First, welcome to SQL! You’re going to like this. Upgrading from PostgreSQL is real work, and depending on your old PostgreSQL, that process can vary widely in complexity. You’re going to love the ...

PostgreSQL subqueries allow one SQL query to run inside another, making it possible to solve filtering, aggregation, comparison, and table based problems without writing separate queries. The lesson ...

A newly disclosed PostgreSQL vulnerability, tracked as CVE-2026-6471 and nicknamed PostGREShell, could allow attackers with low-level replication access to execute arbitrary code on database servers.

PostgreSQL has released updates to address a security flaw that allows an account with the REPLICATION attribute to run arbitrary code as the operating-system user running the database server. The ...

PostgreSQL CASE statements make it possible to add conditional logic directly into SQL queries, working similarly to IF ELSE statements in programming languages and spreadsheet tools. This tutorial ...

CVE-2026-14669 is a Heap-based Buffer Overflow vulnerability in PostgreSQL, one of the most widely used database technologies worldwide. The vulnerability is located in PostgreSQL’s built-in to_char() ...

Imagine this scenario: Your team decides to migrate a core application from an existing commercial database like Oracle or SQL Server to open source PostgreSQL or a fully managed service such as ...

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Indirect prompts hidden in a repository can lead to Claude Code spawning a reverse shell on the developer’s machine. Attackers can take over developers’ systems by hiding indirect prompts in ...