From 534a54ef758736c680274cab13ecef0512354d37 Mon Sep 17 00:00:00 2001
From: "D. Berge" <dberge@aaltronav.eu>
Date: Thu, 27 May 2021 20:14:29 +0200
Subject: [PATCH] Add database upgrade file 05

---
 .../upgrade05-3d70a460→0983abac.sql         | 33 +++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 etc/db/upgrades/upgrade05-3d70a460→0983abac.sql

diff --git a/etc/db/upgrades/upgrade05-3d70a460→0983abac.sql b/etc/db/upgrades/upgrade05-3d70a460→0983abac.sql
new file mode 100644
index 0000000..48b5b9e
--- /dev/null
+++ b/etc/db/upgrades/upgrade05-3d70a460→0983abac.sql
@@ -0,0 +1,33 @@
+-- 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
+--