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Invalid Boolean Comparison

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Erroneous Code Example

This error occurs when you try to apply a boolean comparison operation to a type that doesn’t support it. In this example, the && operator is used on a non-boolean type. 
Query getUser(user1: ID, user2: ID) =>
    user1 <- N<User>(user1)
    user2 <- N<User>(user2)
    is_eq <- user1::EQ(user2)
    RETURN is_eq

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Solution

Ensure boolean operations are used on values that result in primitive types like booleans, numbers, or strings. 
Query getUser(user1: ID, user2: ID) =>
    user1_name <- N<User>(user1)::{name}
    user2_name <- N<User>(user2)::{name}
    is_eq <- user1_name::EQ(user2_name)
    RETURN is_eq