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Variable collection name in MongoDB shell with JavaScript?
Yes, you can set a variable collection name in MongoDB shell using JavaScript. Let us first create a collection with documents −
> db.employeeInformation.insertOne({"EmployeeName":"John Smith","EmployeeAge":24,"EmployeeSalary":450000});
{
"acknowledged" : true,
"insertedId" : ObjectId("5cc6d06baf8e7a4ca6b2ad97")
}Following is the query to display all documents from a collection with the help of find() method −
> db.employeeInformation.find();
This will produce the following output −
{ "_id" : ObjectId("5cc6d06baf8e7a4ca6b2ad97"), "EmployeeName" : "John Smith", "EmployeeAge" : 24, "EmployeeSalary" : 450000 }Here is the query to set variable collection name in MongoDB shell using JavaScript.
Case 1 − Set variable with var
The query is as follows −
> var status=db.employeeInformation; > status.find();
This will produce the following output −
{ "_id" : ObjectId("5cc6d06baf8e7a4ca6b2ad97"), "EmployeeName" : "John Smith", "EmployeeAge" : 24, "EmployeeSalary" : 450000 }Case 2 − We have assigned another variable collection name in MongoDB with var. The query is as follows −
> var employeeDetails=db.employeeInformation; > employeeDetails.find().pretty();
This will produce the following output −
{
"_id" : ObjectId("5cc6d06baf8e7a4ca6b2ad97"),
"EmployeeName" : "John Smith",
"EmployeeAge" : 24,
"EmployeeSalary" : 450000
}
Updated on: 30-Jul-2019
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