How to extend the ralations duplicate?

Hi all
I tableA (code, street_name, street_number, att1, att2) and theres duplicate code, street_name and street_numbers.
I have found using code duplication:
Select code from tableA where code in (select code from tableA group by code having count (*) > 1)
but at the same time, the code has been changed and I have other code and the old street_name and the old street_number
so tableA now have:
oldCODE, street_name, street_number and newCODE, street_name, street_number - double street_name and street_number!.
tableA have 7000 files.
Question how is this double street_name and street_number with this different code (old and new CODE)?
Thanks in advance
Gordan

Published by: useruseruser on August 25, 2008 09:48

Here is a test:

SQL> with tbl as
  2  (select 1 id, 'str1' str, 12 nb from dual union all
  3   select 2 id, 'str1' str, 12 nb from dual union all
  4   select 3 id, 'str1' str, 12 nb from dual union all
  5   select 4 id, 'str2' str, 13 nb from dual union all
  6   select 5 id, 'str3' str, 14 nb from dual)
  7  select str, nb, max(ltrim(sys_connect_by_path(id,' - '),' -')) keep (dense_rank last order by length(sys_connect_by_path(id,' - ')))dup_id
  8  from   tbl
  9  connect by prior id < id and prior str = str and prior nb = nb
 10  group by str, nb
 11  having count(*)>1;

STR          NB DUP_ID
---- ---------- --------------------------------------------------------------------------------
str1         12 1 - 2 - 3

SQL>

However, not sure how to distinguish the old code and the new.

Nicolas.

Tags: Database

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