Minimize data once more using various key criteria

In my current setup, I have created a view that counts reports for different cities.

function (doc) {
  if(doc.type == "report")
  {
     emit(doc.city_name, null);
  }
}

Using the _count reduce function, I get the following values:

{'key': 'South Tampa', 'value': 2}
{'key': 'Sebring', 'value': 19}
{'key': 'Satsuma', 'value': 3}
{'key': 'Palm Desert', 'value': 1}
{'key': 'Indio', 'value': 1}

Currently, I am making requests to this view with multiple keys (such as ["Indio", "Satsuma"]) and then summing them in Python.

I'm curious if it is possible to perform the summation directly within CouchDB itself?

javascriptcouchdb

Answer №1

If you're looking to achieve a specific goal, the Couchdb List function could be a valuable tool for you.

For more information on how to effectively utilize this function, check out this helpful article:

This guide can also provide insight on how to make the most of the list function:

Here is an example of a list function that calculates the total sum:

function(head, req){ 
  i = 0; 
  while(row = getRow()){ i += row.value; } 
  send('{ \"total_count\":' + i +'}'); 
}

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