MQL reference navigation
MongoDB Query Language (MQL) Array Expression Operators
Array expression operators perform operations on arrays and array elements.
$arrayElemAt
The $arrayElemAt returns the element at the specified array index.
$arrayToObject
The $arrayToObject allows converting an array into a single document.
$concatArrays
The $concatArrays is used to combine multiple arrays into a single array.
$filter
The $filter operator filters for elements from an array based on a specified condition.
$indexOfArray
The $indexOfArray operator is used to search for an element in an array and return the index of the first occurrence of the element.
$isArray
The $isArray operator is used to determine if a specified value is an array.
$map
The $map operator allows applying an expression to each element in an array.
$range
The $range operator allows generating an array of sequential integers.
$reduce
The $reduce operator applies an expression to each element in an array & accumulate result as single value.
$reverseArray
The $reverseArray operator is used to reverse the order of elements in an array.
$slice
The $slice operator returns a subset of an array from any element onwards in the array.
$sortArray
The $sortArray operator helps in sorting the elements in an array.
$zip
The $zip operator allows merging two or more arrays element-wise into a single array or arrays.