pola-rs / polars

Dataframes powered by a multithreaded, vectorized query engine, written in Rust

https://docs.pola.rs

pola-rs/polars Issues

Panic on DataFrame.pivot when using common aggregate function on string data
Closed a month ago2
Platform Dependent pyo3_runtime.PanicException
Updated a month ago2
Tracking Issue: utilize and track array metadata/statistics
Updated a month ago3
Panic when doing an invalid melt
Closed a month ago2
`.last()` can't be used on LazyGroupBy
Closed a month ago2
Support writing Parquet `distinct_count` statistics for all types
Updated a month ago
Expression/context evaluation bug
Updated a month ago3
`group_by` with `map_elements` result incorrectly gets wrapped in a list for lazyframes
Updated a month ago
Read data with Float32 and Float64 have different outputs
Updated a month ago1
Support reading byte stream split encoded Parquet data
Updated a month ago
hive partitioning predicate isn't applied before reading
Updated a month ago11
Feature Request: add to `df.write_ndjson(json_columns: list[str])`, for columns to be decoded and written out as JSON
Updated a month ago2
Panic when glob scanning with two files with different schemas
Updated a month ago2
`quantile` fails on various numeric edge cases
Updated a month ago
Expose `coalesce` option to asof joins
Closed a month ago
Nested struct column is null after pivoting DataFrame
Updated a month ago
sql conbine CTE and cross join leads to internal error
Updated a month ago
Support NumPy 2.0
Updated a month ago7
[typing] Boolean operators like `Series.__xor__` do not support scalar operands.
Closed a month ago1
Element-wise multiplication & division of `pl.Decimal` silently fail and produce inconsistent results
Updated a month ago1
Index out of bounds panic caused by specific combination of window functions
Closed a month ago2
`join` on a `literal` causes segfault when either frame has 0 rows.
Closed a month ago1
Maybe the version of polars of user guide should be specified.
Updated a month ago2
[Python] please add a `rechunk=False` kwarg in `read_delta()` to align it to `read_parquet()`
Closed a month ago1
Index out of bounds for unequal number of chunks across columns
Closed a month ago3
Jemalloc inclusion condition is wrong: Jemalloc is used when not(allocator = "default")
Updated a month ago
Scan csv.gz tables
Updated a month ago2
Jemalloc is still used when it is turned off with "--cfg allocator=mimalloc"
Closed a month ago1
Cannot sort by multiple columns including Decimal column
Updated a month ago
Cannot import name 'async_sessionmaker' from 'sqlalchemy.ext.asyncio' in 1.0.0a1
Closed a month ago2
Filter doesn't return correct rows
Closed a month ago1
DataFrame constructor fails for Uint64 arrays and lists with large values
Updated a month ago2
Expose query execution metrics
Closed a month ago2
Stream processing support (in the style of flink/risingwave/arroyo/etc.)
Updated a month ago1
Join on multiple keys with Lazy DataFrames panics
Updated a month ago2
Panic when sorting DataFrame by Null column
Updated a month ago1
`pl.scan_ipc(…)` fails when followed by `.head(0)`
Updated a month ago3
Implement coverage mark tests for critical performance paths
Updated a month ago
Create `pl.lit` from a Python `set` object?
Closed a month ago2
Unexpected result when melting categorical columns
Updated a month ago
Cannot drop a column in UDF when using `.pipe`
Closed a month ago1
Regression in when/then/otherwise performance 0.20.15 -> 0.20.16
Closed a month ago1
"Cannot apply operation on arrays of different lengths" panic occurs when add two Series have defferent length
Closed a month ago
Document that `quantile` ignores `nan` values
Updated a month ago
Error checking equality of `List(Struct(Enum)))`
Updated a month ago1
Implement rolling functions for dtypes Int16, Int8, Boolean
Updated a month ago
Odd formatting when a search in the docs contains part of the word "Examples"
Updated a month ago1
`Expr.meta` function that computes the dtype of an expression
Updated a month ago
add support for ROW_NUMBER() RANK() window function in the SQL interface
Updated a month ago
Reading delta table fails due to failing to cast time variable according to PyArrow parquet
Updated a month ago