result of the hierarchical query in xml format

Pls find below the example script table and the desired output format. Output XML must keep the information of hierarchy that is the requirement. Also is it possible to do it in single sql.
Thank you.
CREATE TABLE MAIN
(
IDENTIFICATION NUMBER,
NAME VARCHAR2 (20 BYTE)
);

INSERT INTO THE HAND (ID, NAME) VALUES)
1, "OS");
INSERT INTO THE HAND (ID, NAME) VALUES)
2, 'Windows');
INSERT INTO THE HAND (ID, NAME) VALUES)
3, 'BACK');
INSERT INTO THE HAND (ID, NAME) VALUES)
4, "1.x");
INSERT INTO THE HAND (ID, NAME) VALUES)
5, "1.1.x");
INSERT INTO THE HAND (ID, NAME) VALUES)
7, "1.1.1.1");
INSERT INTO THE HAND (ID, NAME) VALUES)
8, ' (1.2');
INSERT INTO THE HAND (ID, NAME) VALUES)
9, '2.x');
INSERT INTO THE HAND (ID, NAME) VALUES)
10, ' (2.1');
INSERT INTO THE HAND (ID, NAME) VALUES)
11, "2.2");
INSERT INTO THE HAND (ID, NAME) VALUES)
12, ' 2.2.1');
INSERT INTO THE HAND (ID, NAME) VALUES)
13, ' 2.2.2');
COMMIT;

CREATE TABLE RELA
(
NUMBER OF REL_ID
IDENTIFICATION NUMBER,
NUMBER OF PARENT_REL_ID
);

INSERT INTO RELA (REL_ID, ID, PARENT_REL_ID) VALUES)
1, 1, NULL);
INSERT INTO RELA (REL_ID, ID, PARENT_REL_ID) VALUES)
2, 2, 1);
INSERT INTO RELA (REL_ID, ID, PARENT_REL_ID) VALUES)
3, 4, 2);
INSERT INTO RELA (REL_ID, ID, PARENT_REL_ID) VALUES)
4, 5, 3);
INSERT INTO RELA (REL_ID, ID, PARENT_REL_ID) VALUES)
5, 7, 4);
INSERT INTO RELA (REL_ID, ID, PARENT_REL_ID) VALUES)
6, 8, 4);
INSERT INTO RELA (REL_ID, ID, PARENT_REL_ID) VALUES)
7, 9, 2);
INSERT INTO RELA (REL_ID, ID, PARENT_REL_ID) VALUES)
8, 10, 7);
INSERT INTO RELA (REL_ID, ID, PARENT_REL_ID) VALUES)
12, 7, 11);
INSERT INTO RELA (REL_ID, ID, PARENT_REL_ID) VALUES)
14, 9, 9);
INSERT INTO RELA (REL_ID, ID, PARENT_REL_ID) VALUES)
15, 10, 14);
INSERT INTO RELA (REL_ID, ID, PARENT_REL_ID) VALUES)
9, 3, 1);
INSERT INTO RELA (REL_ID, ID, PARENT_REL_ID) VALUES)
10, 4, 9);
INSERT INTO RELA (REL_ID, ID, PARENT_REL_ID) VALUES)
11, 5, 10);
INSERT INTO RELA (REL_ID, ID, PARENT_REL_ID) VALUES)
16, 11, 14);
INSERT INTO RELA (REL_ID, ID, PARENT_REL_ID) VALUES)
13, 8, 10);
INSERT INTO RELA (REL_ID, ID, PARENT_REL_ID) VALUES)
17, 12, 16);
INSERT INTO RELA (REL_ID, ID, PARENT_REL_ID) VALUES)
18, 13, 16);
COMMIT;

Example query
Select rel_id, level, lpad (' ', 5 * level) | name,
XmlElement ("rel_id", XMLAttributes (name as "name", rel_id as "rel_id")) as val
principal, rela
where main.id = rela.id
Start with parent_rel_id is null
Connect prior rel_id = parent_rel_id;

Required xml output
Required xml output

< 1 name = "OS" >
< name 2 = "Windows" >
< 3 name = "1.x" 3 > ""
< name 4 = "1.1.x" >
< name 5 = "1.1.1.1" > < / 5 >
< name 6 = "1.2" > < / 6 >
< / 4 >
< / 3 >
< name = "" 2.x 7 ">"
< name 8 = "2.1" > < / 8 >
< / 7 >
< / 2 >
< name 9 'BACK' = >
< name = "2.x 14" > "
< name 15 = "2.1" > < / 15 >
< name 16 = "2.2" >
< name 17 = '2.2.1' > < / 17 >
< name 18 = '2.2.2' > < / 18 >
< / 16 >
< / 14 >
< 10 name = "1.x" > "
< name 11 = "1.1.x" >
< name 12 = "1.1.1.1" > < / 12 >
< / 11 >
< name 13 = "1.2" >
< / 13 >
< / 10 >
< / 9 >
< 1 >

Published by: delights on September 18, 2009 16:47

Published by: delights Sep 19, 2009 09:53

No string function helps eliminate r because the xml output is great (in a real scenario) which gives "buffer too small" error.

Try sth like

SQL>select replace(x.column_value.getclobval(), 'XXX') xml
  2    from xmltable ('.' passing dbms_xmlgen.getxmltype (dbms_xmlgen.
  3                   newcontextfromhierarchy (
  4                   'select level, xmlelement (evalname ''XXX'' || rel_id, xmlattributes(name "name")) name
  5        from main, rela
  6       where main.id = rela.id
  7  start with parent_rel_id is null
  8  connect by prior rel_id = parent_rel_id'
  9                   ))) x
 10  /

XML
--------------------------------------------------------------------------------

<1 name="OS">
  <2 name="Windows">
    <3 name="1.x">
      <4 name="1.1.x">
        <5 name="1.1.1.1"/>
        <6 name="1.2"/>
      
    
    <7 name="2.x">
      <8 name="2.1"/>
    
  
  <9 name="DOS">
    <10 name="1.x">
      <11 name="1.1.x">
        <12 name="1.1.1.1"/>
      
      <13 name="1.2"/>
    
    <14 name="2.x">
      <15 name="2.1"/>
      <16 name="2.2">
        <17 name="2.2.1"/>
        <18 name="2.2.2"/>
      
    
  


SQL>

Newcontextfromhierarchy is not a documented feature do not know if it will issue in releated support this in production code.

Oracle's recommeds to use newcontextfromhierarchy in Metalink Note 882887.1 ;)

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 (select 1 , 10 ,20 from dual union all
 select 2 , 10 ,21 from dual union all
 select 3 , 20 ,30 from dual union all
 select 4 , 20 ,31 from dual union all
 select 5 , 30 ,40 from dual union all
 select 6 , 31 ,41 from dual union all
 select 7 , 100 ,200 from dual union all
 select 8 , 100 ,210 from dual union all
 select 9 , 200 ,300 from dual union all
 select 10 , 200 ,310 from dual union all
 select 11 , 300 ,400 from dual union all
 select 12 , 310 ,410 from dual )
    Expected results
    PRNT_ID   CHLD_ID
------    ------
10            21
10            40
10            41
100            210
100            400
100            410
    Thank you

    What:

    SQL> select * from t;

        ID    PRNT_ID    CHLD_ID
---------- ---------- ----------
         1         10         20
         2         10         21
         3         20         30
         4         20         31
         5         30         40
         6         31         41
         7        100        200
         8        100        210
         9        200        300
        10        200        310
        11        300        400
        12        310        410

12 rows selected.

SQL> select min(isroot)
  2  ,      chld_id
  3  from ( select connect_by_root prnt_id  isroot
  4         ,      chld_id
  5         ,      connect_by_isleaf isleaf
  6         from   t
  7         connect by prnt_id = prior chld_id
  8       )
  9  where isleaf = 1
 10  group by chld_id;

MIN(ISROOT)    CHLD_ID
----------- ----------
         10         21
         10         40
         10         41
        100        210
        100        400
        100        410

6 rows selected.

  • Is it possible to fill a table with the result of the active query?

    I try to get the content of the cursor c in the ap variable and the code I use is as follows:

    BEGIN
    DECLARE
    TYPE cur_typ IS REF CURSOR;
    c cur_typ;
    query_str VARCHAR2 (1000);
    work VARCHAR2 (1000);
    AP varchar2 (30000);
    to the varchar2 (30000);
    query varchar2 (30000);
    BEGIN
    query_str: = ' select ent_cod, ent_nom from grh_funcionarios where rownum < 10';
    query: = 'CURSOR c IS' |' select ent_cod, ent_nom from grh_funcionarios where rownum < 10';
    IMMEDIATE EXECUTION of the query;

    C OPEN FOR query_str;
    for ap loop query_str
    LOOP
    Fetch c ap;
    EXIT WHEN c % NOTFOUND;
    DBMS_OUTPUT. Put_line(àles);
    END LOOP;
    C CLOSE;
    END;
    END;

    I'll show you a basic approach to the dynamic approach refcursor. But you have to do a lot of work in order to customize it to your needs.

    Here is a demonstration of basic->

    satyaki>
satyaki>select * from v$version;

BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Prod
PL/SQL Release 10.2.0.3.0 - Production
CORE    10.2.0.3.0      Production
TNS for 32-bit Windows: Version 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production

Elapsed: 00:00:00.22
satyaki>
satyaki>
satyaki>DECLARE
  2     str         VARCHAR2 (30000);
  3
  4     cursor c1
  5     is
  6       select column_name
  7       from all_tab_columns
  8       where table_name = upper('&tab_nm')
  9       and   column_name = 'ENAME';
 10
 11     r1 c1%rowtype;
 12  BEGIN
 13     str := ' declare '||
 14            '   TYPE cur_typ IS ref cursor; '||
 15            '   c           cur_typ; '||
 16            '   query_str   VARCHAR2 (1000); '||
 17            '   gen_rec '||upper('&tab_nam')||'%rowtype; '||
 18            ' begin '||
 19            '  query_str := '||chr(39)||'select * from emp where rownum < 10'||chr(39)||'; '||
 20            '  OPEN c FOR query_str; '||
 21            '  LOOP '||
 22            '    FETCH c INTO gen_rec; '||
 23            '     EXIT WHEN c%NOTFOUND; ';
 24            for r1 in c1
 25            loop
 26      str := str||'   DBMS_OUTPUT.put_line (gen_rec.'||r1.column_name||'); ';
 27            end loop;
 28      str := str||'  END LOOP; '||
 29            '  CLOSE c; '||
 30            ' end; ';
 31
 32     execute immediate(str);
 33     --dbms_output.put_line(str);
 34  END;
 35  /
Enter value for tab_nm: emp
old   8:      where table_name = upper('&tab_nm')
new   8:      where table_name = upper('emp')
Enter value for tab_nam: emp
old  17:           '   gen_rec '||upper('&tab_nam')||'%rowtype; '||
new  17:           '   gen_rec '||upper('emp')||'%rowtype; '||
SATYAKI
SOURAV
WARD
JONES
MARTIN
BLAKE
CLARK
SCOTT
KING

PL/SQL procedure successfully completed.

Elapsed: 00:00:00.16

    Hope this will give you a basic idea.

    Kind regards.

    LOULOU.

  • Reg: Hierarchical query (using connection by)

    Hi all
    I got the result with the hierarchical query in the form:
    * / qxxh *.
    * / qxxh/jxobcbg *.
    * / qxxh/jxobcbg/n00wcp4 *.
    * / qxxh/jxobcbg/n00wcp4 / 000263 x *.
    * / qxxh/jxobcbg/n00wcp4 / x 000263 / p0263 *.
    * / qxxh/jxxocbg *.
    * / qxxh/jxxocbg/n00voc1 *.
    * / qxxh/jxxocbg/n00voc1 / x 000589 *.
    * / qxxh/jxxocbg/n00voc1 / x 000589 / p0589 *.
    * / qxxh/jxuwxxh *.
    * / qxxh/jxuwxxh/n00xpxf *.
    * / qxxh, jxuwxxh, n00xpxf, m00bxpl *.
    * / qxxh/jxuwxxh/n00xpxf/m00bxpl / 000522 x *.
    * / qxxh/jxuwxxh/n00xpxf/m00bxpl / 000522 x / p0522 *.

    Here, I want to select only the maximum path. Here I used "SYS_CONNECT_BY_PATH.
    Please let meknow how to do this?
    Thanks in advance.

    Published by: udeffcv on December 9, 2009 22:03

    udeffcv wrote:
    Hi all
    I got the result with the hierarchical query in the form:
    * / qxxh *.
    * / qxxh/jxobcbg *.
    * / qxxh/jxobcbg/n00wcp4 *.
    * / qxxh/jxobcbg/n00wcp4 / 000263 x *.
    * / qxxh/jxobcbg/n00wcp4 / x 000263 / p0263 *.
    * / qxxh/jxxocbg *.
    * / qxxh/jxxocbg/n00voc1 *.
    * / qxxh/jxxocbg/n00voc1 / x 000589 *.
    * / qxxh/jxxocbg/n00voc1 / x 000589 / p0589 *.
    * / qxxh/jxuwxxh *.
    * / qxxh/jxuwxxh/n00xpxf *.
    * / qxxh, jxuwxxh, n00xpxf, m00bxpl *.
    * / qxxh/jxuwxxh/n00xpxf/m00bxpl / 000522 x *.
    * / qxxh/jxuwxxh/n00xpxf/m00bxpl / 000522 x / p0522 *.

    Here, I want to select only the maximum path. Here I used "SYS_CONNECT_BY_PATH.
    Please let meknow how to do this?
    Thanks in advance.

    Published by: udeffcv on December 9, 2009 22:03

    What do you mean by maximum path? is this...
    * / qxxh/jxobcbg/n00wcp4 / x 000263 / p0263 *.
    * / qxxh/jxxocbg/n00voc1 / x 000589 / p0589 *.
    * / qxxh/jxuwxxh/n00xpxf/m00bxpl / 000522 x / p0522 *.

    is it child nodes?
    so, you would like to see
    Column nickname... CONNECT_BY_ISLEAF example, you can find it in the link below
    http://download.Oracle.com/docs/CD/B14117_01/server.101/b10759/pseudocolumns001.htm#sthref670

    Ravi Kumar

  • the SQL query result format

    Format the results of the SQL query, currently, show as below.

    Select license_type, correspondents of license_info where license_type in ('TEM', 'TDM') order by license_type;

    TDM 1445140800000000000
    TDM 1420952400000000000
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    TDM 1428724800000000000
    TEM 1421125200000000000
    TEM 1423890000000000000
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    TEM 1444968000000000000
    TEM 1428724800000000000

    I need formatting like below

    Expected result:

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    TDM 1420952400000000000 TEM 1423890000000000000
    TDM 1444363200000000000 TEM 1449637200000000000
    TDM 1445054400000000000 TEM 1444968000000000000
    TDM 1428724800000000000 TEM 1428724800000000000

    I have sample data only, Blue said the change in your main table request

    Try:

    Select max (f1),

    Max (F2),

    Max (F3),

    Max (F4)

    de)

    Select decode (license_type, 'TDM' license_type) f1,

    Decode (license_type, 'TDM', expiration_date) f2,

    Decode (license_type, 'TEM' license_type) f3,

    Decode (license_type, 'TEM', expiration_date) f4,

    ROW_NUMBER() over (partition by order correspondents license_type) r

    Of

    )

    R group

    ----

    Ramin Hashimzade

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