{
  "summary": [
    {
      "name": "demo_session_state",
      "title": "demo_session_state",
      "primary": [
        "id"
      ]
    }
  ],
  "fields": [
    {
      "name": "id",
      "title": "主键",
      "type": "str",
      "length": 255,
      "nullable": "no"
    },
    {
      "name": "session_id",
      "title": "演示会话ID",
      "type": "str",
      "length": 255
    },
    {
      "name": "entity_id",
      "title": "实体ID",
      "type": "str",
      "length": 255
    },
    {
      "name": "entity_name",
      "title": "实体名称",
      "type": "str",
      "length": 255
    },
    {
      "name": "base_json",
      "title": "演示开始时的基线状态(快照,只读)",
      "type": "text"
    },
    {
      "name": "demo_json",
      "title": "演示中的当前状态(可实时修改)",
      "type": "text"
    },
    {
      "name": "updated_at",
      "title": "更新时间",
      "type": "datetime"
    }
  ],
  "indexes": [
    {
      "name": "idx_state_session",
      "idxtype": "index",
      "idxfields": [
        "session_id"
      ]
    },
    {
      "name": "idx_state_entity",
      "idxtype": "index",
      "idxfields": [
        "entity_id"
      ]
    }
  ],
  "codes": []
}