In MongoDB, the $and aggregation pipeline operator evaluates one or more expressions and returns true if they all evaluate to true, or if its invoked with no arguments. Otherwise it returns false.
Tag: aggregation
MongoDB $arrayToObject
In MongoDB, the $arrayToObject aggregation pipeline operator converts an array to a document.
MongoDB $objectToArray
In MongoDB, the $objectToArray aggregation pipeline operator converts a document to an array.
MongoDB $not Aggregation Pipeline Operator
In MongoDB, the $not aggregation pipeline operator evaluates a boolean and returns the opposite boolean value.
In other words, when the boolean evaluates to true, the $not operator returns false. And when the boolean evaluates to false, the $not operator returns true.
MongoDB $mod
In MongoDB, the $mod aggregation pipeline operator divides one number by another and returns the remainder.
To use $mod, pass the two numbers in an array. The $mod operator will divide the first number by the second number and return the remainder. In other words, the first number is the dividend, and the second number is the divisor.
The arguments can be any valid expression as long as they resolve to numbers.
Continue readingMongoDB $max Aggregation Pipeline Operator
In MongoDB, the $max aggregation pipeline operator returns the maximum value from an expression.
MongoDB $min Aggregation Pipeline Operator
In MongoDB, the $min aggregation pipeline operator returns the minimum value from an expression.
MongoDB $sum Aggregation Pipeline Operator
In MongoDB, the $sum aggregation pipeline operator calculates and returns the sum of numeric values.
MongoDB $avg Aggregation Pipeline Operator
In MongoDB, the $avg aggregation pipeline operator calculates and returns the average value of the specified numeric values.
MongoDB $substrBytes
In MongoDB, the $substrBytes aggregation pipeline operator returns the substring of a string, based on the specified UTF-8 encoded bytes indexes.