{
  "db_name": "PostgreSQL",
  "query": "SELECT EXISTS(SELECT user_id FROM users WHERE user_id = $1)",
  "describe": {
    "columns": [
      {
        "ordinal": 0,
        "name": "exists",
        "type_info": "Bool"
      }
    ],
    "parameters": {
      "Left": [
        "Int4"
      ]
    },
    "nullable": [
      null
    ]
  },
  "hash": "a04a4e8d3a394883a2f1052074bd43fcadafa0c1ba66f36ac49fc54b5c4150b3"
}