Optional_Optional_Same as forEach, but will produce a row with null values if the collection is empty.
Optional_FHIRPath expressions to recursively select from.
OptionalcolumnA column to be produced in the resulting table.
OptionalextensionAdditional content defined by implementations
OptionalforA FHIRPath expression to retrieve the parent element(s) used in the containing select. The default is effectively $this.
OptionalforSame as forEach, but will produce a row with null values if the collection is empty.
OptionalidUnique id for inter-element referencing
OptionalmodifierExtensions that cannot be ignored even if unrecognized
OptionalrepeatFHIRPath expressions to recursively select from.
OptionalselectNested select relative to a parent expression.
OptionalunionCreates a union of all rows in the given selection structures.
A FHIRPath expression to retrieve the parent element(s) used in the containing select. The default is effectively
$this.