Nevertheless, using the AS keyword is always a good practice. SELECT A.emp_name AS "Employee" /* Alias using AS keyword */ B.emp_name AS "Supervisor" FROM employee A, employee B /* Alias without AS keyword */ WHERE A.emp_sup = B.emp_id; Write an SQL statement to select all ...
and you may choose from a wide range of SQL courses to build a solid foundation. As we constantly say, you need to practice SQL, and a practice set of SQL questions gives you plenty of possibilities to do so. Even if you are now a beginner, you can become a SQL specialist in the ...
The use of comparison operators like <,> or = can be done in a subquery. These kinds ofSQL Interview Questionsare a bit difficult to understand and answer accordingly. There are a lot ofSQL Interview Questionsapart from this, which the candidates must practice qualifying for the interview. Fo...
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Write a SQL query using UNION ALL (not UNION) that uses the WHERE clause to eliminate duplicates. Why might you want to do this? View answer You can avoid duplicates using UNION ALL and still run much faster than UNION DISTINCT (which is actually same as UNION) by running a query like...
Finally, the fact that these courses can be taken totally online means that you can practice for your interview with InterviewBit no matter where you are. You could be sipping margaritas by the beach while taking a mock interview with one of your peers or while going through the course mater...
Practice SQL Interview Questions & Data Science Interview Questions asked by FAANG. Made by Nick Singh, Best-Selling Author of Ace the Data Science Interview.
Bit Shifting A bit shift moves each digit in a set of bits left or right. The last bit in the direction of the s… Integer Overflow When you create an integer variable, your computer allocates 64 bits for storing it. What if your n… Practice The Stolen Breakfast Drone In a...
Practice data science interview questions asked in actual interviews from top companies. Challenges Test your wit against other users and see how your skills compare. Takehomes Jumpstart your projects in a step-by-step fashion through takehomes from top tech companies. ...
In this tutorial, we have provided the most common Coding Interview Questions & Answers with Program Logic & Code Examples for you to practice programming: We are all aware that answering the most basic coding or programming interview questions determines how we perform in an interview. The interv...