sql queries asked in interview for experienced
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- Опубликовано: 28 май 2024
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sql queries asked in interview for experienced
For SQL interviews, especially for candidates with 3 years of experience, you should be ready to address a variety of technical scenarios. This includes explaining complex queries involving multiple joins, subqueries, and aggregations. You should understand how to find the second highest salary, handle database migration, and optimize slow queries. Knowledge of transaction isolation levels in SQL Server and the differences between UNION and UNION ALL is also crucial. Be prepared to discuss handling orphaned records, ensuring data integrity, and using various indexing strategies. Additionally, demonstrating an understanding of normalization, ACID properties, and common SQL functions like COUNT() and STUFF is essential.
A Technical SQL DBA Analyst interview typically focuses on assessing a candidate's expertise in database management, optimization, and troubleshooting. Key areas include understanding of SQL Server architecture, proficiency in SQL querying, and familiarity with backup and recovery procedures. Interviewees should also demonstrate knowledge of indexing, performance tuning, and data integrity. The ability to monitor and analyze system performance, manage user permissions, and handle large datasets is crucial. Additionally, knowledge of replication, clustering, and security best practices is often evaluated.
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