trigger codes:
create or replace trigger limitinsertbefor
before insert on student
for each row
when((sysdate-old.birthday)/365<18)
begin
insert into trigger_table values('update',:old.studentid,:new.studentid,sysdate,'student');
end limittinsertbefor;
// Table student structure
Name Type Nullable Default Comments
----------- ------------ -------- ------- --------
STUDENTID VARCHAR2(8)
STUDENTNAME VARCHAR2(8)
BIRTHDAY DATE Y
CLASSID VARCHAR2(12) Y
execution statement;
insert into student values('20053822','lanlan',to_date('19860825','yyyyhhdd'),'201001');
ERROR CODE:
ORA-00932: inconsistent datatypes: expected NUMBER got DATE
But if i get rid of this condition:when((sysdate-old.birthday)/365<18) this execution statement will run succeed.
Maybe this condition which when((sysdate-old.birthday)/365<18) doesn't work. but i can't find reason about this issue .
feel free pls help me ! thans
i very sorry that i don't have enough score with me so that i can't prove more score for this question.
SORRY!!!