MYSQL加入查詢沒有刪除

Question

我想通過id得到下面的查詢刪除所有的行，但查詢運行正常，但它沒有執行 - 沒有錯誤或行影響。我用tripple檢查了表格中的所有顏色名稱，並且它們是正確的。

MYSQL：

DELETE c FROM campaigns c 
JOIN campaignsFroms f ON f.campaign_id = c.id 
JOIN campaignsRaw r ON r.campaignId = c.id 
JOIN campaignsSubjects s ON s.campaign_id = c.id 
WHERE c.id = 1582 

Answer 1

我不知道，如果你想這樣的：

DELETE c, f, r, s 
FROM campaigns c LEFT JOIN 
    campaignsFroms f 
    ON f.campaign_id = c.id LEFT JOIN 
    campaignsRaw r 
    ON r.campaignId = c.id LEFT JOIN 
    campaignsSubjects s 
    ON s.campaign_id = c.id 
WHERE c.id = 1582; 

這將從所有連接到廣告活動的表中刪除記錄。 LEFT JOIN是爲了確保行不會被連接所考慮。