diff --git a/examples/realworld/schema/postgres.sql b/examples/realworld/schema/postgres.sql
index b297c982..004feaff 100644
--- a/examples/realworld/schema/postgres.sql
+++ b/examples/realworld/schema/postgres.sql
@@ -1,8 +1,5 @@
-DROP VIEW IF EXISTS profiles CASCADE ;
-DROP TABLE users, followers, articles, favorite_articles, tags, comments CASCADE ;
-
 CREATE TABLE IF NOT EXISTS users (
-    user_id INT NOT NULL GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+    user_id SERIAL PRIMARY KEY,
 
     email TEXT UNIQUE NOT NULL,
     password TEXT NOT NULL,
@@ -20,7 +17,7 @@ SELECT user_id, username, bio, image
 FROM users;
 
 CREATE TABLE IF NOT EXISTS articles (
-    article_id INT NOT NULL GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+    article_id SERIAL PRIMARY KEY,
     title TEXT UNIQUE NOT NULL,
     description TEXT NOT NULL,
     slug TEXT UNIQUE NOT NULL,
@@ -59,7 +56,7 @@ CREATE TABLE IF NOT EXISTS tags (
 );
 
 CREATE TABLE IF NOT EXISTS comments (
-    comment_id INT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+    comment_id SERIAL PRIMARY KEY,
     body TEXT NOT NULL,
 
     article_id INT NOT NULL REFERENCES articles (article_id) ON DELETE CASCADE,