Comment Comment by kfool The issue is not performance. The issue is backward compatibility.ALTER TABLE performance will eventually improve. PostgreSQL 9.1 lifts-off the lock-up limitation.But what a performant ALTER TABLE will not improve is its intrusiveness to applications. When you change the schema you break the app.That's the problem.http://chronicdb.com/blogs/change_is_not_the_enemy parent kfool 14 years ago
ALTER TABLE performance will eventually improve. PostgreSQL 9.1 lifts-off the lock-up limitation.
But what a performant ALTER TABLE will not improve is its intrusiveness to applications. When you change the schema you break the app.
That's the problem.
http://chronicdb.com/blogs/change_is_not_the_enemy