Module dataframe 

Root-owned DataFrame API; delegates to robin-sparkless-polars for execution.

Structs

CubeRollupData

Root-owned CubeRollupData; delegates to the Polars backend.

DataFrame

Root-owned DataFrame; delegates to the Polars backend.

DataFrameNa

Root-owned DataFrameNa; delegates to the Polars backend.

DataFrameStat

Root-owned DataFrameStat; delegates to the Polars backend.

DataFrameWriter

Root-owned DataFrameWriter; delegates to the Polars backend.

GroupedData

Root-owned GroupedData; delegates to the Polars backend.

PivotedGroupedData

Root-owned PivotedGroupedData; delegates to the Polars backend.

Enums

JoinType

Re-export for API compatibility. Join type for DataFrame joins (PySpark-compatible)

SaveMode

Re-export for API compatibility. Save mode for saveAsTable (PySpark default is ErrorIfExists).

SelectItem

Re-export for API compatibility. Select item: either a column name (str) or an expression (PySpark parity: select(“a”, col(“b”).alias(“x”))). Fixes #645: select expects Column or str.

WriteFormat

Re-export for API compatibility. Output format for generic write (PySpark DataFrameWriter.format).

WriteMode

Re-export for API compatibility. Write mode: overwrite or append (PySpark DataFrameWriter.mode for path-based save).