CREATE TABLE `visitors` (`id` integer PRIMARY KEY AUTOINCREMENT,`created_at` datetime);

CREATE TABLE `todos` (`id` integer PRIMARY KEY AUTOINCREMENT,`user_id` integer NOT NULL,`title` text,`completed` numeric NOT NULL DEFAULT false,`created_at` datetime,`updated_at` datetime);

CREATE INDEX `idx_todos_user_id` ON `todos`(`user_id`);