PostgreSQL Internals

“In the world of PostgreSQL performance optimization, precise statistics and accurate cost estimates are the guiding stars. Navigate your database to peak performance with finely tuned seek/scan costs and data statistics.” PostgreSQL Statistics and Cost […]

The terms “PCTFREE“, “PCTUSED“, and “Row Migration” are closely associated with the Oracle RDBMS. However,  PostgreSQL works differently. Although PostgreSQL lacks direct equivalents, it has similar concepts worth exploring. Let’s delve into these terms as […]

Troubleshooting PostgreSQL Performance Introduction: I/O operations significantly impact the performance of any database system, including PostgreSQL. Disk I/O falls into two main categories: random and sequential. Understanding their differences and how they affect PostgreSQL performance […]

Functional indexes in PostgreSQL are a powerful feature that allows you to create an index on the result of a function or expression applied to one or more columns of a table. This feature provides […]

Cardinality in PostgreSQL and Its Impact on Query Performance In PostgreSQL, cardinality refers to the estimated number of distinct values in a column or the estimated number of rows returned by a query. Accurate cardinality […]

  Introduction The PostgreSQL CAST operator is a versatile tool that plays a pivotal role in data type conversion and manipulation. Specifically, it allows developers and database administrators to explicitly transform data from one data […]

  Introduction Optimizing database performance is crucial for efficient application functioning, and one of the key strategies to achieve this in PostgreSQL is through intelligent indexing. Indexing involves creating data structures that allow the database […]