OffsetWindowFunction Expressions¶

OffsetWindowFunction is an extension of the WindowFunction abstraction for offset-based window functions.

Contract¶

Default Expression¶

default: Expression

Used when:

• FrameLessOffsetWindowFunction is requested to nullable, toString
• OffsetWindowFunctionFrameBase is requested for fillDefaultValue

ignoreNulls¶

ignoreNulls: Boolean

Used when:

• WindowExecBase unary physical operator is requested for windowFrameExpressionFactoryPairs

Input Expression¶

input: Expression

Input Expression

Used when:

• FrameLessOffsetWindowFunction is requested to nullable, dataType, inputTypes, toString
• OffsetWindowFunctionFrameBase is requested for projection, project

Offset Expression¶

offset: Expression

Offset (foldable) Expression

Used when:

• OffsetWindowFunction is requested to fakeFrame
• FrameLessOffsetWindowFunction is requested to checkInputDataTypes, toString

Implementations¶

• FrameLessOffsetWindowFunction
• NthValue