CREATE TABLE shopping_carts (
    id VARCHAR(64) PRIMARY KEY DEFAULT uuid_generate_v4(),
    quantity INTEGER NOT NULL DEFAULT 1,
    user_id VARCHAR(64) NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    cart_id VARCHAR(64) NOT NULL,
    cart_class_name VARCHAR(64),
    cart_type VARCHAR(64),
    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
);