我正在尝试在配音数据库中触发时间。我想检查一下在不出现角色的电影配音中不能对角色进行配音。这是PDM:
和CDM
我是SQL的初学者,但我知道表“DUBBES”中应该有一些触发器。我试图做这样的事情,但是我收到一条消息,指出触发器无效:
CREATE OR REPLACE TRIGGER x_character
BEFORE INSERT OR UPDATE ON dubbes FOR EACH ROW
DECLARE
IF ( :NEW.CHAR_id_character NOT IN ( SELECT CHAR_id_CHARACTER
FROM APPEARS
WHERE APPEARS.MOV_id_movie = (SELECT dubbing.Mov_id_movie
FROM DUBBING
WHERE dubbing.id_dubbing = :NEW.dab_id_dubing)))
THEN
RAISE_APPLICATION_ERROR(-20000, 'Character is not in this movie.');
END IF;
END;
/
我真的很感谢您的帮助。
提前谢谢了!
最佳答案
我认为您的代码应如下所示:
create or replace trigger X_character BEFORE INSERT OR UPDATE ON dubbes
FOR EACH ROW
DECLARE
haveit number;
idmovie number;
begin
select dubbing.Mov_id_movie into idmovie from DUBBING where dubbing.id_dubbing = :new.dab_id_dubing;
select count(*) into haveit from APPEARS
where
APPEARS.MOV_id_movie = idmovie and
APPEARS.CHAR_id_CHARACTER = :new.CHAR_id_character;
IF( haveit = 0 ) then
RAISE_APPLICATION_ERROR(-20000, 'Character is not in this movie.');
END IF;
END;
/
关于sql - SQL-触发 “not in”,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/27859014/