Partition by multiple columns by either passing a list of column names, or by specifying each column name as a positional argument.

5 мая 2024 г. · I have a big Polars dataframe with a lot of groups. Now, I want to partition the dataframe by group and save all sub-dataframes. Polars - efficiently partition large dataset - Stack Overflow Writing DataFrames as partitioned parquet object in Polars with ... Другие результаты с сайта stackoverflow.com

Polars supports scanning hive partitioned parquet and IPC datasets, with planned support for other formats in the future.

10 февр. 2024 г. · Polars and Delta Lake (Delta-RS) works great together. There are many ways to read partitioned delta tables with the Polars dataframe library.

20 февр. 2024 г. · I want to do this lazy with streaming, but I as of now there is no way to use partition_by on a LazyFrame. Is there a way to make this happen?

22 февр. 2024 г. · This library is not a replacement for Polars. The main goal is to improve the work (write/read/filter) with partitions by creating a Table Of ...

2 янв. 2024 г. · Passing a list of a single column to partition by should return keys as one element tuple, similarly to what iterating on a groupby does.

Compute expressions over the given groups. This expression is similar to performing a group by aggregation and joining the result back into the original ...

27 сент. 2023 г. · Apache Arrow can read Polars DataFrames and partition them, as well as read partitions from S3 folders and convert the type to Polars DataFrame in a highly ...

Object which can be used to perform aggregations. Examples. Group by one column and call agg to compute the grouped sum of another column.