DatabaseCursor

Advances to the next element and returns it, or nil if no next element exists. Once nil has been returned, all subsequent calls return nil.

let rows = try Row.fetchCursor(db, "SELECT ...") // DatabaseCursor<Row>
while let row = try rows.next() { // Row
    let id: Int64 = row.value(atIndex: 0)
    let name: String = row.value(atIndex: 1)
}