{
  "db_name": "PostgreSQL",
  "query": "UPDATE topology_runs\n         SET status = 'running', started_at = COALESCE(started_at, now()), updated_at = now()\n         WHERE id = (\n             SELECT id FROM topology_runs\n             WHERE status = 'queued'\n             ORDER BY created_at\n             FOR UPDATE SKIP LOCKED\n             LIMIT 1\n         )\n         RETURNING id, workspace_id, task, graph, checkpoint, last_event_id, tier",
  "describe": {
    "columns": [
      {
        "ordinal": 0,
        "name": "id",
        "type_info": "Uuid"
      },
      {
        "ordinal": 1,
        "name": "workspace_id",
        "type_info": "Uuid"
      },
      {
        "ordinal": 2,
        "name": "task",
        "type_info": "Text"
      },
      {
        "ordinal": 3,
        "name": "graph",
        "type_info": "Jsonb"
      },
      {
        "ordinal": 4,
        "name": "checkpoint",
        "type_info": "Jsonb"
      },
      {
        "ordinal": 5,
        "name": "last_event_id",
        "type_info": "Int8"
      },
      {
        "ordinal": 6,
        "name": "tier",
        "type_info": "Text"
      }
    ],
    "parameters": {
      "Left": []
    },
    "nullable": [
      false,
      false,
      false,
      true,
      true,
      false,
      false
    ]
  },
  "hash": "9eae6ca16ffc9346456128ce676ef04f3478f873d6ac5f95154b797f454f44c0"
}