sql 更新特殊值时更新所有列

Posted 2021-05-13

create or replace teigger m_job
after update on salgradefor each row
declare
	cursor c_emp is 
	select * from emp
	where job = :new.job
	and sal< :new.losal for update;
	emp_rec c_emp%rowtype;
begin
	for emp_rec in c_emp loop
		update emp
		set sal = :new.losal
		where current of c_emp;
	end loop;
end	;