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create sequence users_seq;
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create or replace trigger bifer_users_userid_pk
before insert
on users
for each row
begin
select users_seq.nextval into:new.userid from dual;
end;
/
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ÉÌÆ·±íÐòÁУºcreate sequence product_seq;
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create or replace trigger bifer_product_itemid_pk
before insert
on product
for each row
begin
select product_seq.nextval into:new.itemid from dual;
end;
/
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ÉÌÆ·Æ·ÅƱíÐòÁУºcreate sequence brand_seq;
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create or replace trigger bifer_brand_brandid_pk
before insert
on brand
for each row
begin
select brand_seq.nextval into:new.brandid from dual;
end;
/
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ÉÌÆ·±íÐòÁУºcreate sequence class_seq;
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create or replace trigger bifer_class_classid_pk
before insert
on class
for each row
begin
select class_seq.nextval into:new.classid from dual;
end;
/
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ÉÌÆ·Æ·ÅÆÀà±ðÐòÁУºcreate sequence brand_class_seq;
ÉÌÆ·Æ·ÅÆÀà±ð´¥·¢Æ÷(brandid)£º
create or replace trigger brand_class_brandid_pk
before insert
on brand_class
for each row
begin
select brand_class_seq.nextval into:new.brandid from dual;
end;
/
ÉÌÆ·Æ·ÅÆÀà±ð´¥·¢Æ÷(classid)£º
create or replace trigger brand_class_classid_pk
before insert
on brand_class
for each row
begin
select brand_class_seq.nextval into:new.classid from dual;
end;
/
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