- Plan: 
    Node Type: "Aggregate"
    Strategy: "Hashed"
    Partial Mode: "Simple"
    Parallel Aware: false
    Startup Cost: 19.79
    Total Cost: 19.95
    Plan Rows: 16
    Plan Width: 13
    Group Key: 
      - "relnamespace"
      - "relkind"
    Plans: 
      - Node Type: "Seq Scan"
        Parent Relationship: "Outer"
        Parallel Aware: false
        Relation Name: "pg_class"
        Alias: "pg_class"
        Startup Cost: 0.00
        Total Cost: 16.88
        Plan Rows: 388
        Plan Width: 5