gpt4 book ai didi

azure - 如何通过查询资源管理器清除DocumentDB中的集合

转载 作者:行者123 更新时间:2023-12-04 16:58:10 25 4
gpt4 key购买 nike

删除集合中所有文档的查询或其他快速方法是什么?现在我正在删除整个集合并再次重新创建。

最佳答案

What's the query or some other quick way to remove all the documents in a collection?

正如 Chris Pietschmann 提到的,目前 Azure 门户不支持它,并且此 feature由 Azure Documentdb 团队负责。

我们可以使用服务器端脚本(例如存储过程、udfs、触发器)来做到这一点我从另一个 SO thread 得到以下代码。它在我这边工作正常。

/**
* A DocumentDB stored procedure that bulk deletes documents for a given query.<br/>
* Note: You may need to execute this sproc multiple times (depending whether the sproc is able to delete every document within the execution timeout limit).
*
* @function
* @param {string} query - A query that provides the documents to be deleted (e.g. "SELECT * FROM c WHERE c.founded_year = 2008")
* @returns {Object.<number, boolean>} Returns an object with the two properties:<br/>
* deleted - contains a count of documents deleted<br/>
* continuation - a boolean whether you should execute the sproc again (true if there are more documents to delete; false otherwise).
*/
function bulkDeleteSproc(query) {
var collection = getContext().getCollection();
var collectionLink = collection.getSelfLink();
var response = getContext().getResponse();
var responseBody = {
deleted: 0,
continuation: true
};

// Validate input.
if (!query) throw new Error("The query is undefined or null.");

tryQueryAndDelete();

// Recursively runs the query w/ support for continuation tokens.
// Calls tryDelete(documents) as soon as the query returns documents.
function tryQueryAndDelete(continuation) {
var requestOptions = {continuation: continuation};

var isAccepted = collection.queryDocuments(collectionLink, query, requestOptions, function (err, retrievedDocs, responseOptions) {
if (err) throw err;

if (retrievedDocs.length > 0) {
// Begin deleting documents as soon as documents are returned form the query results.
// tryDelete() resumes querying after deleting; no need to page through continuation tokens.
// - this is to prioritize writes over reads given timeout constraints.
tryDelete(retrievedDocs);
} else if (responseOptions.continuation) {
// Else if the query came back empty, but with a continuation token; repeat the query w/ the token.
tryQueryAndDelete(responseOptions.continuation);
} else {
// Else if there are no more documents and no continuation token - we are finished deleting documents.
responseBody.continuation = false;
response.setBody(responseBody);
}
});

// If we hit execution bounds - return continuation: true.
if (!isAccepted) {
response.setBody(responseBody);
}
}

// Recursively deletes documents passed in as an array argument.
// Attempts to query for more on empty array.
function tryDelete(documents) {
if (documents.length > 0) {
// Delete the first document in the array.
var isAccepted = collection.deleteDocument(documents[0]._self, {}, function (err, responseOptions) {
if (err) throw err;

responseBody.deleted++;
documents.shift();
// Delete the next document in the array.
tryDelete(documents);
});

// If we hit execution bounds - return continuation: true.
if (!isAccepted) {
response.setBody(responseBody);
}
} else {
// If the document array is empty, query for more documents.
tryQueryAndDelete();
}
}
}

在Azure门户上执行的更详细步骤如下:

  1. 检查集合中文档的数量

enter image description here

  • 在集合中创建农产品商店
  • enter image description here

  • 检查集合中的所有文档是否已删除
  • enter image description here

    关于azure - 如何通过查询资源管理器清除DocumentDB中的集合,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43587572/

    25 4 0
    Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
    广告合作:1813099741@qq.com 6ren.com