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PostgreSQL Query Hints: Influencing the Query Planner and Optimizer Barriers

Are you curious why PostgreSQL lacks query hints and how you can still influence execution plans? Discover alternative techniques to force join orders in PostgreSQL and optimize query performance. Why PostgreSQL avoids query hints? Dive […]

PostgreSQL Encryption-at-Rest: How to Implement It in Kubernetes

Implementing encryption-at-Rest for PostgreSQL in Kubernetes involves configuring encryption for the persistent storage where PostgreSQL data resides. Below is a step-by-step explanation of how to achieve this, along with a real-world example: apiVersion: apps/v1kind: Deploymentmetadata:name: […]

PostgreSQL Disaster Recovery Kubernetes: Simplifying Business Continuity

Introduction: In the digital age, businesses cannot afford to overlook the importance of disaster recovery. With increasing reliance on data, system outages or data loss can have catastrophic consequences, leading to significant disruptions and financial […]

PostgreSQL Isolation Levels: Building Optimal and Scalable Applications

Isolation levels in PostgreSQL play a crucial role in ensuring the consistency, performance, and scalability of your applications. By understanding and selecting the appropriate isolation level, you can develop optimal and scalable PostgreSQL-based applications. Let’s […]

PostgreSQL Statistics: How to Gather Them Only When Stale

In PostgreSQL, you can gather statistics only when they become stale by using the pg_stat_statements extension along with the track_activity_query_size configuration parameter. Follow these steps to achieve this: CREATE EXTENSION pg_stat_statements; 3. Query the pg_stat_statements […]

PostgreSQL SQL Plans: Why They Change for the Worse

In PostgreSQL, several reasons can cause SQL statement plans to worsen over time. These changes may lead to decreased query performance and unexpected behavior. Below are some common factors that contribute to deteriorating SQL statement […]

PostgreSQL Concurrent Statistics: How to Implement Concurrent Gathering

Concurrent statistics gathering in PostgreSQL allows the system to collect table and column statistics without blocking concurrent read and write operations. As a result, this feature ensures accurate and up-to-date statistics while minimizing the impact […]

PostgreSQL Bind-Aware Cursor Sharing: How to Force It in a Query

In PostgreSQL, you can force a query to use bind-aware cursor sharing by utilizing the CURSOR_SHARING parameter. By setting CURSOR_SHARING to ‘FORCE’, PostgreSQL will attempt to share cursors for similar queries with different literal values. […]

PostgreSQL Query Optimizer: Troubleshooting Unconsidered Hints

PostgreSQL’s query optimizer (or planner) creates optimal execution plans for SQL queries by evaluating multiple possible plans and selecting the fastest one. [^1] Understanding PostgreSQL’s Approach to Optimizer Hints PostgreSQL takes a deliberately cautious approach […]

How to have PostgreSQL execution plan with run-time?

PostgreSQL execution plan with run-time In PostgreSQL, you can obtain the execution plan with runtime information using the EXPLAIN (ANALYZE, VERBOSE) command. This command in particular, provides a detailed execution plan along with actual runtime […]

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