Function execute_optional_match

nodedb/src/engine/graph/pattern/executor/mod.rs:423–431

()

    #[test]
    fn execute_optional_match() {
        let (csr, store, _dir) = make_social_graph();
        let query = super::super::compiler::parse(
            "MATCH (a)-[:KNOWS]->(b) OPTIONAL MATCH (b)-[:LIKES]->(c) WHERE a = 'alice' RETURN a, b, c",
        ).unwrap();
        let rows = execute(&query, &csr, &store, None).unwrap().rows;
        assert_eq!(rows.len(), 1);
        assert_eq!(rows[0]["c"], "NULL");
    }

    #[test]
    fn execute_anti_join() {