-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中将两列相乘,当两列的值达到一定数量时,我的触发器将被触发,只是想知道该代码出错的地方?触发器在oracle2中相乘两列
'declare'节未使用。和'raise_application_error(错误-2010'播放时间太高');' '应该是'raise_application_error(-20010,'播放时间太高');' – Ben
创建或替换触发器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; 结束; / – dan
为了将来的参考,'select * from user_errors'会显示你的编译错误。 – APC