Parquet is a columnar storage file format. This function enables you to write Parquet files from R.

  chunk_size = NULL,
  version = NULL,
  compression = NULL,
  compression_level = NULL,
  use_dictionary = NULL,
  write_statistics = NULL,
  data_page_size = NULL,
  properties = ParquetWriterProperties$create(x, version = version, compression =
    compression, compression_level = compression_level, use_dictionary = use_dictionary,
    write_statistics = write_statistics, data_page_size = data_page_size),
  use_deprecated_int96_timestamps = FALSE,
  coerce_timestamps = NULL,
  allow_truncated_timestamps = FALSE,

    arrow_properties = ParquetArrowWriterProperties$create(use_deprecated_int96_timestamps
    = use_deprecated_int96_timestamps, coerce_timestamps = coerce_timestamps,
    allow_truncated_timestamps = allow_truncated_timestamps)



An arrow::Table, or an object convertible to it.


an arrow::io::OutputStream or a string which is interpreted as a file path


chunk size in number of rows. If NULL, the total number of rows is used.


parquet version, "1.0" or "2.0". Default "1.0"


compression algorithm. Default "snappy". See details.


compression level. Meaning depends on compression algorithm


Specify if we should use dictionary encoding. Default TRUE


Specify if we should write statistics. Default TRUE


Set a target threshold for the approximate encoded size of data pages within a column chunk (in bytes). Default 1 MiB.


properties for parquet writer, derived from arguments version, compression, compression_level, use_dictionary, write_statistics and data_page_size. You should not specify any of these arguments if you also provide a properties argument, as they will be ignored.


Write timestamps to INT96 Parquet format. Default FALSE.


Cast timestamps a particular resolution. Can be NULL, "ms" or "us". Default NULL (no casting)


Allow loss of data when coercing timestamps to a particular resolution. E.g. if microsecond or nanosecond data is lost when coercing to "ms", do not raise an exception


arrow specific writer properties, derived from arguments use_deprecated_int96_timestamps, coerce_timestamps and allow_truncated_timestamps You should not specify any of these arguments if you also provide a properties argument, as they will be ignored.


the input x invisibly.


The parameters compression, compression_level, use_dictionary and write_statistics support various patterns:

  • The default NULL leaves the parameter unspecified, and the C++ library uses an appropriate default for each column (defaults listed above)

  • A single, unnamed, value (e.g. a single string for compression) applies to all columns

  • An unnamed vector, of the same size as the number of columns, to specify a value for each column, in positional order

  • A named vector, to specify the value for the named columns, the default value for the setting is used when not supplied

The compression argument can be any of the following (case insensitive): "uncompressed", "snappy", "gzip", "brotli", "zstd", "lz4", "lzo" or "bz2". Only "uncompressed" is guaranteed to be available, but "snappy" and "gzip" are almost always included. See codec_is_available(). The default "snappy" is used if available, otherwise "uncompressed". To disable compression, set compression = "uncompressed". Note that "uncompressed" columns may still have dictionary encoding.


# \donttest{ tf1 <- tempfile(fileext = ".parquet") write_parquet(data.frame(x = 1:5), tf1) # using compression if (codec_is_available("gzip")) { tf2 <- tempfile(fileext = ".gz.parquet") write_parquet(data.frame(x = 1:5), tf2, compression = "gzip", compression_level = 5) } # }