The amount of time (in ms) spent evaluating the filter or applying an index for this query plan step.

The calculated cost of applying the filter as defined by IIndexAwareFilter.CalculateEffectiveness(IDictionary, ICollection).

A description of the filter that was associated with this step during its creation.

The recorded information about the index lookups performed during filter evaluation as part of an IQueryRecord.

The size of the key set remaining after evaluating the filter or applying an index. This value can be used together with PreFilterKeySetSize to calculate an actual effectiveness (reduction of the key set) for this filter step.

The size of the key set prior to evaluating the filter or applying an index. This value can be used together with PostFilterKeySetSize to calculate an actual effectiveness (reduction of the key set) for this filter step.

The inner nested steps, may be null if not nested.