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我創建了一個函數,我認爲它是正確的,但我不知道如何在觸發器中調用它。我知道觸發是錯誤的,但多數民衆贊成我已經試過 功能:在觸發器中使用函數
create or replace function log_in(pass in varchar2, user in varchar2)
return number
is
match_count number;
begin
select count(*)
into match_count
from Member
where username=user
and password=pass;
return match_count;
end;
觸發:
create or replace TRIGGER PASSWORDCHECK
BEFORE INSERT OR UPDATE ON Login
FOR EACH ROW
DECLARE
usern VARCHAR2(12);
pass VARCHAR2(12);
result number;
BEGIN
usern := :new.username;
pass := :new.password;
/*Select LOG_IN(pass,usern)INTO result From MEMBER Where usern = Username;*/
result := LOG_IN(pass,usern);
If result = 1 THEN
dbms_output.put_line('Login Succesful');
ElsIF result = 0 THEN
dbms_output.put_line('Login Failed');
END IF;
END;
什麼RDBMS是這個? – 2014-11-14 15:39:09
對不起,它的SQL oracle即時通訊使用,我認爲這就是你要找的 – user3433399 2014-11-14 15:42:36
你是否在調用觸發dbms_output?沒有什麼可以正常看到的。 – OldProgrammer 2014-11-14 15:52:09