DocumentDB: Issue with updating list with multiple columns - azure

Question

I have a document where I want turn of is_approved = false, if multiple columns are similar(posted_by and location).
I am not able to write a query which can get multiple duplicate columns..
function Prop() {
var collection = getContext().getCollection();
var collectionLink = collection.getSelfLink();
var response = getContext().getResponse();
var counter = 0;
var responseBody = {
updated: 0,
continuation: true,
error: "",
log: ""
};
// Validate input.
getFullListOfPosts();
// Recursively queries for a document by id w/ support for continuation tokens.
// Calls findDuplicates(document) as soon as the query returns a document.
function getFullListOfPosts(continuation) {
var query = {
query: "select * from root r ORDER BY r.created.epoch DESC"
};
var requestOptions = {
continuation: continuation
};
var isAccepted = collection.queryDocuments(collectionLink, query, requestOptions, proccessFullListOfPosts);
// If we hit execution bounds - throw an exception.
if (!isAccepted) {
responseBody.log += "Query not accepted";
response.setBody(responseBody);
}
}
function proccessFullListOfPosts(err, documents, responseOptions) {
if (err) {
responseBody.error = err;
throw err;
}
if (documents.length > 0) {
// If documents are found, update them.
responseBody.log += "Found documents: " + documents.length;
findDuplicates(documents);
}
}
// Updates the supplied document according to the update object passed in to the sproc.
function findDuplicates(documents) {
if (documents.length > 0) {
responseBody.log += "Updating documents " + documents.length;
//for (var i = 0; i < documents.length; i++) {
var first = documents[0];
//The below query is not right. I want the above query to fetch all records with same posted_by and location and turn its is_approved to false
var query = 'select * from root r WHERE r.is_approved = true AND r.posted_by = "' + first.posted_by + '"';
var requestOptions = {
etag: first._etag
};
var isAccepted = collection.queryDocuments(collectionLink, query, requestOptions, identifyRecordsToDisable);
// Update the document. // If we hit execution bounds - throw an exception.
if (!isAccepted) {
responseBody.log += "Update not accepted";
response.setBody(responseBody);
}
} else {
getFullListOfPosts();
}
}
function identifyRecordsToDisable(err, documents, responseOptions) {
if (err) {
responseBody.error = err;
throw err;
}
if (documents.length > 0) {
// If documents are found, update them.
responseBody.log += "Found documents: " + documents.length;
for (var i = 0; i < documents.length; i++) {
var j = documents[i];
j.is_approved = false;
responseBody.log += "^Updated" + j.id + j.is_approved + ""
var requestOptions = {
etag: j._etag
};
var isAccepted = collection.replaceDocument(j._self, j, requestOptions, onReplaced);
responseBody.log += "*" + j.id + j.is_approved + "*"
}
findDuplicates(documents);
}
}
function onReplaced(err, updatedDocument, responseOptions) {
if (err) {
responseBody.error = err;
//throw err;
}
counter++;
response.setBody("Updated " + counter + " documents");
}
}
In the above code, in the function 'findDuplicates', I am unable to write a correct query through which I can get all the duplicate records.
I tried using distinct, group by. having. I think documented doesn't support them

Answer 1

The following query should help you find documents that match both property values.
SELECT *
FROM root r
WHERE r.is_approved = true
AND r.posted_by = "' + first.posted_by + '"
AND r.location = "' + first.location + '"