{
  "table": "example_table",
  "description": "示例表模型元数据提示词",
  "fields": [
    {
      "name": "id",
      "type": "int",
      "description": "主键"
    },
    {
      "name": "created_at",
      "type": "datetime",
      "description": "创建时间"
    }
  ],
  "relationships": [],
  "notes": [
    "字段含义与业务规则可在此补充"
  ]
}