20 PostgreSQL Inteview Questions and Answers For 1 -2 Years Experienced 2025 | MindMajix

Ace your PostgreSQL interview in 2025. This video covers frequently asked PostgreSQL interview questions and answers, perfect for 1-2 years of experienced candidates. We have covered key concepts, and practical examples to help you land your dream database job.
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🔘 How do I prepare for a PostgreSQL interview?
Focus on mastering core SQL concepts (queries, joins, indexes, transactions) and PostgreSQL-specific features (data types, functions, stored procedures), while also practicing common interview questions and preparing examples from your projects to showcase practical experience.
Timestamps:
0:01:19 Describe triggers
0:02:22 Explain multi-version concurrency control
0:03:06 What are the different logging mechanism available and their purpose
0:03:33 Explain the difference between inner join and left join with examples
0:05:23 Write a SQL query to find the total number of employees in each department
0:06:34 What are indexes and how do they improve query performance
0:07:39 Write a SQL query to update the salary of an employee with a specific id
0:08:55 Explain the use of Group By clause with an example
0:10:11 What are subqueries and how can they be used in PostgreSQL
0:10:49 Write a SQL query to find the second highest salary from the employees table
0:12:25 Write a SQL query to list all employees who joined last year
0:13:33 Write a SQL query to create a view that shows the average salary by department
0:14:49 Write a SQL query to find all employees whose names start with letter A
0:16:20 Write a SQL query to perform a full text search on a documents table
0:17:28 What are the common performance tuning techniques in PostgreSQL
0:18:04 Explain the difference between a view and a materialized view
0:19:12 What are stored procedures and how do you create one
0:19:55 What are functions and how can they be used to extend SQL functionality
0:20:33 Explain the concept of replication and its benefits for data availability
0:21:42 What are some best practices for designing and maintaining a PostgreSQL database
✅ About MindMajix's PostgreSQL Training:
PostgreSQL training program comprises a combination of basic theory, discussions over complex DBA Administration scenarios, and three Real-Time use cases and also includes the topics from both PostgreSQL Associate and Professional Certifications Exams. After completing the training, learners will continue to be plugged into MindMajix through the included job-search assistance and Mock Interviews.
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