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v4.3
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    中文EN
    v4.3

      LIMIT

      LIMIT keeps the first N rows in the alias, and discards the rest of rows.

      Syntax: LIMIT <number>
      Input:

      • <number>: The number of rows to keep, or keep all rows when set to -1

      For instance, keep the first 2 rows of path:

      find().nodes([1, 5]) as nodes
      n(nodes).e()[:2].n() as path
      limit 2
      return path
      

      Please note the difference between clause LIMIT and chain command parameter .limit(), that .limit() keeps the first 2 rows of each subquery of path, not the first 2 rows of the whole path:

      find().nodes([1, 5]) as nodes
      n(nodes).e()[:2].n().limit(2) as path
      return path
      

      Sample graph: (to be used for the following examples)

      Run below UQLs one by one in an empty graphset to create graph data:

      create().node_schema("student").node_schema("course")
      create().node_property(@*, "name").node_property(@student, "age", int32).node_property(@course, "credit", int32)
      insert().into(@student).nodes([{_id:"S001", _uuid:1, name:"Jason", age:25}, {_id:"S002", _uuid:2, name:"Lina", age:23}, {_id:"S003", _uuid:3, name:"Eric", age:24}, {_id:"S004", _uuid:4, name:"Emma", age:26}, {_id:"S005", _uuid:5, name:"Pepe", age:24}])
      insert().into(@course).nodes([{_id:"C001", _uuid:6, name:"French", credit:4}, {_id:"C002", _uuid:7, name:"Math", credit:5}])
      insert().into(@default).edges([{_uuid:1, _from_uuid:1, _to_uuid:6}, {_uuid:2, _from_uuid:2, _to_uuid:6}, {_uuid:3, _from_uuid:3, _to_uuid:6}, {_uuid:4, _from_uuid:2, _to_uuid:7}, {_uuid:5, _from_uuid:3, _to_uuid:7}, {_uuid:6, _from_uuid:4, _to_uuid:7}, {_uuid:7, _from_uuid:5, _to_uuid:7}])
      

      Common Usage

      Example: Find 3 nodes of @student that are eldest

      find().nodes({@student}) as n
      order by n.age desc
      limit 3
      return n.name
      

      Emma
      Jason
      Pepe
      
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