[
  {
    "Plan": {
      "Node Type": "Index Only Scan",
      "Parallel Aware": false,
      "Scan Direction": "Forward",
      "Index Name": "z_pkey",
      "Relation Name": "z",
      "Alias": "z",
      "Startup Cost": 0.29,
      "Total Cost": 8.31,
      "Plan Rows": 1,
      "Plan Width": 4,
      "Actual Startup Time": 0.008,
      "Actual Total Time": 0.008,
      "Actual Rows": 1,
      "Actual Loops": 1,
      "Index Cond": "(id = 1)",
      "Rows Removed by Index Recheck": 0,
      "Heap Fetches": 1,
      "Shared Hit Blocks": 3,
      "Shared Read Blocks": 0,
      "Shared Dirtied Blocks": 0,
      "Shared Written Blocks": 0,
      "Local Hit Blocks": 0,
      "Local Read Blocks": 0,
      "Local Dirtied Blocks": 0,
      "Local Written Blocks": 0,
      "Temp Read Blocks": 0,
      "Temp Written Blocks": 0
    },
    "Planning Time": 0.025,
    "Triggers": [
    ],
    "Execution Time": 0.014
  }
]