-1
create or replace trigger BAND_T BEFORE insert or update OF average_song_time, number_of_songs on BAND
for each row
declare
average_song_time number;
number_of_songs number;
begin
if (:new.average_song_time * :new.number_of_songs > 100) ;
then
raise_application_error(error -2010'Play Time is too high');
end if;
end;
/
想要在Oracle2中將兩列相乘,當兩列的值達到一定數量時,我的觸發器將被觸發,只是想知道該代碼出錯的地方?觸發器在oracle2中相乘兩列
'declare'節未使用。和'raise_application_error(錯誤-2010'播放時間太高');' '應該是'raise_application_error(-20010,'播放時間太高');' – Ben
創建或替換觸發器BAND_T 之前 插入或更新OF average_song_time,number_of_songs on BAND for each row begin if :new.average_song_time *:new.number_of_songs> 100; then raise_application_error(-20010,'Play Time is too high'); end if; 結束; / – dan
爲了將來的參考,'select * from user_errors'會顯示你的編譯錯誤。 – APC