mysql - 每 5 次插入更改一些值(MySQL 存储过程)

Question

目标

每次 5 插入时，将 CATEGORYID 增加 1，直到 WHILE 完成。

场景

BEGIN
    DECLARE MaxAnnounces INT UNSIGNED DEFAULT 5;
    DECLARE Counter INT UNSIGNED DEFAULT 1;
    DECLARE NewWeek INT UNSIGNED DEFAULT 
            (SELECT WEEKID FROM announces_empire ORDER BY WEEKID DESC LIMIT 1);

    START TRANSACTION;
    WHILE Counter < MaxAnnounces DO
        INSERT INTO announces 
        (NAME, CAPTION, DESCRIPTION, IMAGEURL, LINK, CATEGORYID, WEEKID, YEARID)
        VALUES 
            ("Hello!", 
             "Click here.",
             "Can you tell me your name?",
             "example.com/img.jpg",
             "google.com",
             -- HERE I WANT TO INCREASE BY 1 EACH 5 INSERTS --
             40,
             2013);
        SET Counter = Counter + 1;
    END WHILE;
    COMMIT;
END

问题

我不知道语法。

问题亮点

而不是 -- 这里我想每 5 个插入增加 1 -- 我试图以这种方式做一些事情:

IF(Counter % 5, x + 1, 1),

其中 x 是我尚 undefined variable 。

Guilherme，你为什么不能使用这个 IF？会发生什么？这样做插入的值总是 1。

谁能给我一盏灯？

Answer 1

将使用以下工作:

CAST((Counter / 5) AS UNSIGNED)

或

FLOOR(Counter / 5)

或

FORMAT((Counter / 5),0)

它看起来像下面这样:

VALUES 
  ("Hello!", 
  "Click here.",
  "Can you tell me your name?",
  "example.com/img.jpg",
  "google.com",
  CAST((Counter / 5) AS UNSIGNED),
  40,
  2013);