{
  "node_id": "mysql-72761d60ad7c4a9a9c87435daca246b9",
  "keywords": [
    "exists",
    "not exists",
    "double not exists"
  ],
  "children": [],
  "export": [
    "DoubleNotExists.json"
  ],
  "keywords_must": ["mysql"],
  "keywords_forbid": [],
  "groups": 2
}