sql make 2更新查詢1

我有兩個更新查詢，我想使他們中的一個，但我不知道如何？我已經通過一些其他的例子在Stack Overflow上看過，但我無法讓它工作。sql make 2更新查詢1

你能幫我嗎？

查詢1：

UPDATE exercise_list SET ex1 = ex2，ex2 = ex3，ex4 = NULL WHERE day_ID = 1 AND user_ID = 4

查詢2：

UPDATE training_results SET ex1 = ex2，ex2 = ex3，ex4 = NULL WHERE day_ID = 1 AND user_ID = 4

UPDATE：感謝所有的awnsers！我已經接受了第一awnser

來源

2016-07-30 Sam van beastlo

[MySQL和更新多個表用一個查詢]（可能的重複http://stackoverflow.com/questions/4361774/mysql-update-multiple-tables-with-one - 查詢） –

有實現這一目標的方式有兩種：

使用單一mySqlQuery通話，只需按以下方式調用mySqlQuery函數：

mySqlQuery(UPDATE exercise_list SET ex1= ex2, ex2= ex3,ex4 = NULL WHERE 
day_ID= 1 AND user_ID= 4; 
UPDATE training_results SET ex1= ex2, ex2= ex3,ex4 = NULL WHERE 
day_ID= 1 AND user_ID= 4;)

方法2：

UPDATE exercise_list e_l ,training_results t_r SET 
e_l.ex1=e_l.ex2, e_l.ex2=e_l.ex3,e_l.ex4=NULL, 
t_r.ex1=t_r.ex2, t_r.ex2=t_r.ex3,t_r.ex4=NULL 
WHERE e_l.day_ID = 1 AND e_l.user_ID = 4 AND 
t_r.day_ID = 1 AND t_r.user_ID = 4;

希望它能幫助。

來源

2016-07-30 19:26:18

謝謝你的工作！我已經使用你的第二種方法。 –

可能是內部連接的兩個表

UPDATE exercise_list as a 
INNER JOIN training_results as b ON (a.day_ID = b.day_ID AND a.user_ID = b.user_ID) 
SET ex1= ex2, 
    ex2= ex3, 
    ex4 = NULL 
WHERE a.user_ID=4 
AND a.day_ID = 1

來源

2016-07-30 19:15:03 scaisEdge

UPDATE A 
SET A.ex1 = A.ex2 
, B.ex1 = B.ex2 
, A.ex2 = A.ex3 
, B.ex2 = B.ex3 
, A.ex4 = NULL 
, B.ex4 = NULL 
FROM exercise_list A 
JOIN training results B on A.ID = B.ID 
WHERE A.day_id = 1 and A.user_id = 4

來源

2016-07-30 19:19:42

這大概：

UPDATE exercise_list as el, training_results as tr SET 
el.ex1=el.ex2,el.ex2=el.ex3, el.ex4=NULL, tr.ex1=tr.ex2, tr.ex2=tr.ex3, tr.ex4=NULL 
WHERE el.day_ID = 1 AND el.user_ID = 4 AND tr.day_ID = 1 AND tr.user_ID = 4;

來源

2016-07-30 19:27:00

sql make 2更新查詢1

回答

相關問題