declare
maxl number;
idnew number;
begin
for t in (select id from t2) loop
select max(level) ll into maxl from t1 start with id=t.id connect by prior pid=id;
select id into idnew from
(select level ll, id,pid from t1 start with id=t.id connect by prior pid=id)
where ll=maxl-1;
update t2 set id=idnew where id=t.id;
end loop;
commit;
end;[@more@]
maxl number;
idnew number;
begin
for t in (select id from t2) loop
select max(level) ll into maxl from t1 start with id=t.id connect by prior pid=id;
select id into idnew from
(select level ll, id,pid from t1 start with id=t.id connect by prior pid=id)
where ll=maxl-1;
update t2 set id=idnew where id=t.id;
end loop;
commit;
end;[@more@]
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/7312700/viewspace-1002636/ ，如需转载，请注明出处，否则将追究法律责任。
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