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v4.2
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    中文EN
    v4.2

      Find Nodes

      Statement find().nodes() can apply filters on nodes and return those that meet the requirement. This is very similar to table query in traditional database.

      Syntax:

      • Statement alias: supported (NODE)
      • Optional parameters:
      Parameter Type Specification Description Structure of Custom Alias
      limit() Int -1 or >=0 Number of results to return for each subquery, -1 means to return all results Not supported

      An alias nodes will be automatically defined by system when there is no manually defined alias at the end of the node query statement; in this case user cannot use nodes to define alias for other data in the subsequent UQL statement, otherwise error of duplicated name will be triggered.

      Unconditional

      Example: Find 10 nodes, return all node properties

      find().nodes() as n
      limit 10
      return n{*}
      

      ID

      Example: Find nodes whose ID equals CA001, return all node properties

      find().nodes({_id == "CA001"}) 
      return nodes{*}
      

      UUID

      Example: Find cards 1, 2 and 3, return all node properties

      find().nodes([1,2,3]) as n
      return n{*}
      

      Schema

      Example: Find 10 @card, return all node properties

      find().nodes({@card}) as n
      limit 10
      return n{*}
      

      Property

      Example: Find 10 nodes at level 1 and above, return all node properties

      find().nodes({level > 1}) as n
      limit 10
      return n{*}
      

      Schema & Property

      Example: Find 10 @card at level 1 and above, return all node properties

      find().nodes({@card.level > 1}) as n
      limit 10
      return n{*}
      

      Default Statement Alias

      Example: Find 10 nodes, return all node properties

      find().nodes()
      limit 10
      return nodes{*}
      
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