mysql - 从数据库中删除用户的所有记录

Question

我正在大学做一个小项目。我遇到一个问题，我想从特定的数据库中删除所有记录User。

我正在使用查询从数据库中获取所有记录。

SELECT s.UserName,p.Name,p.Father_Name,s.Email,p.DOB,p.Gender,p.Nationality,p.Domicile,p.CNIC,p.Mobile,p.Address, e.SSC_OM,E.SSC_TM,E.SSC_EB,e.HSSC_OM,e.HSSC_TM,e.HSSC_EB, d.Choices_1,d.Choices_2,d.Choices_3

FROM   Signup s
INNER JOIN Pers_D p ON p.UserName = s.UserName
INNER JOIN Edu_D e on e.UserName = p.UserName
INNER JOIN Dep_S d on d.UserName = e.UserName
WHERE  [d].UserName LIKE '%User_etc%'

但无法删除该user's记录。

我试过了 ：

DELETE * FROM Signup WHERE UserName LIKE '%User_etc%'

但是失败了。请帮助我，并提前感谢。

Answer 1

*从您的DELETE查询中删除：

DELETE FROM Signup WHERE UserName LIKE '%User_etc%'

Answer 2

删除*，query statement应该如下

DELETE FROM Signup WHERE UserName LIKE '%User_etc%'

Answer 3

只需从您的 DELETE 查询中删除 * 即可。

DELETE FROM Signup WHERE UserName LIKE '%User_etc%'

Answer 4

我相信您想在单个查询中从所有表中删除记录。然后查询将类似于：

DELETE s, p, e, d 
FROM   Signup s
JOIN Pers_D p ON p.UserName = s.UserName
JOIN Edu_D e ON e.UserName = p.UserName
JOIN Dep_S d ON d.UserName = e.UserName
WHERE  d.UserName LIKE '%User_etc%';

Answer 5

从您的查询中删除 *

DELETE FROM Signup WHERE UserName LIKE '%User_etc%'