检查CosmosDB的集合中是否存在该分区键

const { CosmosClient } = require("@azure/cosmos");

const endpoint = "your_cosmosdb_endpoint";
const key = "your_cosmosdb_key";
const databaseId = "your_database_id";
const containerId = "your_container_id";
const partitionKey = "partitionKey_value";

async function checkPartitionKeyExists() {
  const client = new CosmosClient({ endpoint, key });
  const database = client.database(databaseId);
  const container = database.container(containerId);

  const query = `SELECT VALUE COUNT(1) FROM c WHERE c.partitionKey = "${partitionKey}"`;

  const { resources: results } = await container.items.query(query).fetchAll();

  const count = results[0];

  if (count > 0) {
    console.log(`The partition key "${partitionKey}" exists in the collection.`);
  } else {
    console.log(`The partition key "${partitionKey}" does not exist in the collection.`);
  }
}

checkPartitionKeyExists().catch((error) => {
  console.error("Error:", error);
});