QUERY PLAN                 
-------------------------------------------
 [                                        +
   {                                      +
     "Plan": {                            +
       "Node Type": "Aggregate",          +
       "Strategy": "Hashed",              +
       "Partial Mode": "Simple",          +
       "Parallel Aware": false,           +
       "Startup Cost": 18.82,             +
       "Total Cost": 18.86,               +
       "Plan Rows": 4,                    +
       "Plan Width": 9,                   +
       "Group Key": ["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": 1                +
         }                                +
       ]                                  +
     }                                    +
   }                                      +
 ]
(1 row)