Like collections, views should have a default collation. You can specify a default collation for a view at creation time; if no collation is specified, the view's default collation is the "simple" collator.

The default collation of a view should not be overridden. This prevents a user from circumventing field-level redaction performed in the view pipeline that is implemented with string comparisons. The following operations should fail with an OptionNotSupportedOnView error:

• Specifying a per-operation collation that differs from an operation involving a view, whether directly or via $lookup or $graphLookup
• Performing any operation that involves multiple views (i.e. via $lookup or $graphLookup) where the views don't all have the same collation
• Creating a view to depend on another view that does not have a matching collation
• Modifying a view to depend on another view that does not have a matching collation