pyspark.sql.Window¶

class pyspark.sql.Window¶

Utility functions for defining window in DataFrames.

Notes

When ordering is not defined, an unbounded window frame (rowFrame, unboundedPreceding, unboundedFollowing) is used by default. When ordering is defined, a growing window frame (rangeFrame, unboundedPreceding, currentRow) is used by default.

Examples

>>> # ORDER BY date ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW
>>> window = Window.orderBy("date").rowsBetween(Window.unboundedPreceding, Window.currentRow)

>>> # PARTITION BY country ORDER BY date RANGE BETWEEN 3 PRECEDING AND 3 FOLLOWING
>>> window = Window.orderBy("date").partitionBy("country").rangeBetween(-3, 3)

Methods

`orderBy`(*cols)	Creates a `WindowSpec` with the ordering defined.
`partitionBy`(*cols)	Creates a `WindowSpec` with the partitioning defined.
`rangeBetween`(start, end)	Creates a `WindowSpec` with the frame boundaries defined, from start (inclusive) to end (inclusive).
`rowsBetween`(start, end)	Creates a `WindowSpec` with the frame boundaries defined, from start (inclusive) to end (inclusive).

Attributes

`currentRow`
`unboundedFollowing`
`unboundedPreceding`

pyspark.sql.DataFrameStatFunctions

pyspark.sql.DataFrameReader