You can perform Couchbase Query Language (N1QL) queries via Couchnode.

To send N1QL queries, you must specify a list of application query hosts through the enableN1ql method (a temporary necessity). After you have done this, you can perform a N1QL query by using the query() method, which accepts a query created through the N1qlQuery class. You receive an array of objects representing the results through your specified callback.

The following example shows how to send a N1QL query:

var N1qlQuery = require('couchbase').N1qlQuery;
var myBucket = myCluster.openBucket();
var query = N1qlQuery.fromString('SELECT * FROM default');
myBucket.query(query, function(err, res) {
  if (err) {
    console.log(‘query failed’, err);
    return;
  }
  console.log(‘success!’, res);
});

Sample output from the example:

success! [
  { field_name: ‘value’ },
  { field_name: ‘value’ }
]