specify foreign key on delete actions

migrations/2024-11-25-232658_init/up.sql

@@ -7,7 +7,7 @@ CREATE INDEX ON users (uid);
 
 CREATE TABLE IF NOT EXISTS csrf_tokens (
     id UUID NOT NULL PRIMARY KEY,
-    user_id UUID REFERENCES users(id),
+    user_id UUID REFERENCES users(id) ON DELETE CASCADE,
     created_at TIMESTAMPTZ NOT NULL
 );
 CREATE INDEX ON csrf_tokens (created_at);
@@ -18,9 +18,9 @@ CREATE TABLE teams (
 );
 
 CREATE TABLE team_memberships (
-    team_id UUID NOT NULL REFERENCES teams(id),
-    user_id UUID NOT NULL REFERENCES users(id),
     roles TEXT[] NOT NULL DEFAULT '{}',
+    team_id UUID NOT NULL REFERENCES teams(id) ON DELETE CASCADE,
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
     PRIMARY KEY (team_id, user_id)
 );
 CREATE INDEX ON team_memberships (team_id);
@@ -28,7 +28,7 @@ CREATE INDEX ON team_memberships (user_id);
 
 CREATE TABLE api_keys (
     id UUID NOT NULL PRIMARY KEY,
-    team_id UUID NOT NULL REFERENCES teams(id),
+    team_id UUID NOT NULL REFERENCES teams(id) ON DELETE CASCADE,
     created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
     last_used_at TIMESTAMPTZ
 );
@@ -44,15 +44,15 @@ CREATE INDEX ON projects(team_id);
 
 CREATE TABLE IF NOT EXISTS channels (
     id UUID NOT NULL PRIMARY KEY,
-    team_id UUID NOT NULL REFERENCES teams(id),
+    team_id UUID NOT NULL REFERENCES teams(id) ON DELETE CASCADE,
     name TEXT NOT NULL,
     enable_by_default BOOLEAN NOT NULL DEFAULT FALSE,
     backend_config JSONB NOT NULL DEFAULT '{}'::JSONB
 );
 
 CREATE TABLE IF NOT EXISTS channel_selections (
-    project_id UUID NOT NULL REFERENCES projects(id),
-    channel_id UUID NOT NULL REFERENCES channels(id),
+    project_id UUID NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
+    channel_id UUID NOT NULL REFERENCES channels(id) ON DELETE CASCADE,
     PRIMARY KEY (project_id, channel_id)
 );
 CREATE INDEX ON channel_selections (project_id);

migrations/2025-01-31-045014_messages/up.sql

@@ -1,6 +1,6 @@
 CREATE TABLE IF NOT EXISTS messages (
     id UUID PRIMARY KEY NOT NULL,
-    channel_id UUID NOT NULL REFERENCES channels (id),
+    channel_id UUID NOT NULL REFERENCES channels (id) ON DELETE RESTRICT,
     created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
     sent_at TIMESTAMPTZ,
     message TEXT NOT NULL