如何在OrientDB中创建顶点并创建顶点

我试图在Purchases类中创建一个顶点以及其与用户类顶点的链接。下面的例子可以帮助你理解我想要达到的目标。如何在OrientDB中创建顶点并创建顶点

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)

上面的命令产生这个错误

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="*****"

请帮我说或者你可以建议一些其他更好的方法，我将非常感激。

来源

2016-12-23 Arham Ali Qureshi

我不认为你可以做到这一点。您可以使用[批处理]（http://orientdb.com/docs/2.2/SQL-batch.html） –

CREATE VERTEX语句不支持，但你可以在除了与UNSAFE关键字使用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

关于目的地的选择使用select from Users代替select @rid from Users

来源

2016-12-28 16:21:12

避免@rid有什么好处？ –

如何在OrientDB中创建顶点并创建顶点

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