db.employees.insertMany([
  {empId: 1, name: 'Clark', dept: 'Sales' },
  {empId: 2, name: 'Dave', dept: 'Accounting' },
  {empId: 3, name: 'Ava', dept: 'Sales' }
]);



//db.employees.aggregate([{  $match:{   empId: { $gt: 2 }  } } ])
//db.employees.find({dept: 'Sales'});
//db.employees.aggregate([{  $match:{    empId:1  } } ])