Drill 22: Recall — Transactions, locking and roles
Close the lesson and reproduce the example from memory.
What you will be able to do
- Close the lesson and reproduce the example from memory.
Practice task
Close the lesson and reproduce the example from memory.
begin;
update courses set published = true where slug = 'postgresql';
insert into audit_events (action, object_id)
values ('course.published', 'postgresql');
commit;
create role app_reader nologin;
grant select on courses, lessons to app_reader;
alter table lesson_progress enable row level security;Your turn
EasyWrite your answer
Close the lesson and reproduce the example from memory.
TEXT · starter
Your answer…Study tools
Make it yours.
Keep a private note for this lesson, then turn the key ideas into flashcards you can revisit.
Sign in to save notes and flashcards.Both are private to your account and stay with your progress.
Sign inFinished reading?
Lock in what you just learned.
0%
Mark this lesson complete to save your place and move one step closer to the certificate.