Powered By Advanced PL/SQL Interview Questions Let's now explore some advanced interview questions in case you are applying for a more senior role that requires more experience. 10. What are the methods of optimizing performance in PL/SQL? Minimizing context switches between SQL and PL/SQL is ...
Database lock tell a transaction, if the data item in questions is currently being used by other transactions. SQL INTERVIEW QUESTIONS AND ANSWERS 10 | P a g e What are the type of locks ? Shared Lock When a shared lock is applied on data item, other transactions can only read the ite...
WHERE t1.mgrid = t2.empid Here's an advanced query using a LEFT OUTER JOIN that even returns the employees without managers (super bosses) SELECT t1.empname [Employee], COALESCE(t2.empname, 'No manager') [Manager] FROM emp t1 LEFT OUTER JOIN emp t2 ON t1.mgrid = t2.empidCopyright...
25 Advanced SQL Interview Questions for Data Scientists - Oct 18, 2022. Check out this collection of advanced SQL interview questions with answers. SQL How to Get Up and Running with SQL – A List of Free Learning Resources- Oct 7, 2022. ...
preparing for a challenging interview. SQL is a foundational technology for database management, so employers test candidates on various concepts ranging from basic to advanced-level queries. This blog covers common SQL interview questions and their answers to help you succeed in your next interview....
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Book Features: SQL Server Interview Questions and Answers Comprehensive Coverage: From SQL Server basics to advanced topics like database tuning, replication, and high availability. Real-World Scenarios: The questions and answers are based on actual SQL Server interview experiences, offering practical in...
Become a data engineer through advanced Python learning Start Learning for Free Author I create articles that simplify data science and analytics, making them easy to understand and accessible. Frequently Asked SQL Questions What is the purpose of using UPDATE with JOIN in SQL?
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Interview Questions to Hire SQL Developers Basics and Advanced SQL Concepts When interviewing SQL developers, it’s important to cover both basic and advanced SQL concepts. Start with foundational questions to assess their understanding of data types, SQL syntax, and querying methods. Then, delve ...