你可以分享你的視覺查詢計劃嗎?
只需查詢並在瀏覽器中以PROFILE
作爲前綴即可。
我認爲這是一個許多事情:
- 使用暗號參數不是字符串替換
- 嘗試合併只對具有約束(或指數)
- 如果你不這樣做單一性質需要合併使用MATCH,即如果數據已經存在!
- 如果您不需要唯一關係,請使用CREATE,即當您知道您只需將新節點連接到現有節點時。
是這樣的:
MATCH (group:VK_Group {id: {group_id} })
MERGE (post:VK_Wall_Post { id: {post_id}}) ON CREATE SET post.date={post_date}
CREATE UNIQUE (group)-[:Published]-(post)
FOREACH (track IN {tracks} |
MERGE (trackNode:VK_Track {id: track.id})
ON CREATE SET trackNode.title=track.title,
trackNode.duration=track.duration
MERGE (artist:Artist {name: track.artist})
MERGE (trackNode)<-[:Performed]-(artist)
MERGE (post)-[:Attached]->(trackNode)
)
或者能夠使用匹配的循環:
MATCH (group:VK_Group {id: {group_id} })
MERGE (post:VK_Wall_Post { id: {post_id}}) ON CREATE SET post.date={post_date}
CREATE UNIQUE (group)-[:Published]-(post)
UNWIND {tracks} as track
MERGE (trackNode:VK_Track {id: track.id})
ON CREATE SET trackNode.title=track.title,
trackNode.duration=track.duration
MERGE (artist:Artist {name: track.artist})
MERGE (trackNode)<-[:Performed]-(artist)
MERGE (post)-[:Attached]->(trackNode)
你能分享您所查詢的視覺查詢計劃?只需在配置文件 –
的前面加上前綴即可:所有活動索引和約束與:瀏覽器中的模式 –
真棒!謝謝,我的朋友!我發現了一些限制,現在我在本地機器上每分鐘創建大約3萬個節點,這是令人難以置信的!我很快就會在服務器上嘗試它,並會檢查它是如何發生的,但它會大大提高性能! – Jabher