1 Essential Oracle SQL Interview Question *

Submit an interview questionSubmit a question
Looking for experts? Check out Toptal’s Oracle SQL developers.
question badge

What is wrong with the below statement?

select employee_id emp, last_name emp_name, hire_date date 
from employees;
View the answer →Hide answer
answer badge

date has been used as an alias to the hire_date column, but we cannot use any Oracle reserved keyword as an alias. If want to use it, we have to mention it in quotation marks:

select employee_id emp, last_name emp_name, hire_date "date" 
from employees;
* There is more to interviewing than tricky technical questions, so these are intended merely as a guide. Not every “A” candidate worth hiring will be able to answer them all, nor does answering them all guarantee an “A” candidate. At the end of the day, hiring remains an art, a science — and a lot of work.
Submit an interview question
Submitted questions and answers are subject to review and editing, and may or may not be selected for posting, at the sole discretion of Toptal, LLC.
All fields are required
Thanks for submitting your question.
Our editorial staff will review it shortly. Please note that submitted questions and answers are subject to review and editing, and may or may not be selected for posting, at the sole discretion of Toptal, LLC.
Looking for Oracle SQL experts? Check out Toptal’s Oracle SQL developers.
View full profile »
Dathan Guiley
United States
Dathan is a forward-thinking freelance CTO, software architect, developer, and leader with roots in effective software development. He has 25 years in the field and experience with in-house development and management work at top internet companies including Amazon, Netflix, Yahoo!, and Overstock. He has focused for the last eight years on consulting, development, and management for startups and challenging projects.
Oracle SQLSQLKotlinJavaCouchbaseFull-Stack DeveloperJavaScriptAngularJava ServletsCTOApache Struts 2AWSHibernate
Hire Dathan