MongoDB বা অপারেটরের সাথে একাধিক মান নির্বাচন করুন

আসুন প্রথমে নথি-

> db.demo270.insertOne({"ClientName":"Chirs","Age":34});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e481e371627c0c63e7dbab8")
}
> db.demo270.insertOne({"ClientName":"David","Age":31});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e481e3d1627c0c63e7dbab9")
}
> db.demo270.insertOne({"ClientName":"Bob","Age":31});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e481e431627c0c63e7dbaba")
}
> db.demo270.insertOne({"ClientName":"Carol","Age":36});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e481e491627c0c63e7dbabb")
}

Find() পদ্ধতি -

> db.demo270.find();

এটি নিম্নলিখিত আউটপুট −

{ "_id" : ObjectId("5e481e371627c0c63e7dbab8"), "ClientName" : "Chirs", "Age" : 34 }
{ "_id" : ObjectId("5e481e3d1627c0c63e7dbab9"), "ClientName" : "David", "Age" : 31 }
{ "_id" : ObjectId("5e481e431627c0c63e7dbaba"), "ClientName" : "Bob", "Age" : 31 }
{ "_id" : ObjectId("5e481e491627c0c63e7dbabb"), "ClientName" : "Carol", "Age" : 36 }

OR অপারেটর −

> db.demo270.find({
...   "$or" : [
...      {
...         "ClientName" : "Carol"
...      },
...      {
...         "Age" : 31
...      }
...   ]
...}
...);

এটি নিম্নলিখিত আউটপুট −

{ "_id" : ObjectId("5e481e3d1627c0c63e7dbab9"), "ClientName" : "David", "Age" : 31 }
{ "_id" : ObjectId("5e481e431627c0c63e7dbaba"), "ClientName" : "Bob", "Age" : 31 }
{ "_id" : ObjectId("5e481e491627c0c63e7dbabb"), "ClientName" : "Carol", "Age" : 36 }