create or replace trigger order_b5
before insert on order_b
for each row
declare
dj varchar2(3000);
begin
dj:=(select price from danjia b where b.id:new.id and rownum=1);
:new.vbdef16 :=dj;
end order_b5;



报错误：PLS-00103: ，
以下就没有问题，但我想我想从其它表取值过来。应该怎么写呢？
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create or replace trigger order_b5
before insert on order_b
for each row
declare
dj varchar2(3000);
begin
dj:=‘1’;
:new.vbdef16 :=dj;
end order_b5;