bson | constructors
This subsection describes BSON constructor functions that are concerned with maxKey, minKey, null and undefined values, all of which are defined in the BSON Specification.
Important: The bson functions are compatible only with the Built-In transformation language.
The bson-maxKey function (see screenshot below) enables you to construct a maxKey value on the selected node of the database component.  |
The bson-minKey function (see screenshot below) enables you to construct a minKey value on the selected node of the database component.  |
The bson-null function (see screenshot below) constructs a BSON null value on the selected node of your database component.  |
The bson-undefined function (see screenshot below) enables you to construct an undefined value on the selected node of the database component.  |