英文:
Query values in multiple document using "IN" in gcp datastore
问题
在GCP数据存储中，我有以下文档：
Kind: "User"
{name: "jay", age: 24, key: Key(["User", 1])}
{name: "jet", age: 35, key: Key(["User", 2])}
{name: "sam", age: 28, key: Key(["User", 3])}
我想要使用GCP数据存储的Node SDK查询具有以下键的用户：Key(["User", 1]) 和 Key(["User", 2])。
我正在使用以下查询来实现这个目标：
const {Datastore} = require('@google-cloud/datastore');
const datastore = new Datastore();
const key1 = datastore.key(["User", 1]);
const key2 = datastore.key(["User", 2]);
const query = datastore.createQuery("User").filter('__key__', 'IN', [key1, key2]);
但是，在运行上面的查询时，我收到以下错误信息：
InvalidKey: A key should contain at least a kind.
但是，这些键已经包含了"User"种类（kind）信息。
英文:
I have following documents in gcp datastore:
Kind: "User"
{name: "jay", age: 24, key: Key(["User", 1])}
{name: "jet", age: 35, key: Key(["User", 2])}
{name: "sam", age: 28, key: Key(["User", 3])}
Using node sdk for gcp datastore I want to query users with keys: Key(["User", 1]) & Key(["User", 2])
I am using following query for the same:
const {Datastore} = require('@google-cloud/datastore');
const datastore = new Datastore();
const key1 = datastore.key(["User", 1]);
const key2 = datastore.key(["User", 2]);
const query = datastore.createQuery("User").filter('__key__', 'IN', [key1, key2]);
On running the above query using following code:
datastore.runQuery(query)
.then(users => {
console.log(users)
})
.catch(err => console.log(err));
I am getting following error:
InvalidKey: A key should contain at least a kind.
But the keys already contain the kind "User".
答案1
得分: 1
根据文档（查找"您可以查找多个实体"），您应该尝试这样做：
const [users] = await datastore.get([key1, key2]);
console.log(users)
英文:
According to the documentation (look for 'You can look up multiple entities'), you should try this instead
const [users] = await datastore.get([key1, key2]);
console.log(users)
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