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MongoDB-operators

44 posts

How to write a function to get rows from database by multiple columns conditionally ?

Last Updated: 23 July 2025

MongoDB, the most popular NoSQL database, we can get rows from the database by multiple columns conditionally from MongoDB Collection using the MongoDB collection.find() f...read more

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Web Technologies

MongoDB-operators

How to Check Field Existence in MongoDB?

Last Updated: 23 July 2025

MongoDB is a NoSQL database that offers a variety of operators to enhance the flexibility and precision of queries. One such operator is $exists, which is used to check th...read more

MongoDB-operators

MongoDB - Regex

Last Updated: 23 July 2025

The $regex operator in MongoDB is a powerful tool that provides regular expression capabilities for pattern matching within strings in queries. It is particularly useful w...read more

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MongoDB-operators

MongoDB $substrCP Operator

Last Updated: 16 April 2026

The $substrCP operator in MongoDB extracts substrings based on Unicode code points within the aggregation pipeline, ensuring correct handling of both ASCII and non-ASCII c...read more

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MongoDB-operators

Adding and Querying the Data in MongoDB

Last Updated: 15 July 2025

In MongoDB, data is stored in BSON format within collections. This guide covers the essential steps for adding and querying data in MongoDB, including creating collections...read more

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Web Technologies

MongoDB-operators

MongoDB -$arrayElemAt Operator

Last Updated: 15 April 2026

The $arrayElemAt operator retrieves a specific element from an array by index and is commonly used in aggregation pipelines to extract targeted values efficiently.Returns ...read more

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MongoDB-operators

MongoDB $concatArrays Operator

Last Updated: 05 May 2026

The $concatArrays operator in MongoDB combines two or more arrays into a single array within the aggregation pipeline, preserving the original order of elements.Merges mul...read more

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MongoDB-operators

MongoDB - $isArray Operator

Last Updated: 15 April 2026

The $isArray operator in MongoDB checks whether a given field or expression evaluates to an array and returns a boolean result, helping handle mixed data types safely in a...read more

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MongoDB-operators

MongoDB $reverseArray Operator

Last Updated: 15 April 2026

The $reverseArray operator in MongoDB reverses the order of elements in an array within the aggregation pipeline, making it useful for data processing and presentation whe...read more

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MongoDB-operators

MongoDB -$size Operator

Last Updated: 15 April 2026

The $size operator in MongoDB returns the count of elements in an array field and is widely used in aggregation pipelines to filter documents and compute derived values ba...read more

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MongoDB-operators

MongoDB $pow Operator

Last Updated: 15 July 2025

MongoDB's $pow operator is a powerful tool within the aggregation framework which is designed to compute exponentiation operations directly on numeric fields. In this arti...read more

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MongoDB-operators

MongoDB $exp Operator

Last Updated: 15 July 2025

MongoDB's aggregation framework provides a powerful set of tools for data manipulation and processing. One such tool is the $exp operator which allows users to perform exp...read more

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MongoDB-operators

MongoDB $cmp Operator

Last Updated: 05 May 2026

The MongoDB $cmp operator compares two values and returns their order. It is used in aggregation pipelines for sorting and conditional logic, and follows BSON type orderin...read more

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MongoDB-operators

MongoDB $strcasecmp Operator

Last Updated: 05 May 2026

$strcasecmp performs case-insensitive alphabetical comparison between two strings in the aggregation pipeline and returns a numeric value that indicates their relative ord...read more

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MongoDB-operators

MongoDB $toUpper Operator

Last Updated: 05 May 2026

The $toUpper operator converts string values to uppercase within the aggregation pipeline, enabling consistent text normalization, formatting, and case-insensitive operati...read more

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MongoDB-operators

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