CREATE TABLE IF NOT EXISTS `companies` (
    `id` INT(11) NOT NULL AUTO_INCREMENT,
    `name` VARCHAR(255) NOT NULL,
    `address` VARCHAR(255) DEFAULT NULL,
    `phone` VARCHAR(20) DEFAULT NULL,
    `email` VARCHAR(255) DEFAULT NULL,
    `created_at` DATETIME DEFAULT CURRENT_TIMESTAMP,
    `updated_at` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    PRIMARY KEY (`id`),
    UNIQUE KEY `name` (`name`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;