Exploring PostgreSQL's ALTER TABLE Command Implementation
Introduction
This article explores the internal implementation of the ALTER TABLE command in PostgreSQL, focusing on the ADD COLUMN subcommand. The analysis is based on PostgreSQL commit hash 21e3a8bc3544a1cfcff85933bc9c0664af32a8b8.
Usage Examples
Below are common usages of the ALTER TABLE command:
ALTER TABLE myt ADD col1 INT;
ALTER TABLE myt ...
Posted on Fri, 30 Oct 2026 16:06:20 +0000 by bigscanner