I plan to create an event trigger to detect schema change (e.g. add/remove a column, change column type), and write it into a separate table (e.g. EVENTS). Then a process periodically reads this table to send schema change notification. However, the event trigger (43.10.2. Triggers on Events) does not provide me info such as which table is altered, old and new schema. Am I missing something? Thanks very much for any hints.