CREATE DEFINER=`root`@`%` PROCEDURE `createMenuByrole`()
BEGIN
    DECLARE done INT default false;
    DECLARE    rid1 INT default 0;
    DECLARE total INT DEFAULT 0;
    DECLARE
        cur CURSOR FOR SELECT    rid     FROM ut_role WHERE    type = 1;
    DECLARE    CONTINUE HANDLER FOR NOT FOUND     SET done 
 
= true;# 開啟定義的遊標
    OPEN cur;# 獲取下一行資料
    FETCH next from  cur INTO rid1;# 遍歷處理
    WHILE    not done DO
            SET total = total + 1;# 獲取下一行資料
            insert into abc(rid,mid,PERMISSION_ACTION)
            select rid1,mid,PERMISSION_ACTION from ut_permission_role where rid=396;
        #FETCH  cur INTO rid1;
        fetch next 
 
from cur into rid1;
    END WHILE;# 關閉釋放遊標
    CLOSE cur;
     SELECT
        total;

END

小記：

1.宣告變數時，要帶著預設值，否則預設為null，一不留神後面判斷時容易寫錯。

2.FETCH into 語句 = fetch next from 語句。

3.在while之前和內部都要新增fetch語句。