Package index • qio

Read and write

read_parquet(): Read a Parquet file
write_parquet(): Write a Parquet file
parquet_schema(): Create a Parquet writer schema
infer_parquet_schema(): Infer the Parquet writer schema for an R object
parquet_type_mapping(): Show Parquet physical type mappings
qio-types: Parquet type mapping

Lazy reading

open_parquet(): Open a Parquet file
close_parquet(): Close a Parquet file
collect(): Collect data from a Parquet file
walk_batches(): Walk over batches from a Parquet file

Inspect files

schema(): Inspect a Parquet schema
row_groups(): Inspect Parquet row groups
column_chunks(): Inspect Parquet column chunks
column_statistics(): Inspect Parquet column statistics
page_index(): Inspect Parquet page indexes
bloom_filter_may_contain(): Test values against a Parquet bloom filter
metadata(): Inspect Parquet footer metadata
read_plan(): Plan how a Parquet file is read into R
validate_parquet(): Check that a file is structurally valid Parquet

Package

qio qio-package: qio: Read and Write 'Apache Parquet' Files
qio-limitations: What qio does not do