Querying Data Using MongoDB's Find() Function
In a recent data operation, a MongoDB query was executed to retrieve student records from the "student" collection. The query was designed to specifically target student records based on certain exam performance conditions.
The query uses a nested document to specify these conditions within the "score" field of each student record. More precisely, it searches for student records where the math score is exactly 230 and the science score is exactly 234.
Once the desired records were identified, the projection operation was implemented. This operation includes only the desired field while explicitly excluding the unwanted field. In this case, the query returns only the "Name" field for each student record that meets the specified conditions.
To ensure the first two student records were returned, the limit operation was employed. This operation restricts the number of documents returned to the specified value.
Finally, the sorting operation was applied to sort student records by age in ascending order. This ensures that the youngest students are listed first.
The MongoDB query for this operation can be written as follows:
This query, when executed, will return the names of the two youngest students who scored exactly 230 in math and 234 in science on their exams.
Read also:
- Transforming Digital Inventories in the Food Industry: A Comprehensive Guide for Food Businesses
- Munich Airport Unveils Its New Electrical Vehicle Charging Parksite
- Partnership between MTN South Africa and SANTACO aims to advanced transportation systems and stimulate economic opportunities for the masses in South Africa.
- Rapid Construction of Rajasthan's 435 Megawatt Solar Power Plant in Eight Months Reduces Carbon Dioxide Emissions by Over 700,000 Tons
%20Function){kind=link}