Google cloud datastore 如何查询Google云数据库中的数组

我已经编写了查询，以获取事件数据实体的所有列表。谷歌数据存储的结果是这样的

[{
  "key": {
    "id": 5678669024460800,
    "kind": "Event",
    "path": [
      "Event",
      5678669024460800
    ]
  },
  "data": {
    "createdAt": "2017-03-27T06:28:58.000Z",
    "users":["test1@xxx.com","test2@xxx.com","test3@xxx.com"]
  }
},
{
  "key": {
    "id": 5678669024460800,
    "kind": "Event",
    "path": [
      "Event",
      5678669024460800
    ]
  },
  "data": {
    "createdAt": "2017-03-27T06:28:58.000Z",
    "users":["test1@xxx.com"]
  }
},
{
  "key": {
    "id": 5678669024460800,
    "kind": "Event",
    "path": [
      "Event",
      5678669024460800
    ]
  },
  "data": {
    "createdAt": "2017-03-27T06:28:58.000Z",
    "users":["test2@xxx.com","test3@xxx.com"]
  }
}]

但我需要编写一个查询，以按电子邮件id进行筛选。这意味着我需要获取与电子邮件id匹配的实体。例如，如果我将电子邮件id作为传递，则为“test1@xxx.com“我应该得到这样的最终结果。有人能帮我吗

[{
  "key": {
    "id": 5678669024460800,
    "kind": "Event",
    "path": [
      "Event",
      5678669024460800
    ]
  },
  "data": {
    "createdAt": "2017-03-27T06:28:58.000Z",
    "users":["test1@xxx.com","test2@xxx.com","test3@xxx.com"]
  }
},
{
  "key": {
    "id": 5678669024460800,
    "kind": "Event",
    "path": [
      "Event",
      5678669024460800
    ]
  },
  "data": {
    "createdAt": "2017-03-27T06:28:58.000Z",
    "users":["test1@xxx.com"]
  }
}]

---

GQL查询类似于-

SELECT * FROM Event WHERE users='test1@xxx.com' 

---

您需要确保为

users

属性编制索引，以便搜索工作，否则可能无法返回任何结果

GQL查询类似于-

SELECT * FROM Event WHERE users='test1@xxx.com' 

您需要确保为

users

属性编制索引，以便搜索工作，否则可能无法返回任何结果