sample.js

Promise.try(() => {
  return Promise.all([
    knex('course_requests').select('*'),
    knex('course_requests').distinct('CourseTitle').select().groupBy('CourseTitle')
  ])
}).then(([allrecords, rows]) => {
  /*
    if rows: [
      A: {
        foo:bar,
        value:key
      },
      B: {
        foo:bar,
        value,key
      }
    ]
  */
  return Promise.map(rows, (entry) => {
    var obj = entry;
    return Object.assign(entry, {obj})
  })
}).then((data) => {
  console.log(data)
})