PostgreSQL

Introduction When working with databases, there are times when you need not just a random row but a random row selected based on certain weights. This is common in scenarios like creating a weighted lottery system or serving ads with......

Introduction Effective caching is critical in enhancing database performance by reducing the access time for frequently requested data. In this tutorial, we will explore several methods to implement caching in PostgreSQL, ensuring......

Introduction Locking a sequence in PostgreSQL is essential when you need to prevent concurrent modifications and ensure data consistency during a transaction. This tutorial will guide you through the process. Understanding Sequences......

Introduction In PostgreSQL, sequences are special schemas used for generating unique numeric identifiers. Sometimes it’s necessary to customize the control of a sequence’s ownership for more complex database designs. This......

Ensuring that your PostgreSQL database is regularly backed up is a critical aspect of database administration, particularly on widely used operating systems like Ubuntu. In this guide, we explore various automated backup solutions,......

Overview The REVERSE string function in PostgreSQL is quite a straightforward but incredibly useful string manipulation tool. This function, designed to reverse the order of the characters in a given string, has been a staple in SQL......

Overview PostgreSQL, an advanced open-source database, introduced support for array data types in version 7.3, released in November 2002. Since its introduction, PostgreSQL has seen a wealth of functions and operators that allow for......

Introduction Managing error logs is a crucial part of database administration that can help understand and resolve issues that arise within a PostgreSQL server. In this article, we will explore various methods to view error logs in......

Overview The SUBSTRING function is a powerful feature available for string manipulation in PostgreSQL databases. Its usefulness is recognized across various domains where data manipulation is an integral part of managing databases.......

Understanding the Error PostgreSQL is highly acclaimed for its robustness and reliability. However, on rare occasions, due to hardware failure, file system issues or abrupt termination of the database service, certain indexes might get......

Introduction When working with PostgreSQL, you might encounter an error stating ‘Relation ‘table_name’ does not exist’. This is a common error that can arise from various causes, such as a typo in the table......

Introduction The PostgreSQL SIMILAR TO operator is a powerful tool for pattern matching. It allows you to define a pattern using SQL standard’s regular expressions to match data within your database tables. Whether you’re a......