Change Password

Please enter the password.
Please enter the password. Between 8-64 characters. Not identical to your email address. Contain at least 3 of uppercase, lowercase, numbers, and special characters (such as @*&#).
Please enter the password.
Submit

Change Nickname

Current Nickname:
Submit

Certifications

Certificate Issued at Valid until Serial No. File
Serial No. Valid until File

Not having one? Apply now! >>>

Invoice

ProductName CreateTime ID Price File
ProductName CreateTime ID Price File
v4.0
Search
    中文EN
    v4.0

      collect() | Collection

      Parameters, value

      Collection operation can aggregate a column of nodes, edges, paths, property values or schemas into an array in the original order, as long as it is a column of elements, it can be converted into an array by collect().

      Syntax:

      • format: collect(<column>)
      • parameters: (see list below)
      • value: ARRAY
      Name Category Specification Description
      <column> NODE,EDGE,PATH,ATTR,ARRAY,TABLE / The column to be aggregated

      <column>'s value for each category of <column>:

      Category value
      NODE NODE's UUID in the column
      EDGE EDGE's UUID in the column
      PATH ROW INDEX(starting from 0)in the column
      ATTR ATTR's value in the column
      ARRAY ARRAY'S value in the column
      TABLE Value of the array transformed from the table in the column

      ATTR

      Example: find 10 nodes and collect their schema

      find().nodes([1,2,3,4,5,6,7,8,9,10]) as n
      return collect(n.@)
      

      NODE

      Example: find 10 @product nodes, collect their UUID

      find().nodes({@product}) as n
      limit 10
      return collect(n)
      

      EDGE

      Example: find 10 @transfer edges, collect their UUID

      find().edges({@transfer}) as e
      limit 10
      return collect(e)
      

      PATH

      Example: find 10 shortest paths from Card CA001 within 2 steps, list the paths by the destination card's balances by descending order, and collect the column number of the paths.

      n({_id == "CA001"}).e({@transfer})[2].n(as n).limit(10) as p
      order by n.balance desc
      return collect(p)
      

      Analysis: the column number of the paths in the stream starts from 0,

      ARRAY

      Example: find paths from Card CA001 within 3 steps, count the number of the nodes of each path, then collect these nodes

      n({_id == "CA001"}).e()[3].n() as p
      with pnodes(p) as a
      return collect(a)
      
      Please complete the following information to download this book
      *
      公司名称不能为空
      *
      公司邮箱必须填写
      *
      你的名字必须填写
      *
      你的电话必须填写
      *
      你的电话必须填写