[DRILL-22] Aggregation of entire stream should be possible by specifying empty list of keys

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.4.0
• Assignee: Jacques Nadeau
• Reporter: Ted Dunning
• Created: 28/Jan/13 03:57
• Updated: 31/Jul/14 06:32
• Resolved: 15/May/14 17:56

Description

The aggregate operator should support an empty list of keys to allow aggregation across the entire input something like this:

      { op: "aggregate", type: "simple", keys: [], 
        aggregations: [ref: "average", expr: "AVG(y)"]}