E621

For the complete documentation index optimized for AI agents, see llms.txt.

Invalid Boolean Comparison

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

N::User {
    name: String,
}

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