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v4.2
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v4.2

    max()

    Function max() finds and returns the maximum value of a data column. Only one row from the data stream will be kept after this function is called, and all the rest rows will be abandoned.

    Arguments:

    • Number, string or time <number | string | datetime | timestamp>, auto-abstraction: UUID of NODE/EDGE, row index (starting from 0) of PATH/TABLE, or the first element of ARRAY

    Returns:

    • Max value <number | string | datetime | timestamp>

    ATTR (Numeric value)

    Example: find the outbound 1-step paths from Card CA001, find the biggest amount of money transferred

    n({_id == "CA001"}).re({@transfer} as pay).n({@card})
    return max(pay.amount)
    

    ATTR (String)

    Example: find the outbound 1-step paths from Card CA001, find the biggest payee cards' ID

    n({_id == "CA001"}).re({@transfer}).n({@card} as payee)
    return max(payee._id)
    

    ATTR (time)

    Example: find the outbound 1-step paths from Card CA001, find the minimum value of transfer time

    n({_id == "CA001"}).re({@transfer} as pay).n({@card})
    return max(pay.time)
    
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