PostgreSQL

Introduction Efficiency in SQL queries is paramount for smooth database operations. This tutorial sheds light on performance issues associated with slow queries using JOIN and ORDER BY in PostgreSQL and how to optimize......

Introduction Working with PostgreSQL, a very common obstacle developers face is the Fatal: role does not exist error. This can be a blocker in both development and production environments. Understanding the causes and exploring the......

Introduction Encountering an authentication error with PostgreSQL can be a stress-inducing event, but there are several methodologies to troubleshoot and solve this issue. The error “Password authentication failed for user......

The Problem When working with relational databases such as PostgreSQL, the ‘column reference is ambiguous’ error is commonly encountered. This happens when a SQL query refers to a column name without sufficient context,......

Introduction Connecting to a PostgreSQL database server can sometimes result in connectivity issues. This guide explores several methods for troubleshooting and resolving common connection problems using the latest PostgreSQL features......

Overview Encountering a ‘Permission Denied’ error in PostgreSQL can bring your development to a halt. This error typically occurs due to insufficient privileges on a database or table, or inability to access a file on the......

Overview Encountering the ‘Database doesn’t exist’ error in PostgreSQL can be a stumbling block when developing a project. This error suggests that the application is trying to connect to a PostgreSQL database that......

Overview When working with databases, deadlocks are a classic problem that can lead to significant issues in multi-threaded or multi-process applications. A deadlock occurs when two or more transactions are waiting for each other to......

Overview When developing applications using PostgreSQL as your database system, encountering an ‘Out of Memory’ error can halt your progress and affect the performance and reliability of your application. This error......

Understanding and Fixing PostgreSQL Timeouts While working with PostgreSQL, you might encounter error messages signaling that a query has timed out. This error indicates that the execution time of a query has exceeded the configured......

Introduction When working with PostgreSQL, a common issue developers may encounter is the ‘Data Type Mismatch Error.’ This happens when there is a conflict between the expected data type and the actual data provided during......

Introduction Dealing with date and time formats in PostgreSQL is a common scenario for many developers. At times, you might encounter ‘invalid date/time format’ errors which can interrupt the workflow of your applications.......