MarkLogic 12 EA 1 Product Documentationcts:reference-nullable
cts:reference-nullable( $reference as cts:reference ) as xs:boolean
Summary
Returns true() if the reference is nullable, false() otherwise.
| Parameters | |
|---|---|
| reference | An index reference. |
Example
cts:reference-nullable(cts:element-reference("title","nullable"))
=>
true()