QUERY PLAN                   
-----------------------------------------------
 [                                            +
   {                                          +
     "Plan": {                                +
       "Node Type": "Aggregate",              +
       "Strategy": "Sorted",                  +
       "Partial Mode": "Simple",              +
       "Parallel Aware": false,               +
       "Startup Cost": 33.56,                 +
       "Total Cost": 40.39,                   +
       "Plan Rows": 4,                        +
       "Plan Width": 9,                       +
       "Group Key": ["pg_class.relkind"],     +
       "Plans": [                             +
         {                                    +
           "Node Type": "Sort",               +
           "Parent Relationship": "Outer",    +
           "Parallel Aware": false,           +
           "Startup Cost": 33.56,             +
           "Total Cost": 34.53,               +
           "Plan Rows": 388,                  +
           "Plan Width": 1,                   +
           "Sort Key": ["pg_class.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)