file