To get all the MongoDB documents with some given criteria’s, following any of the below given cases
Case 1 Following is the query to get all the documents without a single criterion using $ne operator
db.yourCollectionName.find({yourFieldName:{$ne:"yourValue"}}).pretty();
Case 2 Following is the query to get all the documents without two given criterions using $nin operator
db.yourCollectionName.find({yourFieldName:{$nin:["yourValue1","yourValue2"]}}).pretty();
Let us first create a collection. Following is the query to create a collection with documents
>db.findAllExceptFromOneOrtwoDemo.insertOne({"StudentName":"Larry","StudentSubjectName":"Java"}); { "acknowledged" : true, "insertedId" : ObjectId("5c993d82330fd0aa0d2fe4d2") } >db.findAllExceptFromOneOrtwoDemo.insertOne({"StudentName":"Chris","StudentSubjectName":"C++"}); { "acknowledged" : true, "insertedId" : ObjectId("5c993d8f330fd0aa0d2fe4d3") } >db.findAllExceptFromOneOrtwoDemo.insertOne({"StudentName":"Robert","StudentSubjectName":"C"}); { "acknowledged" : true, "insertedId" : ObjectId("5c993d99330fd0aa0d2fe4d4") } >db.findAllExceptFromOneOrtwoDemo.insertOne({"StudentName":"David","StudentSubjectName":"Python"}); { "acknowledged" : true, "insertedId" : ObjectId("5c993da4330fd0aa0d2fe4d5") }
Following is the query to display all documents from a collection with the help of find() method
> db.findAllExceptFromOneOrtwoDemo.find().pretty();
This will produce the following output
{ "_id" : ObjectId("5c993d82330fd0aa0d2fe4d2"), "StudentName" : "Larry", "StudentSubjectName" : "Java" } { "_id" : ObjectId("5c993d8f330fd0aa0d2fe4d3"), "StudentName" : "Chris", "StudentSubjectName" : "C++" } { "_id" : ObjectId("5c993d99330fd0aa0d2fe4d4"), "StudentName" : "Robert", "StudentSubjectName" : "C" } { "_id" : ObjectId("5c993da4330fd0aa0d2fe4d5"), "StudentName" : "David", "StudentSubjectName" : "Python" }
Case 1 Single Criteria
Following is the query
> db.findAllExceptFromOneOrtwoDemo.find({StudentSubjectName:{$ne:"C"}}).pretty();
This will produce the following output
{ "_id" : ObjectId("5c993d82330fd0aa0d2fe4d2"), "StudentName" : "Larry", "StudentSubjectName" : "Java" } { "_id" : ObjectId("5c993d8f330fd0aa0d2fe4d3"), "StudentName" : "Chris", "StudentSubjectName" : "C++" } { "_id" : ObjectId("5c993da4330fd0aa0d2fe4d5"), "StudentName" : "David", "StudentSubjectName" : "Python" }
Case 2 Two criterions
Following is the query
>db.findAllExceptFromOneOrtwoDemo.find({StudentSubjectName:{$nin:["C++","Python"]}}).pretty();
This will produce the following output
{ "_id" : ObjectId("5c993d82330fd0aa0d2fe4d2"), "StudentName" : "Larry", "StudentSubjectName" : "Java" } { "_id" : ObjectId("5c993d99330fd0aa0d2fe4d4"), "StudentName" : "Robert", "StudentSubjectName" : "C" }