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v4.0
    v4.0

    Belong to

    Expression, Operand

    in judges if a given value belongs to a set.

    Syntax:

    • Expression: <value> in <array>
    • Operand: see list below
    Name Type Specification Description
    value ATTR(string, number, time) / The value to be judged
    array ARRAY / Targeted set

    Abbreviated form: when judging whether the UUID of the current node/edge belongs to an array of integers or an array of UUIDs of a node/edge array alias, the filter can be abbreviated as the array of integers or the node/edge array alias without the curly bracket

    Standard Form Abbreviated Form Specification
    ({ _uuid in [1,2,3]}) ([1,2,3])
    ({ _uuid in intArray}) (intArray) intArray is the alias of the set

    Constant

    Example: judge if 2 belongs to [1,2,3]

    return 2 in [1,2,3]
    

    Function

    Example: judge if 2 belongs to [1,2,3]

    uncollect [1,2,3] as n
    return 2 in collect(n)
    

    Alias

    Example: find 10 nodes whose levels belong to [1,2,3]

    find().nodes() as n
    where n.level in [1, 2, 3]
    limit 10
    return n{*}
    

    Property

    Example: find 10 cards or customers

    find().nodes({@ in ["card","customer"]}) as n
    limit 10
    return n{*}
    

    Example: find 10 nodes whose levels belong to [1,2,3]

    find().nodes({level in [1, 2, 3]}) as n
    limit 10
    return n{*}
    

    UUID (Abbreviated)

    Example: find 1-hop neighbors of Node 1 (UUID is 1, etc), Node 2, and Node 3, then find 1-hop neighbors of these neighbors, return deduplicated results

    khop().n([1,2,3]).e().n() as n1
    with collect(n1) as n2
    khop().n(n2).e().n() as n3
    return distinct(n3)
    
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