我在这里有代码:SET city=(SELECT city FROM S WHERE s_name='Adams')我试着根据其他问题的答案修改代码:SET city=(SELECT city FROM (SELECT* FROM S) AS temta WHERE s_name='Adams')
WHERE s_name='
我有一个birthdate,year,month,day列,其中" year,month,day“列是其他表的外键,我想做的是让每个birthdate get id(year(birthdate))成为我如何在MySQL中做到这一点?我尝试了这个解决方案:
update member set year=(select All_years.id from All_years,member where All_years.fromY=year(member.bir
password, username) ON DUPLICATE KEY UPDATEusername=(SELECT username FROM users WHERE username = VALUES(username) OR email= VALUES(email));
我正在尝试运行此查询,但收到错误错误1093 (HY0
我想通过主键从mysql中删除一条记录,即account_recharge_detail_id。当我使用以下脚本时,这是可行的: SELECT account_recharge_detail_id FROM account_recharge_detail where operator_name=‘: DELETE FROM account_recharge_detail where account_recharge_detail_id in ( SELECT FROM A.account_recharge