間違いはどこですか？

Question

私が間違っている場所を見つけるのを手伝ってください。

delimiter // 
CREATE FUNCTION `count_photos_in_gallery`(`tmp_gallery_id` INT(11) NOT NULL) RETURNS TINYINT(3) UNSIGNED 
BEGIN 
    DECLARE `tmp_count` TINYINT(3) UNSIGNED DEFAULT 0; 

    SELECT COUNT(`id`) INTO `tmp_count` FROM `photos_items` WHERE `gallery_id`=`tmp_gallery_id` LIMIT 1; 

    RETURN `tmp_count`; 
END// 

エラー：

1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'NOT NULL) RETURNS TINYINT(3) UNSIGNED BEGIN DECLARE tmp_count TINYINT(3) UNSI' at line 1

Answer 1

変更関数宣言、パラメータは、NOT NULLオプションはできません -

... 
CREATE FUNCTION `count_photos_in_gallery`(`tmp_gallery_id` INT(11)) 
    RETURNS TINYINT(3) UNSIGNED 
... 

Answer 2

この

DELIMITER // 
CREATE FUNCTION `count_photos_in_gallery`(`tmp_gallery_id` INT(11)) RETURNS TINYINT(3) UNSIGNED 
BEGIN 
    DECLARE `tmp_count` TINYINT(3) UNSIGNED DEFAULT 0; 

    SELECT COUNT(`id`) INTO `tmp_count` FROM `photos_items` WHERE `gallery_id`=`tmp_gallery_id` LIMIT 1; 

    RETURN `tmp_count`; 
END//