public class SingleDistinctAggregationToGroupBy
extends Object
implements Rule<AggregationNode>

Implements distinct aggregations with similar inputs by transforming plans of the following shape:

 - Aggregation
        GROUP BY (k)
        F1(DISTINCT s0, s1, ...),
        F2(DISTINCT s0, s1, ...),
     - X

into

 - Aggregation
          GROUP BY (k)
          F1(x)
          F2(x)
      - Aggregation
             GROUP BY (k, s0, s1, ...)
          - X

Assumes s0, s1, ... are symbol references (i.e., complex expressions have been pre-projected)

Nested Class Summary
- Nested classes/interfaces inherited from interface io.prestosql.sql.planner.iterative.Rule
  Rule.Context, Rule.Result

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Rule.Result`	`apply(AggregationNode aggregation, Captures captures, Rule.Context context)`
`Pattern<AggregationNode>`	`getPattern()`	Returns a pattern to which plan nodes this rule applies.

Methods inherited from interface io.prestosql.sql.planner.iterative.Rule
isEnabled

Constructor Detail
- SingleDistinctAggregationToGroupBy
```
public SingleDistinctAggregationToGroupBy()
```

public Rule.Result apply(AggregationNode aggregation,
                         Captures captures,
                         Rule.Context context)

Class SingleDistinctAggregationToGroupBy