Function reference • nanoparquet

Type mappings

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

nanoparquet-types: nanoparquet's type maps

parquet_column_types(): Map between R and Parquet data types

Read Parquet files

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

Write Parquet files

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

Extract Parquet metadata

parquet_info(): Short summary of a Parquet file

parquet_metadata(): Read the metadata of a Parquet file

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.

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

read_parquet_page(): Read a page from a Parquet file