Cascading

server/migrations/0002_posts_table.sql

@@ -4,7 +4,7 @@ CREATE TABLE IF NOT EXISTS posts (
     content TEXT NOT NULL,
     created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
     updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    FOREIGN KEY (user_id) REFERENCES users (id)
+    FOREIGN KEY (user_id) REFERENCES users (id) ON DELETE CASCADE
 );
 
 -- Create a function to set created_at and updated_at on INSERT

server/migrations/0005_engagements_table.sql

@@ -1,7 +1,7 @@
 CREATE TABLE IF NOT EXISTS engagements (
     user_id BIGINT NOT NULL,
     post_id BIGINT NOT NULL,
-    FOREIGN KEY (user_id) REFERENCES users (id),
-    FOREIGN KEY (post_id) REFERENCES posts (id),
+    FOREIGN KEY (user_id) REFERENCES users (id) ON DELETE CASCADE,
+    FOREIGN KEY (post_id) REFERENCES posts (id) ON DELETE CASCADE,
     PRIMARY KEY (user_id, post_id)
 );