How the arrayFilters Parameter Works in MongoDB

In MongoDB, when you update documents that contain arrays, you have the option of using the arrayFilters parameter.

The arrayFilters parameter allows you to specify an array of filter documents that determine which array elements to modify.

In the update document, use the $[<identifier>] filtered positional operator, which identifies the array elements that match the arrayFilters conditions for the update operation.

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MongoDB $max

MongoDB has a $max operator that allows you to update the value of a field only if the specified value is greater than the current value of the field.

In other words, if the $max value is greater than the current value in the document, the $max value is used. Otherwise, the document’s value remains unchanged.

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