MarkLogic 12 EA 1 Product Documentationop:where-distinct
op:where-distinct( $plan as map:map ) as map:map
Summary
This method removes duplicate rows from the row set.
| Parameters | |
|---|---|
| $plan | The Optic Plan. You can either use the XQuery => chaining operator or specify the variable that captures the return value from the previous operation. |
Example
xquery version "1.0-ml";
import module namespace op="http://marklogic.com/optic"
at "/MarkLogic/optic.xqy";
op:from-literals((
map:entry("id", 1) => map:with("val", 2),
map:entry("id", 1) => map:with("val", 2),
map:entry("id", 2) => map:with("val", 4)
))
=> op:select(())
=> op:where-distinct()
=> op:result()