时间: 2021-08-13 作者:daque
create trigger tri_emp
after insert on employees
for each row
insert into new values(:new.sno,:new.sname,:new.sex,:new.depart)
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create trigger tri_emp_delete
after delete on employees
for each row
delete from new where sno=:old.sno
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create trigger tri_emp_update
after update on employees
for each row
begin
delete from new where sno=:old.sno;
insert into new values(:new.sno,:new.sname,:new.sex,:new.depart);
end;
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提防;的运用,即使在begin和end子句中有多条语句的话,每条句子反面都该当有一个分号。