什么是更好的架构?
我相信您指的是所谓的“图形建模”。基本形式的图建模包括从句子中派生实体和动词
可以从用户存款。其他一些用户最终可以提取该存款,
- 实体:付款/存款/交易(我假设您可以互换使用)和用户
- 动词:存款和取款
所以你做得很好。
关于你的第二个问题。给定两笔交易
(u1:User {uid:1})-[:Deposit]->(t1:Transaction {tid:1})<-[:Withdrawal]-(u3:User {uid:3})
(u2:User {uid:2})-[:Deposit]->(t2:Transaction {tid:2})
redis:6379> GRAPH.QUERY g "MERGE (u1:User {uid:1})-[:Deposit]->(t1:Transaction {tid:1})<-[:Withdrawal]-(u3:User {uid:3}) MERGE (u2:User {uid:2})-[:Deposit]->(t2:Transaction {tid:2})"
1) 1) "Labels added: 2"
2) "Nodes created: 5"
3) "Properties set: 5"
4) "Relationships created: 3"
5) "Cached execution: 0"
6) "Query internal execution time: 1.920000 milliseconds"
您可以WHERE NOT
在查询时添加子句
MATCH (u:User)-[d:Deposit]->(t:Transaction)
WHERE NOT ((t)<-[:Withdrawal]-())
RETURN u.uid
应该只返回 uid 2 的用户
redis:6379> GRAPH.QUERY g "MATCH (u:User)-[d:Deposit]->(t:Transaction) WHERE NOT ((t)<-[:Withdrawal]-()) RETURN u.uid"
1) 1) "u.uid"
2) 1) 1) (integer) 2
3) 1) "Cached execution: 0"
2) "Query internal execution time: 0.816100 milliseconds"