如何在OrientDB中創建頂點並創建頂點

我試圖在Purchases類中創建一個頂點以及其與用戶類頂點的鏈接。下面的例子可以幫助你理解我想要達到的目標。如何在OrientDB中創建頂點並創建頂點

Create Edge PurchasedCarts 
    FROM 
    (CREATE VERTEX Purchases SET guid = "44b4dab7-744a-4f13-ae55-3a563e327de9", accountId = '240059', amount = 44, orderNumber = "1496890", totalItems = 2) 
    TO 
    (Select @rid from Users)

上面的命令產生這個錯誤

Error parsing query: 
Create Edge PurchasedCarts   FROM   (CREATE VERTEX Purchases SET guid = "44b4dab7-744a-4f13-ae55-3a563e327de9", accountId = '240059', amount = 44, orderNumber = "1496890", totalItems = 2)   TO   (Select @rid from Users) 
    ^
Encountered " &lt;CREATE&gt; "Create "" at line 1, column 1. 
Was expecting one of: 
    &lt;SELECT&gt; ... 
    &lt;TRAVERSE&gt; ... 
    &lt;MATCH&gt; ... 
    &lt;INSERT&gt; ... 
    &lt;RETURN&gt; ... 
    &lt;PROFILE&gt; ... 
    &lt;FIND&gt; ... 
    &lt;REBUILD&gt; ... 
    &lt;OPTIMIZE&gt; ... 
    &lt;GRANT&gt; ... 
    &lt;REVOKE&gt; ... 
    &lt;BEGIN&gt; ... 
    &lt;COMMIT&gt; ... 
    &lt;ROLLBACK&gt; ... 
    &lt;IF&gt; ... 
    &lt;SLEEP&gt; ... 
    &lt;CONSOLE&gt; ... 

    DB name="*****"

請幫我說或者你可以建議一些其他更好的方法，我將非常感激。

來源

2016-12-23 Arham Ali Qureshi

我不認爲你可以做到這一點。您可以使用[批處理]（http://orientdb.com/docs/2.2/SQL-batch.html） –

CREATE VERTEX語句不支持，但你可以在除了與UNSAFE關鍵字使用INSERT INTO：

insert into PurchasedCarts set out=(insert into Purchases SET guid = "44b4dab7-744a-4f13-ae55-3a563e327de9", accountId = '240059', amount = 44, orderNumber = "1496890", totalItems = 2), in=(select from Users) unsafe

關於目的地的選擇使用select from Users代替select @rid from Users

來源

2016-12-28 16:21:12

避免@rid有什麼好處？ –

如何在OrientDB中創建頂點並創建頂點

回答

相關問題