PostgreSQL Foundations·Practice drills 6

Drill 13: Real project — Transactions, locking and roles

Connect this example to a real project you could build.

Intermediate 5 min read Lesson 140 of 300 Challenge included
What you will be able to do
  • Connect this example to a real project you could build.

Practice task

Connect this example to a real project you could build.

transaction.sqlSQL
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;
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Lesson 140 of 300 · 0% of course