trait BasicWindowCalc extends Arm
Calculates the results of window operations. It assumes that any batching of the data or fixups after the fact to get the right answer is done outside of this.
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- abstract val boundOrderSpec: Seq[SortOrder]
- abstract val boundPartitionSpec: Seq[GpuExpression]
- abstract val boundWindowOps: Seq[GpuExpression]
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isRunningBatched: Boolean
Is this going to do a batched running window optimization or not.
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def
computeBasicWindow(cb: ColumnarBatch): Array[ColumnVector]
Compute the basic aggregations.
Compute the basic aggregations. In some cases the resulting columns may not be the expected types. This could be caused by cudf type differences and can be fixed by calling
castResultsIfNeededor it could be different because the window operations know about a post processing step that needs to happen prior tocastResultsIfNeeded.- cb
the batch to do window aggregations on.
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the cudf columns that are the results of doing the aggregations.
- def convertToBatch(dataTypes: Array[DataType], cols: Array[ColumnVector]): ColumnarBatch
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