diff --git a/lab.md b/lab.md new file mode 100644 index 0000000..36d6867 --- /dev/null +++ b/lab.md @@ -0,0 +1,22 @@ +#Lab - MySQL + +## Goal + +Find out how many flights go from NYC to Paris + +## Stretch Goals + +- Do this so that just the number appears as the result of only one SQL statement +- Which airlines travel from NYC to Paris? +- Find all the flights that leave NYC. Give me a list of how many go to each destination city. + +## Hints + +- The routes table has a column called `origin_id` and another called `destination_id`. These map to the `id` column in the airport table. +- You're going to have to use the airports table twice in the same SQL statement. In order to tell which airport is the `destination` and which is the `origin`, you're going to have to temporarily rename the airports table like so: + + ```sql + /* note that once you rename a table, you MUST refer to it by its new name */ + SELECT * FROM airports AS origin WHERE origin.city = 'New York'; + /* later on in the SQL statement, when dealing with the destination, you should do the same for airports AS destination */ + ```