Expand description
Transform that allows expressions to arbitrarily vary the magnitude of the multiplicity of each row.
This is most commonly from a Distinct operation, which flattens all positive multiplicities to one.
When a Distinct will certainly be applied, its input expressions are allowed to change the magnitudes
of their record multiplicities, for example removing other Distinct operations that are redundant.
Structsยง
- Will
Distinct - Pushes down the information that a collection will be subjected to a
Distinct.