lastinsertid - Last inserted _key in ArangoDB with AQL? -

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How do I get the last entered _key in ARDDDB with Aango query? I kept the item in the archive, the following element should have an _key build element, how do I get this _key?

Update on this question: Since ArangoDB 2.4 it is possible to retrieve it only with AOCAD query Document (or document).

The syntax for the single document INSERT was with the previous versions of Arogo DB 2.3: 

  INSERT {value: 1} IN archive   
 There is no way to recover a system entry ( _key ,  _rev  etc.) to insert the document. Since 2.4, the following is also possible:  
  INSERT {value: 1} result in the collection = new return result   
 Returns given above are specific attributes Document (including  value ) and system attributes in the above case.  
 It also works to insert multiple documents, e.g.   
   FOR I IN 1. 1.10 INSERT {value: i} Result in IN collection = New return result   
 To return all inserted documents

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