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v4.0
    v4.0

    Equal

    Expression, Operand

    == judges whether the given value equals another value.

    Syntax:

    • Expression: <value1> == <value2>
    • Operand: ATTR (number, time, string)
    • Abbreviated form: when judging whether the UUID of the current node/edge equals an integer or the UUID of a certain node/edge alias, the filter can be abbreviated as the integer or the node/edge alias without the curly bracket
    Standard Form Abbreviated Form Description
    ({ _uuid == 10}) (10)
    ({ _uuid == num}) (num) num is the alias of an integer
    ({ _uuid == n._uuid}) (n) n is the alias of a node
    ({ _uuid == e._uuid}) (e) e is the alias of an edge

    Constant

    Example: judge whether "Ultipa" equals "Ultipa"

    return "Ultipa" == "U1tipa"
    

    Function

    Example: judge whether PI equals 3

    return pi() == 3
    

    Alias

    Example: find nodes whose levels are 1, return 10 nodes with all properties

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

    Property

    Example: Find information of 10 bank cards

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

    Example: Find 10 nodes at level 1

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

    Example: Find 10 bank cards at level 1

    find().nodes({@card.level == 1})
    return nodes{*} limit 10
    

    UUID (Abbreviated)

    Example: Find 1-hop neighbors of node whose UUID is 1, then find 1-hop neighbors of these neighbors, return deduplicated results

    khop().src({_uuid == 1}).depth(1) as neighbor1
    khop().src({_uuid == neighbor1._uuid}).depth(1) as neighbor2
    return distinct(neighbor2)
    
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