- 1. Table Transformation
- SELECT * FROM flights WHERE (SELECT code FROM airports WHERE elevation < 2000);
- Nested subqueries
- First get all the codes from airports table if its elevation is smaller than 2000
- Use this as a filter to query all columns of data from the flights table
- Don't forget the ; semicolon in the end
Thursday, January 12, 2017
Codecademy SQL Table Transformation Subqueries Walkthrough
After transitioning to machine learning, I had to learn it the hard way that it is now very competitive and difficult to get into graduate s...
This review is updated continuously throughout the program. Yay I just joined the Udacity Nanodegree for Digital Marketing! I am such an Uda...
In this downtown startup work space design the designers used fat boy bean bags and an extra wide step tiered staircase to create work space...
The bogus request from P2PU to hunt for HTML tags in real life has yielded a lot of good thoughts. My first impression was that this is stup...