We want to travel between four cities presented in the table
destination starting from Warsaw. We have another table called
ticket which lists all possible flying connections for us. Your task is to find the path which will be cheapest in terms of the total tickets cost. List all paths starting in Warsaw which go through all four cities. Order the paths by descending
In your answer, provide the following columns:
path – city names separated by
last_id – ID of the last city,
total_cost – total cost of tickets,
count_places – the number of places visited, should equal 4.