Export data to IPC file(s)

Usage

write_ipc_polars(
  .data,
  file,
  compression = "uncompressed",
  ...,
  compat_level = "newest"
)

Arguments

.data

A Polars DataFrame.

file

File path to which the result should be written.

compression

NULL or a character of the compression method, "uncompressed" or "lz4" or "zstd". NULL is equivalent to "uncompressed". Choose "zstd" for good compression performance. Choose "lz4" for fast compression/decompression.

...

Ignored.

compat_level

Determines the compatibility level when exporting Polars' internal data structures. When specifying a new compatibility level, Polars exports its internal data structures that might not be interpretable by other Arrow implementations. The level can be specified as the name (e.g., "newest") or as a scalar integer (currently, 0 or 1 is supported).

"newest" (default): Use the highest level, currently same as 1 (Low compatibility).
"oldest": Same as 0 (High compatibility).

Value

The input DataFrame.

Details

Partitioned output

It is possible to export data to multiple files based on various parameters, such as the values of some variables, or such that each file has a maximum number of rows. See partition_by() for more details.