From 9342a93783216fbb88035c4f3f8cae300dda8e00 Mon Sep 17 00:00:00 2001
From: ekzyis <ekzyis@ekzy.is>
Date: Tue, 4 Feb 2025 02:32:06 +0100
Subject: [PATCH] Use ON UPDATE CASCADE for foreign keys

---
 schema.sql | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/schema.sql b/schema.sql
index 2bce193..abe106e 100644
--- a/schema.sql
+++ b/schema.sql
@@ -7,7 +7,7 @@ CREATE TABLE host (
 CREATE TABLE host_uptime (
     id SERIAL PRIMARY KEY,
     created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    host_id INT NOT NULL REFERENCES host(id),
+    host_id INT NOT NULL REFERENCES host(id) ON UPDATE CASCADE,
     -- uptime in seconds
     uptime INT NOT NULL
 );
@@ -16,7 +16,7 @@ CREATE INDEX host_uptime_host_id_created_at_idx ON host_uptime(host_id, created_
 CREATE TABLE host_mem (
     id SERIAL PRIMARY KEY,
     created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    host_id INT NOT NULL REFERENCES host(id),
+    host_id INT NOT NULL REFERENCES host(id) ON UPDATE CASCADE,
     -- available memory in kB
     mem_avail INT NOT NULL
 );
@@ -25,7 +25,7 @@ CREATE INDEX host_mem_host_id_created_at_idx ON host_mem(host_id, created_at);
 CREATE TABLE host_disk (
     id SERIAL PRIMARY KEY,
     created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    host_id INT NOT NULL REFERENCES host(id),
+    host_id INT NOT NULL REFERENCES host(id) ON UPDATE CASCADE,
     -- free disk space in kB
     disk_free INT NOT NULL
 );
@@ -34,7 +34,7 @@ CREATE INDEX host_disk_host_id_created_at_idx ON host_disk(host_id, created_at);
 CREATE TABLE host_cpu (
     id SERIAL PRIMARY KEY,
     created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    host_id INT NOT NULL REFERENCES host(id),
+    host_id INT NOT NULL REFERENCES host(id) ON UPDATE CASCADE,
     -- cpu load for last minute
     cpu_load_1m FLOAT NOT NULL
 );