Updating documents

After executing some basic SELECT queries against our collection, it is time to do some updating. This means looking up the document, changing information, and saving it to the collection. Consider the following C# code snippet:

Updating documents

In the following code snippets, we will update a document, set a new date of birth, and save the document to the collection.

Note

To enable faster processing, we store the DateTime fields as epoch values so that range queries are executed efficiently.

I used information from the official Azure blogs (http://azure.microsoft.com/blog/2014/11/19/working-with-dates-in-azure-documentdb-4/) to create the following code snippet. Instead of comparing dates, the corresponding epoch values are compared inside the query. First, a document is retrieved from the collection using a filter on the first and last name. A new date of birth value is created and written back to the collection. The code is as follows:

var documentByLinq = (from c in client...