Package org.apache.calcite.profile

Utilities to analyze data sets.

Interface Summary

Interface	Description
Profiler	Analyzes data sets.
Profiler.Statistic	Statistic produced by the profiler.

Class Summary

Class	Description
Profiler.Column	Column.
Profiler.Distribution	Value distribution, including cardinality and optionally values, of a column or set of columns.
Profiler.FunctionalDependency	Functional dependency.
Profiler.Profile	The result of profiling, contains various statistics about the data in a table.
Profiler.RowCount	Whole data set.
Profiler.Unique	Unique key.
ProfilerImpl	Implementation of Profiler that only investigates "interesting" combinations of columns.
ProfilerImpl.Builder	Builds a ProfilerImpl.
ProfilerImpl.Collector	Collects values of a column or columns.
ProfilerImpl.CompositeCollector	Collector that collects two or more column values in a tree set.
ProfilerImpl.HllCollector	Collector that collects two or more column values into a HyperLogLog sketch.
ProfilerImpl.HllCompositeCollector	Collector that collects two or more column values into a HyperLogLog sketch.
ProfilerImpl.HllSingletonCollector	Collector that collects one column value into a HyperLogLog sketch.
ProfilerImpl.SingletonCollector	Collector that collects values of a single column.
ProfilerImpl.Space	Work space for a particular combination of columns.
ProfilerImpl.SurpriseQueue	A priority queue of the last N surprise values.
SimpleProfiler	Basic implementation of Profiler.
SimpleProfiler.Run	A run of the profiler.
SimpleProfiler.Space	Work space for a particular combination of columns.