{
  "db_name": "PostgreSQL",
  "query": "SELECT EXISTS(SELECT 1 FROM users WHERE username = $1 ) as exists",
  "describe": {
    "columns": [
      {
        "ordinal": 0,
        "name": "exists",
        "type_info": "Bool"
      }
    ],
    "parameters": {
      "Left": [
        "Text"
      ]
    },
    "nullable": [
      null
    ]
  },
  "hash": "08c4a5721982ecd267ebc515b866c61aaef9395170430a58dcd7ac78f8cc75b2"
}