CREATE TABLE wp_pha_acmessages (
        id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
        thread_key VARCHAR(64) NOT NULL,
        sender_id BIGINT UNSIGNED NOT NULL,
        receiver_id BIGINT UNSIGNED NOT NULL,
        message TEXT NOT NULL,
        product_id BIGINT UNSIGNED NULL,
        event_id BIGINT UNSIGNED NULL,
        is_deleted TINYINT(1) DEFAULT 0,
        edited_at DATETIME NULL,
        created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
        read_at DATETIME NULL,
        PRIMARY KEY  (id),
        KEY thread_key (thread_key),
        KEY receiver_id (receiver_id),
        KEY created_at (created_at)
    ) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_520_ci;aaww