Question

JOBS (id_job, startdate, enddate, hours_job_per_employee)
EMPLOYEE (id_employe, id_job, startdate, enddate)

例如：

JOB:

   id_job    startdate    enddate    hours_job_per_employee
------------------------------------------------------------------
      1     02/05/2012   04/08/2013         1221
      2     04/07/2014   12/12/2016         1825


EMPLOYEE:

id_employee  id_job       startdate      enddate  
------------------------------------------------------------------
      1         1         02/05/2012   06/06/2012
      1         1         01/01/2013   02/05/2013
      2         1         02/08/2014   04/09/2014
      1         2         03/09/2014   04/04/2015

如果每位员工每周工作时间不超过70岁，我必须用触发器检查。每位员工可以在EMPLOYEE上多次出现相同的工作。

我正在使用oracle

我尝试了这个但不起作用：

CREATE TRIGGER TRIG1
  BEFORE INSERT OR UPDATE on employee
  FOR EACH ROW
DECLARE
  count NUMBER;
  firstdate DATE;
  days NUMBER;
  hoursday NUMBER;
BEGIN
  SELECT startdate INTO firstdate FROM employee WHERE rownum=1 AND id_employee= :NEW.id_employee ORDER BY startdate;

  SELECT to_number(to_char(enddate,'J')-to_char(firstdate,'J')) INTO days FROM employee WHERE rownum=1 AND id_employee= :NEW.id_employee ORDER BY startdate DESC; 
                                                                                                            AND m.enddate > n.enddate;

FOR i IN 0..days LOOP
   count:=0;
FOR j IN 0..6 LOOP
  hoursday:=0;
  SELECT sum(p.hours_job_per_employee//7*to_number(to_char(enddate,'J')-to_char(startdate,'J')))) INTO hoursday FROM 
    job p JOIN employee m ON (p.id_job=m.id_job) 
    WHERE :NEW.id_employee= m.id_employee AND to_char(firstdate,'J')+1 > to_char(m.startdate,'J') AND to_char(firstdate,'J')+1 < to_char(m.enddate,'J')
    ORDER BY m.startdate;
    firstdate := to_date(firstdate+1,'DD-MM-YY');
    count := count+hoursday;
  END LOOP;
  IF count>70 THEN RAISE_APPLICATION_ERROR(-20000,'FAIL'); END IF;
END LOOP;
END TRIG1;
/

但是没有正确运行..为什么？不应该给它时发送我的错误

触发不超过值

0 个答案: