我該如何使用subselect或LEFT join進行Delete查詢

Question

我試圖從任務表中刪除任務，其中任務ID例如為100，而刪除用戶或其團隊成員在用戶表中分配了較小user_role的任務創建的任務WHERE

我想知道這樣的事情是否會發揮作用，或者實現此目的的正確方法是什么？

DELETE FROM tasks t LEFT JOIN users u ON u.user_id = 1 WHERE task_id = 677 
AND createdby 
IN((SELECT u1.user_id FROM users u1 WHERE u1.user_team = u.user_team 
AND taskrspnsble 
IN((SELECT u2.user_id FROM users u2 WHERE u2.user_role <= u.user_role))
))

Answer 1

我認為我的邏輯解釋得很清楚？ 我只是想通了。 這里是正確答案！

 DELETE FROM tasks 

WHERE task_id = 1 
AND createdby IN(
                (SELECT u1.user_id FROM users u1 WHERE u1.user_team 
                 IN
                 (SELECT u2.user_team FROM users u2 WHERE u2.user_role <= (SELECT u3.user_id FROM users u3 WHERE u3.user_id = 1)
                )
                ))