Module mz_transform::reduce_elision

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Expand description

Removes Reduce when the input has as unique keys the keys of the reduce.

When a reduce has grouping keys that are contained within a set of columns that form unique keys for the input, the reduce can be simplified to a map operation.

Structs§

  • ReduceElision
    Removes Reduce when the input has as unique keys the keys of the reduce.