I have been trying to check if a result query is empty or not, I have researched for a while now. The code below shows the query that I'm making and the two ways that I checked if it's empty or not.

The problem is only one block is executed and the other is not executed even if it's supposed to be executed.

db.each(`SELECT category FROM categories WHERE category = ?`, [category], (err, res) => {
        
    if (res != {}) {
        console.log("Not Empty")
    }else{
        console.log(" Empty")
    }
}

On the above, if the res returns something it executes the if statement, otherwise the else is not executed.

I have also tried using Objects.keys(res).lenght > 0, but still nothing.

can you please help me understand this better I'm new to node JS.