有兩個表

Mysql的UPDATE查詢我想運行此查詢：有兩個表

UPDATE up SET up.pts = uc.checkin_worth WHERE uc.email = up.email AND uc.company_id = up.company_id AND uc.email = '[email protected]' AND uc.company_id = '4' AND uc.qrcode = 'j'

不過，我得到一個錯誤，因爲我不知道如何在兩個表（UC及以上）相結合更新查詢。

誰能幫我解決這個問題？

感謝，

來源

2012-12-27 Sohel Mansuri

磨片n您有任何問題，是非常有用的張貼在所治療哪些方面的信息;在這種情況下，它會很高興地看到你的表的結構，看看有什麼可以用來加入他們 – Rubens

只需使用普通的JOIN語法：

UPDATE up JOIN uc ON uc.email = up.email AND uc.company_id = up.company_id 
SET up.pts = uc.checkin_worth 
WHERE uc.email = '[email protected]' AND uc.company_id = '4' AND uc.qrcode = 'j'

您也可以使用舊的逗號語法，這更類似於原始查詢：

UPDATE uc, up 
SET up.pts = uc.checkin_worth 
WHERE uc.email = up.email 
AND uc.company_id = up.company_id 
AND uc.email = '[email protected]' 
AND uc.company_id = '4' 
AND uc.qrcode = 'j'

來源

2012-12-27 02:09:53 AndreKR

我有我的名字列一個錯字，感謝您的幫助，雖然。我會盡我所能接受這個答案。 –

嘗試與此：

UPDATE up, uc 
SET up.pts = uc.checkin_worth, 
WHERE uc.email = up.email AND uc.company_id = up.company_id AND uc.email = '[email protected]' AND uc.company_id = '4' AND uc.qrcode = 'j'

來源

2012-12-27 02:10:12 Danilo

感謝您的幫助。 AndreKR擊敗你:) –

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