Select distinct count cloudant/couchdb

Question

I am starting a project using Cloudant. It\'s a simple system for logging, so I can track the usage of my apps.

My documents looks like this:

{
app:\'na

Answer 1

You can do this using design documents, as Cesar mentioned. A concrete example would be to create a view where your map function emits the field on where you want to group on, such as:

function(doc) {
  emit(doc.email, 1);
}

Then, you select your desired reduce function (such as _count). When viewing this on Cloudant dashboard, make sure you select Reduce as part of the query options. When accessing the view via URL you need to pass the appropriate parameters (reduce=true&group=true).

The documentation on Views here is pretty thorough: https://docs.cloudant.com/creating_views.html