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Rekha Iyengar
UX Design Techdegree Student 9,131 PointsWhat am I missing
SELECT last_name FROM phone_book WHERE phone IS NOT NULL;
4 Answers
Shayan Khan
9,842 PointsThis Worked for me:
SELECT * last_name FROM phone_book WHERE last_name IS NOT NULL;
Hope that helps out.
Sergey Podgornyy
20,660 PointsWhy do you select last_name, if you already selected all?
Shayan Khan
9,842 PointsI'm sorry, my mistake. It was supposed to be SELECT last_name FROM phone_book WHERE last_name IS NOT NULL. The question specifically asks us to only to retrieve the last name column and therefore, we need to write SELECT last_name FROM phone_book. And then write the condition to retrieve all the NON Null values in the last_name column which is WHERE last_name IS NOT NULL;. Hope that helps out!
Robert Darby
9,360 PointsNot sure what the question is but if its the one I think it is, its asking you to return everything WHERE phone IS NOT NULL not just last_name.
If that is the case it should be:
SELECT * FROM phone_book WHERE phone IS NOT NULL;
Sergey Podgornyy
20,660 PointsIt looks correct and should work properly
Rekha Iyengar
UX Design Techdegree Student 9,131 PointsThanks So much! =)
Rekha Iyengar
UX Design Techdegree Student 9,131 PointsRekha Iyengar
UX Design Techdegree Student 9,131 PointsSorry here is the question.
We're still using the phone_book, with the columns id, first_name, last_name and phone. Imagine we're implementing the autocomplete feature for a search box where you can start typing in someone's last name and suggestions will appear. Retrieve all non-NULL values from the last name column. Only retrieve the last_name column.