sql删除small bank company的雇员在works关系中的所有元组,下图加横线部分为主码delete from companywhere company-name = “small bank company”这样删除对吗?
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sql删除smallbankcompany的雇员在works关系中的所有元组,下图加横线部分为主码deletefromcompanywherecompany-name=“smallbankcompan
sql删除small bank company的雇员在works关系中的所有元组,下图加横线部分为主码delete from companywhere company-name = “small bank company”这样删除对吗?
sql删除small bank company的雇员在works关系中的所有元组,下图加横线部分为主码
delete from company
where company-name = “small bank company”
这样删除对吗?
sql删除small bank company的雇员在works关系中的所有元组,下图加横线部分为主码delete from companywhere company-name = “small bank company”这样删除对吗?
delete from works where company_name='small bank company'
delete from company where company_name = 'small bank company'
先执行第一句再执行第二句,否则可能会因为外键约束导致你删除失败的
sql删除small bank company的雇员在works关系中的所有元组,下图加横线部分为主码delete from companywhere company-name = “small bank company”这样删除对吗?
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