Re: [GENERAL] Concurrency-safe Replacing a Set of Rows (Without SERIALIZABLE)

> Given this limited example I'd probably choose to model notifications as an
> array on the user table.  Then just "UPDATE user SET notifications =
> array['a','b']::text WHERE user_id = 1;

I'm hesitant to ditch the first normal form just to get around this. Anyway,
there's actually extra data in the table that makes it hard to use an array:

CREATE TABLE notifications (
  user_id INT,
  type CHAR(1),
  threshold INT,
  some_options BOOLEAN,

  PRIMARY KEY (user_id, type)
);