ascending( )

Adds a sort stage that sorts the aggregation results by the specified fields in ascending order.

The ascending() method refines the aggregation to sort results in ascending order of the specified fields. If you specify more than one field, ascending() sorts the results in ascending order by each field in the order they are listed.

You can sort the following types:

• Number: Sorts numerically.
• Date: Sorts by date and time.
• String: Sorts lexicographically, so "abc" comes after "XYZ".
• Reference: Compares by the ID of the referenced item as a String.

If a property contains a number as a String, that value is sorted alphabetically and not numerically. Items that do not have a value for the specified sort property are ranked lowest.