- Plan: 
    Node Type: "Aggregate"
    Strategy: "Mixed"
    Partial Mode: "Simple"
    Parallel Aware: false
    Startup Cost: 0.00
    Total Cost: 0.04
    Plan Rows: 2
    Plan Width: 12
    Grouping Sets: 
      - Hash Keys: 
          - ["1"]
      - Group Keys: 
          - []
    Plans: 
      - Node Type: "Result"
        Parent Relationship: "Outer"
        Parallel Aware: false
        Startup Cost: 0.00
        Total Cost: 0.01
        Plan Rows: 1
        Plan Width: 4