create procedure update_article_htmlurl() // 建立乙個名字為update_article_htmlurl的儲存過程
begin //開始 declare var_num int; //定義變數var_num 型別為int
declare var_articleid int;//定義變數var_articleid 型別為int
declare var_htmlurl varchar(30);//定義變數var_htmlurl 型別為varchar
set var_num = 1;//設定初始值
set var_articleid = 547;//設定初始值
while var_articleid < 603 do //while迴圈var_articleid < 603的時候一直執行
update article set htmlurl = concat('/news/20090306/',var_num,'/file45.shmtl') where articleid = var_articleid;//執行更新操作 其中concat是合併字串的函式
set var_articleid = var_articleid + 1;//設定自增長
set var_num = var_num + 1;
end while; // 結束while
end; //結束
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