-- Upgrade the database from commit 3d70a460 to 0983abac.
--
-- NOTE: This upgrade must be applied to every schema in the database.
-- NOTE: Each application starts a transaction, which must be committed
-- or rolled back.
--
-- This:
--
--  * makes the primary key on planned_lines deferrable; and
--  * changes the planned_lines trigger from statement to row.
--  
-- To apply, run as the dougal user, for every schema in the database:
--
-- psql <<EOF
-- SET search_path TO survey_*,public;
-- \i $THIS_FILE
-- COMMIT;
-- EOF
--
-- NOTE: It can be applied multiple times without ill effect.


BEGIN;

ALTER TABLE planned_lines DROP CONSTRAINT planned_lines_pkey;
ALTER TABLE planned_lines ADD CONSTRAINT planned_lines_pkey PRIMARY KEY (sequence) DEFERRABLE;

DROP TRIGGER planned_lines_tg ON planned_lines;
CREATE TRIGGER planned_lines_tg AFTER INSERT OR DELETE OR UPDATE ON planned_lines FOR EACH ROW EXECUTE FUNCTION public.notify('planned_lines');

--
--NOTE Run `COMMIT;` now if all went well
--
