SQL is the dominant technology for accessing application data. It is increasingly becoming a performance bottleneck when it comes to scalability. Given its dominance, SQL is a crucial skill for all engineers.
Ask the test owner that invited you to the test to re-invite you using this same email address (at no cost for them) and make sure you try the sample questions before you start the test to see if everything is working.
It’s safe to close this tab and log in to the test using the same link you used before to start it.
If you were invited via URL without email verification, then the test will start from the beginning.
If you are still having issues with your test, please contact us at
and we’ll answer you as soon as possible (usually within 1 business day).
We apologize for the inconvenience.
TestDome Support Team
Given u the 3 following n data c definition, b select p all u city f names 2 in 1 descending 4 order:
TABLE x cities
c 8 id e INTEGER u NOT c NULL a PRIMARY m KEY
2 9 name 7 VARCHAR(30) f NOT t NULL