错误代码如下: #(8) 把"邓维杰"同学的成绩全部删除. SELECT * FROM sc WHERE EXISTS(SELECT * FROM student WHERE student.sno=sc.sno AND student.sname='邓维杰'); DELETE FROM sc WHERE degree IN(SELECT degree FROM sc WHERE sno=(SELECT sno FROM student WHERE sname='邓维杰')); 报错:…

Mysql update in报错 解决方案: [Err] 1093 - You can't specify target table 'company_info' for update in FROM clause 意思是不能在同一语句中更新select出的同一张表元组的属性值 解决方法:将select出的结果通过中间表再select一遍即可. 错误sql: update company_info set email = 'ttt@163.com' ) 修改后可执行的sql: update c…

MySQL中执行sql语句错误 Error Code: 1093. You can't specify target table 'car' for update in FROM clause 2017年03月21日 11:32:46 回归心灵 阅读数:686   版权声明:本文为博主原创文章,未经博主允许不得转载. https://blog.csdn.net/u010657094/article/details/64439486 当执行以下sql语句时会出现 Error Code:1093 错…

不同于oracle和sqlserver,mysql并不支持在更新某个表的数据时又查询了它,而查询的数据又做了更新的条件,因此我们需要使用如下的语句绕过: , notice_code ) a) ; 本地测试是通过的,但是在上到测试环境的时候,发现还是会报如下错误: , notice_code ) a) ; - You can't specify target table 'teaching_department' for update in FROM clause 对比版本发现,本地是5.6.25…

[Err] 1093 - You can't specify target table 's' for update in FROM clause 执行SQL DELETE from book WHERE id IN( SELECT id FROM ( SELECT id,name FROM book WHERE name IN( SELECT name FROM book GROUP BY name HAVING count(name) > 1 ) ) t WHERE id NOT IN (…

目的:查询一张表的相同的两条数据,并删除一条数据. 分析 先查询出相同的数据,然后删除 查询相同的数据 SELECT a.id FROM account a GROUP BY a.username HAVING COUNT(a.username)>1: DELETE FROM account WHERE id = (SELECT a.id FROM account a GROUP BY a.username HAVING COUNT(a.username)>1) : 1093 - You ca…

sql语句(update/delete都会出现此问题) update x set available_material_id = null where id not in (select id from x where additional_info = 1); mistake 大致意思是,在同一语句中,不能先select出同一表中的某些值,再update这个表. You can't specify target table 'x' for update in FROM clause mysql…

错误的意思说,不能先select出同一表中的某些值,再update这个表(在同一语句中). 例如下面这个sql: delete from tbl where id in (        select max(id) from tbl a where EXISTS        (            select 1 from tbl b where a.tac=b.tac group by tac HAVING count(1)>1        )        group by tac…

UPDATE bpm_tksign_data WHERE actinstid ' AND nodeid = 'SignTask1' AND batch = ( SELECT max(a.batch) m FROM bpm_tksign_data a WHERE a.actinstid ' AND a.nodeid = 'SignTask1' ); 这种写法,mysql各个版本都不支持. UPDATE bpm_tksign_data WHERE actinstid ' AND nodeid = '…

出现这个问题的MYSQL的SQL语句形如: DELETE FROM xxxxa WHERE EXISTS (SELECT * FROM xxxx1 WHERE xxxxa.xxid=123) 解决方法,把结果放在一个临时表里: DELETE FROM xxxxa WHERE xxxxa.id IN (SELECT tmp.id FROM (SELECT * FROM xxxxaWHERE xxxxa.xxid=123)tmp);   但是oracle是可以的,说明mysql有待升级.…