RelBuilder.GroupKey (Apache Calcite API)

All Known Implementing Classes:

RelBuilder.GroupKeyImpl

Enclosing class:

RelBuilder
```
public static interface RelBuilder.GroupKey
```
Information necessary to create the GROUP BY clause of an Aggregate.

See Also:

RelBuilder.groupKey()

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  RelBuilder.GroupKey alias(java.lang.String alias)
  Assigns an alias to this group key.

- Method Detail
  - alias
```
RelBuilder.GroupKey alias(java.lang.String alias)
```
    Assigns an alias to this group key.
    Used to assign field names in the group operation.