Parent child replication

Hi All,
Query help:
Oracle Database :10g
suppose i have this tree as rows
            parent
               child1
               child2
CHILD2 parent is CHILD1, and CHILD1 parent is PARENT
Now, i need to replicate this tree something like.
          Rep_Parent --parent
        Rep_child2            child1
    Rep_child3                  child2
Need to replicate , REP_PARENT whose parent is PARENT, REP_CHILD2 parent is REP_PARENT , REP_CHILD3 parent is Rep_child2
One more case...
          parent
    Rep_child1 child1
Need to replicate , in thsi case just need to replicate CHILD1 to   REP_CHILD1 having same parent PARENT
I will have some indicators on the records as whether to replicate it or not.Edited by: user8650395 on Nov 17, 2009 4:24 AM

Hi,
Refer link [SYS_CONNECT_BY_PATH|http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/functions164.htm|connect by] for more information
*009*

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Frank Kulash wrote:
Assuming that each child's id is formed by adding exactly one character to the end of its parent's id:
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START WITH     id          = :target_id
CONNECT BY     PRIOR id     LIKE id || '_';
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Wrote file afiedt.buf
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So basically this means that if I build a parent child hierarchy on table A having the stucture like
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--------Bill (Off2)
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Ok, so let me explain this in detail and give the structure of my tables and the data,
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pctable
personid | managerid
David | NULL
Sandra| David
Joe|Sandra
reltable
memberkey | ancestorkey |distance |is_leaf
David|NULL|NULL|0
David|David|0|0
Sandra|Sandra|0|0
Joe|Joe|0|0
Sandra|David|1|0
Joe|Sandra|1|1
Joe|David|2|1
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personid|revenue
David|5
Sandra|5
Joe|10
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pctable.personid = reltable.ancestorkey
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---David(20)
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Thank you

I guess it will update when the structure changes,Let see the response from other gurus.
Thanks,

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How to Differentiate between Parent & child item of material determination

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Help needed in retrieving parent child relationship values

Hi,
I have a requirement to get parent child relationship values as below.
Ex: Address table
cont cont_code state state_code
C1 10 S1 1
C1 10 S2 2
C1 10 S3 3
C2 20 S4 4
C2 20 S5 5
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I want a result of country/state and corresponding code like below.
corresponding states should be displayed under each country with some space appended to it.
Geography code
C1 10
S1 1
S2 2
S3 3
C2 20
S4 4
S5 5
C3 30
S6 6
S7 7
S8 8
I am using oracle 10g version.
Thanks in advance.

Hi,
When you post formatted text (like your output) on this site, type these 6 characters:
\(small letters only, inside curly brackets) before and after each section of formatted text, to preserve spacing.
I think you're saying that you want this output:GEOGRAPHY CODE
C1 10
S1 1
S2 2
S3 3
C2 20
S4 4
S5 5
C3 30
S6 6
S7 7
S8 8
If so, UNION, as Hoek suggested, is a good way.
GROUP BY ROLLUP is more efficient, but harder to understand:SELECT     CASE
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,      ROLLUP (state)
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By the way, this looks like a bad table design.
In a relational database, the fact that the name 'C1' belongs to cont_code 10 should only be stored in one place. You have the same information on 3 separate rows.
Also, if 'C1' and 'S1' are both names, they should probably be in the same column, so that (to give just one example) you can find the information about 'x1' without knowing if it is a cont or a state.
A better design would be.NAME     CODE     PARENT     DSCR
====     ====     ======     ====
C1     10          CONT
S1     1     10     STATE
S2     2     10     STATE
S3     3     10     STATE
C2     20          CONT
S4     4     20     STATE
S5     5     20     STATE
C3     30          CONT
S6     6     30     STATE
S7     7     30     STATE
S8     8     30     STATE
If the data is this simple, then the dscr column isn't needed. Whether parent is NULL or not tells whether the rows represents a cont or a state.
To get the results you want from a table like this, you could use CONNECT BY. Using either UNION or ROLLUP, you have to know, at the time you write the query, how many levels there will be in the parent-child tree, and the length of the code is proportional to that depth, and the table has to be changed if you ever need to add another level. CONNECT BY can handle any number of levels, and the length and complexity of the code is the same whether you have just 2 levels (countries and strates), or 7 levels (continents, regions, countiries, states, districts, cities and neighborhoods) or 72 levels. The table doesn't need any more columns, no matter how deep the tree gets.
Edited by: Frank Kulash on Sep 16, 2010 11:54 AM

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