AWS AppSync がアツい！ RDS Data API を使って GraphQL API を爆速で作ってみた - Qiita

CREATE TABLE conversations ( id SERIAL PRIMARY KEY, name VARCHAR(255) NOT NULL, created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP ); CREATE TABLE messages ( id UUID PRIMARY KEY, conversation_id INT NOT NULL, sub UUID NOT NULL, body TEXT NOT NULL, created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP, FOREIGN KEY (conversation_id) REFERENCES conversations(id) ); CREATE TABLE con