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openCypher: Technology Compatibility Kit (TCK) and Vendor Extensions
- 5. opencypher.orgopencypher.org | opencypher@googlegroups.com Scenario: Optionally matching named paths Given an empty graph And having executed: """ CREATE (a {name: 'A'}), (b {name: 'B'}), (c {name: 'C'}) CREATE (a)-[:X]->(b) """ When executing query: """ MATCH (a {name: 'A'}), (x) WHERE x.name IN ['B', 'C'] OPTIONAL MATCH p = (a)-->(x) RETURN x, p """ Then the result should be: | x | p | | ({name: 'B'}) | <({name: 'A'})-[:X]->({name: 'B'})> | | ({name: 'C'}) | null | And no side effects Background: Given any graph Scenario: Creating a node When executing query: """ CREATE () """ Then the result should be empty And the side effects should be: | +nodes | 1 |
- 14. opencypher.orgopencypher.org | opencypher@googlegroups.com • • MATCH (c:City {name:'Malmö'}), (b:Building) WHERE spatial.sizeOf(b.shape) > 30m² AND b.shape WITHIN c.shape • • MATCH (n:Person {name:'John'}) USING SCAN n:Person • • CREATE ELABEL room_mate inherits(friends, live_together)
- 16. opencypher.orgopencypher.org | opencypher@googlegroups.com CYPHER [version] {attribute = value} ... … • CYPHER 10 MATCH (n) RETURN n; • CYPHER version=10 MATCH (n) RETURN n; • CYPHER neo4j-3.1 MATCH (n) RETURN n; • CYPHER neo4j-3.2 debug=sourcecode debug=bytecode MATCH (n) RETURN n; • CYPHER planner=idp MATCH (n) RETURN n;