Table of Contents
How to sort data in MongoDB by date?
Definition of MongoDB sort by date
- db.collection_name.find ().sort ( { name_of_date_field : 1 (Display the date in ascending order)} )
- db.collection_name.find ().sort ( { name_of_date_field : -1 (Display the date in descending order) } )
How do I sort objects in MongoDB?
To sort documents in MongoDB, you need to use sort() method. The method accepts a document containing a list of fields along with their sorting order. To specify sorting order 1 and -1 are used. 1 is used for ascending order while -1 is used for descending order.
How do I sort an array element in MongoDB?
To sort the whole array by value, or to sort by array elements that are not documents, identify the input array and specify 1 for an ascending sort or -1 for descending sort in the sortBy parameter.
How do I sort a date string in MongoDB?
In MongoDB, you have to use the sort() method for sort by date using an array. In the sort() method you have to specify the date field by which you want to sort and direction (ascending or descending order). Here, the student is the collection name and for inserting the date we use the ISODate() function.
What library does Mongosniff require?
Online Test
| 10. | mongosniff requires the ___________ network library and is only available for Unix-like systems. |
|---|---|
| a. | Wirecap |
| b. | Libpcap |
| c. | Wcap |
| d. | None of the mentioned |
Which type of sorting is not supported by MongoDB?
collation-based sorting
Explanation: MongoDB does not support collation-based sorting and is limited to byte-wise comparison via memcmp.
Which of the following types of sorting is not supported by MongoDB?
Explanation: MongoDB does not support collation-based sorting and is limited to byte-wise comparison via memcmp.
What is $project in MongoDB?
Description. The $project function in MongoDB passes along the documents with only the specified fields to the next stage in the pipeline. This may be the existing fields from the input documents or newly computed fields. Syntax: { $project: { } }
How do I limit in MongoDB?
The Limit() Method To limit the records in MongoDB, you need to use limit() method. The method accepts one number type argument, which is the number of documents that you want to be displayed.
How do I count records in MongoDB?
MongoDB: db. collection. count() method
- db. collection.
- Example: Count all document from the collection. Count the number of the documents in the restaurants collection.
- Example : Count all Documents that Match a Query.
- Example : Count all Documents that Match a Query using more than on criteria.
- Behavior.