Reputation: 13
This is my trigger:
CREATE OR REPLACE TRIGGER trg_CheckStaffID
BEFORE INSERT ON ASSIGN
FOR EACH ROW
BEGIN
DECLARE id integer := 0;
SET id := (select count(*) from (select staffid from staff where staffid ='T2');
IF (id=0) THEN
RAISE_APPLICATION_ERROR(-20000,'Please Enter A Valid Staff ID');
END IF;
END;
/
And this is the error message I get:
PLS-00103: Encountered the symbol "SELECT" when expecting one of the following:
( - + case mod new not null
continue avg count current exists max min prior sql stddev
sum variance execute forall merge time timestamp interval
date
pipe
PLS-00103: Encountered the symbol "IF"
PLS-00103: Encountered the symbol "end-of-file" when expecting one of the following:
end not pragma final instantiable order overriding static
member constructor map
Upvotes: 1
Views: 30
Reputation: 143163
Invalid syntax on different places; DECLARE
section should be before BEGIN
. There's no SET
command in PL/SQL.
Here's code that compiles; whether it does what you meant, can't tell. (I'm creating dummy tables, just to make sure that trigger creation wouldn't fail).
SQL> create table assign (id number);
Table created.
SQL> create table staff (staffid varchar2(2));
Table created.
SQL> create or replace trigger trg_checkstaffid
2 before insert on assign
3 for each row
4 declare
5 id integer := 0;
6 begin
7 select count(*)
8 into id
9 from (select staffid
10 from staff
11 where staffid ='T2');
12
13 if id = 0 then
14 raise_application_error(-20000, 'Please Enter A Valid Staff ID');
15 end if;
16 end;
17 /
Trigger created.
SQL>
Upvotes: 1