Possibly empty sequence of colon-terminated Transform names identifying a chain of value transformations
within an Expression (for example, round:avg:). Transforms are applied right-to-left in functional
composition order; the empty pipe denotes the identity transformation and passes the value through unchanged.
Transform pipe.
Possibly empty sequence of colon-terminated Transform names identifying a chain of value transformations within an Expression (for example,
round:avg:). Transforms are applied right-to-left in functional composition order; the empty pipe denotes the identity transformation and passes the value through unchanged.Composition rules and valid/invalid combinations are defined in Transform Pipe Composition.
This is a type alias for documentation purposes only; pipe syntax is validated at runtime by query processors.