Add example for CIR-2017-173

Fixes opencypher#173
Mats-SX · Mar 1, 2017 · 49f1aa6 · 49f1aa6
1 parent 5fdef2c
commit 49f1aa6
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/cip/1.accepted/CIP2016-12-14-Constraint-syntax.adoc b/cip/1.accepted/CIP2016-12-14-Constraint-syntax.adoc
@@ -217,6 +217,14 @@ FOR (p:Programmer)
 REQUIRE p:Person
 ----
 
+.Constraint example from CIR-2017-173
+[source, cypher]
+----
+CREATE CONSTRAINT enforce_dag_unique_for_R_links
+FOR p = (a)-[:R]-(b)
+REQUIRE length(p) < 2
+----
+
 === Interaction with existing features
 
 The main interaction between the constraints and the rest of the language occurs during updating statements.