使用存儲過程從數據庫中進行選擇？

Question

我試圖讓這樣一個存儲過程：

DELIMITER $$ 
DROP PROCEDURE IF EXISTS get_userStatUser $$ 
CREATE PROCEDURE get_UserStatUser 
(
IN userId INT, 
OUT Played INT, 
OUT Win INT, 
OUT Points INT 
) 
BEGIN 
SELECT played, win, points 
INTO Played, Win, Points 
FROM nf_users 
WHERE id = userId; 
END $$ 
DELIMITER ; 

我再嘗試從它那裏得到的數據是這樣的：

$sql = mysqli_query($connect,"CALL get_userStatUser()") or die("Query fail: " . mysqli_error()); 
$row = mysqli_fetch_array($sql); 

$played = $row['Played']; 
$win = $row['Win']; 
$points = $row['Points']; 

但有些事情是不對的。我是「新手入門程序」，看不到我出錯的地方？我得到「查詢失敗：」沒有任何錯誤？

任何幫助apreciated並在此先感謝:-)

Answer 1

存儲過程需要4個參數

IN userId INT, 
OUT Played INT, 
OUT Win INT, 
OUT Points INT 

鑑於你的PHP調用存儲過程的方式，你需要重新定義如下：

DELIMITER $$ 
DROP PROCEDURE IF EXISTS get_userStatUser $$ 
CREATE PROCEDURE get_UserStatUser 
(
IN userId INT 
) 
BEGIN 
SELECT played, win, points 
FROM nf_users 
WHERE id = userId; 
END $$ 
DELIMITER ; 

你的PHP

$given_userid = 372987; 
$sql = mysqli_query($connect,"CALL get_userStatUser($given_userid)") or die("Query fail: " . mysqli_error()); 
$row = mysqli_fetch_array($sql); 

$played = $row['played']; 
$win = $row['win']; 
$points = $row['points']; 

試一試！