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...
Beginner PL/SQL Interview Questions In the initial interview phase, the interviewer can ask foundational questions to assess your knowledge of basic database and PL/SQL concepts. Try studying these questions and answer to prepare for the initial phase of the interview. 1. What is PL/SQL? PL/S...
We are going to discuss the most interviewer asked PostgreSQL interview questions for the acknowledgment of future aspirants in this niche. PostgreSQL is one of the most advanced, object-relational database management systems and open-source developed by PostgreSQL Global Development Group at Berkeley ...
and advanced analytics. Additionally, SQL Server supports integration with various data sources and tools, comprehensive BI and reporting services, and built-in support for machine learning and data analysis through R and Python integration. SQL Server also provides advanced security with encryption and ...
Frequently Asked SQL Interview Questions 1. What is a Database? Adatabase refers to a structured data collection that can be stored, managed, and retrieved from a remote or local computer system. Databases can become pretty complex and are built with a fixed design and modeling approach. ...
Oracle interview questions for freshers are the typical questions that are asked in all companies. Here are some of them: 13) What do you know about our company? This question is generally asked by the interviewer or hiring manager at the beginning of the conversation to know how much you ...
Below are the most frequently asked SAS interview questions, along with answers. This will give you the confidence to crack your SAS interview. These questions cover a wide range of topics, from simple theoretical concepts to tricky interview questions for both freshers and experienced SAS programmer...
The application which comes under the RDBMS category is MySQL, Oracle, Informix, IBM DB2 and Microsoft SQL Server. RDBMS Interview Questions we are mentioning below will help you to gain enough knowledge about RDBMS. Advantages RDBMS is in tabular form which is easy to understand Provide Security...
If you’re interested in joining the Meta team, you’ll face several rounds of challenging interviews. The Meta acceptance rate may be as low as 5%. Below, we’ll break down the Meta interview process and help you prepare for the most commonly asked questions for different roles. Check...
5. What are the differences between MySQL and SQL? You must know the differences between the two because this can be asked among the interview questions on MySQL. SQL stands for Standard Query Language. It is used to interface with databases such as MySQL. ...