From the course: Complete Guide to SQL for Data Engineering: from Beginner to Advanced
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Understanding query performance - SQL Tutorial
From the course: Complete Guide to SQL for Data Engineering: from Beginner to Advanced
Understanding query performance
- [Instructor] Have you ever experienced the frustration of waiting for your favorite app to load or a website to respond? Just like the impatience they feel in the digital world, imagine standing in a line at coffee shop where each query is like placing an order. Today we are not just going to understand query performance. We are going to supercharge it, ensuring that your SQL queries moves at the speed of your favorite fast food drive-through. Assessing SQL query optimization in PostgreSQL is crucial for optimizing your database queries and ensure efficient data retrieval. Let's explore the essential steps to assess and enhance SQL query performance. The first step would be enable query execution statistics. In PostgreSQL, you can enable the collection of query execution statistics by setting the track_activities and track_counts parameters in postgresql.conf file. You can find the Postgres configuration file under the…
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