Question

尝试让Oracle获取日期，将其设置为仅年份，并与之前插入或更新到我的数据库中的值进行比较这是我到目前为止所尝试的。但我似乎陷入困境任何帮助都会很棒，谢谢

create or replace
TRIGGER CHECK_YEAR_DIFF
BEFORE INSERT OR UPDATE OF YEAROFPERSON ON PERSON 
FOR EACH ROW 

Currentdate Date; 
Playeryrborn_Var Integer;

Begin

Currentdate := TRUNC(Sysdate,'YYYY');
YEAROFPERSON_var := new.YEAROFPERSON;

  IF (currentDate - YEAROFPERSON_var <= 40) AND (currentDate - YEAROFPERSON_var => 16) THEN 

  dbms_Output.Put_Line('Year of Birth Updated Successfully');

  ELSE

  dbms_output.put_line('Year of Birth Failed to Successfully Update');

  END IF;

END;

Answer 1

我认为你需要改变这条线： currentDate - YEAROFPERSON_var＆lt; = 40

要：

cast(to_char(sysdate, 'YYYY') as int) - YearOfPerson_Var <= 40

Answer 2

IF（currentDate - YEAROFPERSON_var＆lt; = 40）AND（currentDate - YEAROFPERSON_var =＆gt; 16）

替换为以下

IF（currentDate - YEAROFPERSON_var＆lt; = 40）AND（currentDate - YEAROFPERSON_var＆gt; = 16）

ORACLE SQL比较年份范围触发器

2 个答案: