Reg: Hierarchical query (using connection by)

Similar Questions

• Help in hierarchical query

  Hello
  
  I have data like this.
  
  EMPID ENAME MANAGERID
  1A
  2 1
  1 OF 3
  4 2
  5 2
  6 3
  4 OF 7
  
  And I want to show the data in this way. SUPERMNAGERID is always 1, regardless of the fact that that which is his immediate superior.
  
  EMPID ENAME MANAGERID SUPERMNAGERID
  1A
  2-1-1
  3-1-1
  4-2-1
  5-2-1
  6-3-1
  7-4-1
  
  Your help on this would be really useful.
  
  Edited by: user10827825 may 6, 2012 12:36

  Most inefficient way. If you want to use a hierarchical query, use START WITH and to get the "supermanager" use CONNECT_BY_ROOT:

  WITH t AS
       (SELECT 1 EMPID, 'A' ENAME, NULL MANAGER_ID
          FROM DUAL
        UNION ALL
        SELECT 2 EMPID, 'B' ENAME, 1 MANAGER_ID
          FROM DUAL
        UNION ALL
        SELECT 3 EMPID, 'C' ENAME, 1 MANAGER_ID
          FROM DUAL
        UNION ALL
        SELECT 4 EMPID, 'D' ENAME, 2 MANAGER_ID
          FROM DUAL
          UNION ALL
        SELECT 5 EMPID, 'E' ENAME, 2 MANAGER_ID
          FROM DUAL
        UNION ALL
        SELECT 6 EMPID, 'F' ENAME, 3 MANAGER_ID
          FROM DUAL
        UNION ALL
        SELECT 7 EMPID, 'G' ENAME, 4 MANAGER_ID
          FROM DUAL
          )
  SELECT EMPID, ENAME, MANAGER_ID, CONNECT_BY_ROOT EMPID
    FROM t
    START WITH MANAGER_ID IS NULL
    CONNECT BY MANAGER_ID = PRIOR EMPID
    ORDER BY EMPID;
  

  Compare the number of lines hierarchy is generated by bot queries:

  SQL> WITH t AS
    2       (SELECT 1 EMPID, 'A' ENAME, NULL MANAGER_ID
    3          FROM DUAL
    4        UNION ALL
    5        SELECT 2 EMPID, 'B' ENAME, 1 MANAGER_ID
    6          FROM DUAL
    7        UNION ALL
    8        SELECT 3 EMPID, 'C' ENAME, 1 MANAGER_ID
    9          FROM DUAL
   10        UNION ALL
   11        SELECT 4 EMPID, 'D' ENAME, 2 MANAGER_ID
   12          FROM DUAL
   13          UNION ALL
   14        SELECT 5 EMPID, 'E' ENAME, 2 MANAGER_ID
   15          FROM DUAL
   16        UNION ALL
   17        SELECT 6 EMPID, 'F' ENAME, 3 MANAGER_ID
   18          FROM DUAL
   19        UNION ALL
   20        SELECT 7 EMPID, 'G' ENAME, 4 MANAGER_ID
   21          FROM DUAL
   22          )
   23  SELECT count(*)
   24    FROM t
   25    CONNECT BY PRIOR  MANAGER_ID = EMPID
   26    ORDER BY EMPID;
  
    COUNT(*)
  ----------
          18
  
  SQL> WITH t AS
    2       (SELECT 1 EMPID, 'A' ENAME, NULL MANAGER_ID
    3          FROM DUAL
    4        UNION ALL
    5        SELECT 2 EMPID, 'B' ENAME, 1 MANAGER_ID
    6          FROM DUAL
    7        UNION ALL
    8        SELECT 3 EMPID, 'C' ENAME, 1 MANAGER_ID
    9          FROM DUAL
   10        UNION ALL
   11        SELECT 4 EMPID, 'D' ENAME, 2 MANAGER_ID
   12          FROM DUAL
   13          UNION ALL
   14        SELECT 5 EMPID, 'E' ENAME, 2 MANAGER_ID
   15          FROM DUAL
   16        UNION ALL
   17        SELECT 6 EMPID, 'F' ENAME, 3 MANAGER_ID
   18          FROM DUAL
   19        UNION ALL
   20        SELECT 7 EMPID, 'G' ENAME, 4 MANAGER_ID
   21          FROM DUAL
   22          )
   23  SELECT count(*)
   24    FROM t
   25    START WITH MANAGER_ID IS NULL
   26    CONNECT BY MANAGER_ID = PRIOR EMPID
   27    ORDER BY EMPID;
  
    COUNT(*)
  ----------
           7
  
  SQL> 
  

  Now imagine the table real a couple thousand lines.

  SY.

• How to use order by with hierarchical query

  I have a hierarchical query basically he brings an organization chart. We start with the Manager id, get everything that employees of the person. If the employee is also a Manager I want to get the employees of that person and turn them right after that person. I don't bother with the entire query but relevant part is:

         START WITH em.mgr_id = pi_mgr_id
        CONNECT BY nocycle PRIOR em.emp_id = em.mgr_id;

  Where pi_mgr_id is a parameter passed to the procedure and the em is the alias of the emp_mgr_relationship table that contains emp_id and mgr_id. It works very well. What I want now is for employees who work for the same Manager appear in the order of name. The table that contains the names of the employees is an alias as pe and the name column is called name1. I added the following:

         START WITH em.mgr_id = pi_mgr_id
        CONNECT BY nocycle PRIOR em.emp_id = em.mgr_id
          order by pe.name1;

  But what to put the entire list in the order of name. What I want is for the employees who work for the same manager be in name order. We're going to the manager that I want to the body is named Frank. I want to get it

  EMP_NAME    MGR_NAME
  Allen       Frank
  Beth        Frank
  Alex        Beth
  Charles     Beth
  Ed          Beth
  Dean        Frank
  George      Frank
  Benny       George
  David       George
  Sam         George
  Dan         Sam
  Harry       Sam
  John        Sam
  Terry       George
  James       Frank
  Ken         Frank
  Mike        Ken
  Warren      Ken

  How can I get the list in order?
  
  Published by: kendenny on July 28, 2010 07:31

  Make use of the ORDER of Friars and SŒURS clause in the hierarchical queries to define the order of child columns.

  START WITH em.mgr_id = pi_mgr_id
        CONNECT BY nocycle PRIOR em.emp_id = em.mgr_id
          *order siblings by name1;*
  

• Getting the line without the use of hierarchical query values

  Hi all
  
  
  I want to know the hierarchical values without using a hierarchical query. I have two tables EMP, DEPT
  
  EMP table is to have two columns (empid, mgrid)
  DEPT table is to have two columns (deptid, empid)
  
  Data of the EMP
  
  1,
  2, 1
  3, 2
  4, 3
  
  Data DEPT
  
  10, 1
  
  Each time, I gave deptid = 10, I need to know the this deptid empid then who is this empid (child levels as well). In this case, the output should be
  1
  2
  3
  4
  
  I don't want to use hierarchical query.
  
  Thanks in advance.
  
  
  Thank you
  PAL

  You can use the RECURSIVE subquery, if you are 11 GR 2, like this

  SQL> with EMP (empid,mgrid) as
    2  (
    3  select 1,null from dual union all
    4  select 2, 1 from dual union all
    5  select 3, 2 from dual union all
    6  select 4, 3 from dual
    7  ),
    8  dept(deptid,empid) as
    9  (
   10  select 10, 1  from dual
   11  ),
   12  t(empid,mgrid) as
   13  (
   14  select empid,mgrid
   15  from emp e
   16  where empid in (
   17      select d.empid
   18      from dept d
   19      where deptid = 10
   20                  )
   21  union all
   22  select e.empid,e.mgrid
   23  from emp e, t
   24  where e.mgrid = t.empid
   25  )
   26  select *
   27  from t;
  
       EMPID      MGRID
  ---------- ----------
           1
           2          1
           3          2
           4          3
  

  Yet, the question is valid - why can't use you a hierarchical query?

  Published by: JAC on May 29, 2013 12:37

• Connect By hierarchical query clause-

  Hello
  
  I wrote a query using the Connect By clause to generate the table data structure tree with appropriate levels.
  
  But given could not correct as there may be data that did the trick. As Table1 is parent from table 2 and table 2 is parent from table 3 and table 3 is again Parent from table 1. If these incorrect data then I get error Oracle "ORA-01436: CONNECT loop in the user data" which is correct.
  
  What I need is, whenever this error message is triggered I give my own error instead of this Oracle error message in the SQL statement. Please note that I do not use any PLSQL block, I have just one SQL statement. Appreciate any help on this topic. Thank you.

  Hello

  Outside of PL/SQL, I don't know anyway to substitute your own error messages for those that oracle provides.

  In Oracle 10 (and more), you can write a query using the CONNECT_BY_ISCYCLE pseudo-column. Using CONNECTION BY NOCYCLE, the query will never actually throw the error ORA-01436, but you can get it to display your message in the case there, you not used CONNECT BY NOCYCLE.

  Here's how:
  Equip your actual query, CONNECT_BY_ISCYCLE, the WITH clause.
  Get this subquery (CONNECT_BY_ISCYCLE) MAX. We'll call this max_cbi.
  Do a UNION ALL of two pins:
  (1) selects everything (except, pehaps, CONNECT_BY_ISCYCLE), subquery, WHERE max_cbi = 0
  (2) allows you to select your 'error message' double, WHERE max_cbi = 1.

  Published by: Frank Kulash, November 26, 2008 14:09

• Query on hierarchical query in interactive report!

  Hello

  In Apex Oracle 5.1, I tried to use an interactive report to view details of employee based on a hierarchy. I used the query to display data below:

  SELECT last_name, employe_id, manager_id, LEVEL

  Employees

  START WITH employee_id = 100

  CONNECT BY PRIOR employee_id = manager_id

  Brothers and SŒURS of ORDER BY last_name;

  The output was as below:

  LAST_NAME EMPLOYEE_ID MANAGER_ID LEVEL

  ------------------------- ----------- ---------- ----------

  King                                100                                                       1

  Cambrault                        148                                 100                 2

  Bates                              172                                 148                 3

  Bloom                             169                                  148                3

  Fox                                 170                                  148                3

  Kumar                             173                                  148                3

  Ozer                                168                                  148               3

  Smith                               171                                  148              3

  De Haan                           102                                   100             2

  Hunold                              103                                   102             3

  Austin                               105                                   103             4

  Ernst                                 104                                   103             4

  Lorentz                              107                                   103             4

  Pataballa                           106                                    103            4

  Errazuriz                           147                                   100              2

  Ande                                 166                                    147             3

  Banda                               167                                     147             3

  ...

  Now, I would like to display data based on the connection of employees.

  For example (based on above request): If an employee named - Cambrault is the login, only employees under him (Bates, Bloom, Fox, Kumar, Smith, Ozer) and its own contact information should appear in the report.

  Please advise.

  Kind regards

  mebu

  Mebu wrote:

  I used a hierarchical query. But based on Login, I want to display only members under him.

  For example: If Cambrault LOGIN, only employees under him (Bates, Bloom, Fox, Kumar, Smith, Ozer) and its own coordinates must display in Oracle Apex.

  SELECT last_name, employe_id, manager_id, LEVEL

  Employees

  START WITH employee_id = 100

  CONNECT BY PRIOR employee_id = manager_id

  Brothers and SŒURS of ORDER BY last_name;

  See what/when/where? How to get the answers from the forum

  Describe the requirements clearly and completely, using the APEX, Oracle and terminology of web standard.

• hierarchical query of VO in the ofa page

  Hello

  I try to use the hierarchical query in VO for the display of all levels of supervisors for employee and want to display in populist:

  This is the query

  REPLACE SELECT distinct (mgx.full_name, "',' ') supervisor_full_name;

  XPP. Employee_number

  OF per_assignments_x pax,.

  per_people_x ppx,

  per_people_x mgx,

  per_positions pp,

  per_jobs pj,

  per_position_definitions ppd

  WHERE ppx.person_id = pax.person_id

  AND ppx.current_employee_flag = 'Y '.

  AND mgx.person_id = pax.supervisor_id

  AND pp.position_id = pax.position_id

  AND pj.job_id = pax.job_id

  AND ppd.position_definition_id = pp.position_definition_id

  START WITH ppx.employee_number =: 1

  CONNECT BY PRIOR MGX.employee_number = ppx.employee_number AND LEVEL < 6

  I'm trying to get this VO implemented PR when I run the page in jdeveloper with parameter binding, it's getting error.

  oracle.apps.fnd.framework.OAException: oracle.jbo.SQLStmtException: 27122 Houston: SQL error in the preparation of the statement.

  I would like to delete the parameter binding and executing CO VO past these two statements may be:

  START WITH ppx.employee_number =: 1

  CONNECT BY PRIOR MGX.employee_number = ppx.employee_number AND LEVEL < 6

  How can I do?

  Thank you

  MK

  has worked?

• Help with hierarchical query

  I'm trying to parse each string inside of individual characters. For this, I used the link by the hierarchical query clause. I am not able to use connect by correctly. Here is my example.

  with the CBC as)

  Select 1: the nurse, 'abc' double union all Str

  Select 2: the nurse, '123' Str of all union double

  Select 3: the nurse, "pqr xyz" dual union all Str

  Select option 4: the nurse, 'john doe' double Str

  )

  Select the level, homobasidiomycetes, substr(s.str,level,1) as chr

  s of the CBC

  connect nocycle level < = length (homobasidiomycetes)

  /

  The above query returns 3 028 lines when I want that 21. Adding a distinct to select, it's what I want.

  with the CBC as)

  Select 1: the nurse, 'abc' double union all Str

  Select 2: the nurse, '123' Str of all union double

  Select 3: the nurse, "pqr xyz" dual union all Str

  Select option 4: the nurse, 'john doe' double Str

  )

  Select distinct level, homobasidiomycetes, substr(s.str,level,1) as chr

  s of the CBC

  connect nocycle level < = length (homobasidiomycetes)

  order by str, level

  /

  For a large data set I could end up with several million rows before the separate would lead. So, how can I restrict the connection by clause to go within each line.

  Assuming that the AI is the primary key, you could do this:

  with src as (
    select 1 as rn, 'abc' as str from dual union all
    select 2 as rn, '123' as str from dual union all
    select 3 as rn, 'pqr xyz' as str from dual union all
    select 4 as rn, 'john doe' as str from dual
  )
  select level,
        s.str,
        substr(s.str,level,1) as chr
  from src s
  connect by level <= length(s.str)
            and prior rn = rn
            and prior dbms_random.value is not null;
  

  See DBMS_RANDOM.value in a hierarchical solution for string to table? for an exchange of views around the case.

• Hierarchical query result

  Dear all

  I use Oracle Database 10g and I need a hierarchical query giving following release

  KING

  | __JONES

  |   | __SCOTT

  |   | __ADAMS

  |   | __FORD

  |      | __SMITH

  | __BLAKE

  |   | __ALLEN

  |   | __WARD

  |   | __MARTIN

  |   | __TURNER

  |   | __JAMES

  | __CLARK

  | __MILLER

  Best regards

  Try this

  SELECT CASE WHEN level > 1 THEN LPAD (': _ ', LEVEL,' |) ')

  END | Ename AS ename_tree

  WCP

  START WITH mgr IS NULL

  CONNECT BY PRIOR empno = mgr;

• How to write a hierarchical query so that only the child nodes are displayed?

  Hi all

  I have a hierarchical query that I use in an area of tree demand APEX and there are nodes that have no children and I am trying to find a way to not display these nodes. Essentially if the user does not have to develop a lot of knots to know that nothing exists at the most detailed level.

  The data are based on the Oracle Fusion FND tables but for example purposes here is enough data to illustrate my question:

  
  

  create table APPL_TAXONOMY_HIERARCHY (SOURCE_MODULE_ID varchar2(30), TARGET_MODULE_ID varchar2(30));
  create table APPL_TAXONOMY_TL (module_id varchar2(30), description varchar2(100), user_module_name varchar2(30), language varchar2(5));
  create table APPL_TAXONOMY (MODULE_ID    varchar2(30),    MODULE_NAME    varchar2(30), MODULE_TYPE varchar2(10),    MODULE_KEY varchar2(30));
  create table TABLES (table_name varchar2(30), module_key varchar2(30));
  
  

  insert into APPL_TAXONOMY_TL values ('1', null, 'Oracle Fusion', 'US' );
  insert into APPL_TAXONOMY_TL values ('2', null, 'Financials', 'US' );
  insert into APPL_TAXONOMY_TL values ('3', null, 'Human Resources', 'US' );
  insert into APPL_TAXONOMY_TL values ('20', null, 'Accounts Payable', 'US' );
  insert into APPL_TAXONOMY_TL values ('10', null, 'General Ledger', 'US' );
  
  insert into APPL_TAXONOMY_HIERARCHY values ('1', 'DDDDDDDD');
  insert into APPL_TAXONOMY_HIERARCHY values ('2', '1');
  insert into APPL_TAXONOMY_HIERARCHY values ('3', '1');
  insert into APPL_TAXONOMY_HIERARCHY values ('4', '1');
  insert into APPL_TAXONOMY_HIERARCHY values ('10', '2');
  insert into APPL_TAXONOMY_HIERARCHY values ('20', '2');
  
  insert into APPL_TAXONOMY values ('1', 'Fusion', 'PROD', 'Fusion');
  insert into APPL_TAXONOMY values ('2', 'Financials', 'FAMILY', 'FIN');
  insert into APPL_TAXONOMY values ('10', 'GL', 'APP', 'GL');
  insert into APPL_TAXONOMY values ('3', 'Human Resources', 'FAMILY', 'HR');
  insert into APPL_TAXONOMY values ('20', 'AP', 'APP', 'AP');
  
  insert into tables values ('GL_JE_SOURCES_TL','GL');
  insert into tables values ('GL_JE_CATEGORIES','GL');
  

  My hierarchical query is as follows:

  with MODULES as
  (
  SELECT h.source_module_id, b.user_module_name, h.target_module_id
        FROM APPL_TAXONOMY_HIERARCHY H,
        APPL_TAXONOMY_TL B,
  APPL_TAXONOMY VL
  where H.source_module_id = b.module_id
  and b.module_id = vl.module_id
  and vl.module_type not in ('PAGE', 'LBA')
  UNION ALL
  select distinct table_name, table_name,  regexp_substr(table_name,'[^_]+',1,1) 
  from TABLES --needed as a link between TABLES and APPL_TAXONOMY
  union all
  select module_key as source_module_id, module_name as user_module_name, module_id as target_module_id  from appl_taxonomy VL where VL.module_type = 'APP')
  SELECT  case when connect_by_isleaf = 1 then 0
              when level = 1             then 1
              else                           -1
         end as status,
  LEVEL,
  user_module_name as title,
  null as icon,
  ltrim(user_module_name, ' ') as value,
  null as tooltip,
  null as link
        FROM MODULES
        START WITH source_module_id = '1'
        CONNECT BY PRIOR source_module_id = target_module_id
  ORDER SIBLINGS BY user_module_name;
  

  In Oracle APEX, this gives a tree with the appropriate data, you can see here:

  https://Apex.Oracle.com/pls/Apex/f?p=32581:29 (username: guest, pw: app_1000);

  The SQL of the query results are:

  STATUS

  TITLE LEVEL

  VALUE

  ---------- ---------- ------------------------------ ------------------------------

  	1	1 oracle Fusion	Oracle Fusion
  	-1	2 financial tables	Financials
  	-1	3 accounts payable	Accounts payable
  	0	4 AP	AP
  	-1	General Accounting 3	General Accounting
  	-1	4 GL	GL
  	0	5 GL_JE_CATEGORIES	GL_JE_CATEGORIES
  	0	5 GL_JE_SOURCES_TL	GL_JE_SOURCES_TL
  	0	2 human resources	Human resources

  The lowest level is the name of the table to level 5. HR is not any level under level 2, in the same way, "AP" (level 4) has nothing below, i.e. no level 5 and that's why I don't want to show these nodes. Is this possible with the above query?

  Thanks in advance for your suggestions!

  John

  Hello

  The following query will include only the nodes of level = 5 and their ancestors (or descendants):

  WITH modules LIKE

  (

  SELECT h.source_module_id

  b.user_module_name AS the title

  h.target_module_id

  To appl_taxonomy_hierarchy:

  appl_taxonomy_tl b

  appl_taxonomy vl

  WHERE h.source_module_id = b.module_id

  AND b.module_id = vl.module_id

  AND vl.module_type NOT IN ('PAGE', "LBA")

  UNION ALL

  SELECT DISTINCT

  table-name

  table_name

  , REGEXP_SUBSTR (table_name, ' [^ _] +')

  From the tables - required as a link between the TABLES and APPL_TAXONOMY

  UNION ALL

  SELECT module_key AS source_module_id

  AS user_module_name module_name

  module_id AS target_module_id

  Of appl_taxonomy vl

  WHERE vl.module_type = 'APP '.

  )

  connect_by_results AS

  (

  SELECT THE CHECK BOX

  WHEN CONNECT_BY_ISLEAF = 1 THEN 0

  WHEN LEVEL = 1 THEN 1

  OF ANOTHER-1

  The END as status

  LEVEL AS lvl

  title

  -, NULL AS icon

  , LTRIM (title, "") AS the value

  -, NULL as ToolTip

  -, Link AS NULL

  source_module_id

  SYS_CONNECT_BY_PATH (source_module_id - or something unique

  , ' ~' - or anything else that may occur in the unique key

  ) || ' ~' AS the path

  ROWNUM AS sort_key

  Modules

  START WITH source_module_id = '1'

  CONNECT BY PRIOR Source_module_id = target_module_id

  Brothers and SŒURS of ORDER BY title

  )

  SELECT the status, lvl, title, value

  -, icon, tooltip, link

  OF connect_by_results m

  WHEN THERE IS)

  SELECT 1

  OF connect_by_results

  WHERE the lvl = 5

  AND the path AS ' % ~' | m.source_module_id

  || '~%'

  )

  ORDER BY sort_key

  ;

  You may notice that subqueries modules and the connect_by_results are essentially what you've posted originally.  What was the main request is now called connect_by_results, and it has a couple of additional columns that are necessary in the new main request or the EXISTS subquery.

  However, I am suspicious of the 'magic number' 5.  Could you have a situation where the sheets you are interested in can be a different levels (for example, some level = 5 and then some, into another branch of the tree, at the LEVEL = 6, or 7 or 4)?  If so, post an example.  You have need of a Query of Yo-Yo, where you do a bottom-up CONNECT BY query to get the universe of interest, and then make a descendant CONNECT BY query on this set of results.

• Support for hierarchical query

  Hi all

  I must be tired and can't think clearly, so I am a little confused the following query.

  The environment is Oracle 9i:

  Oracle9i Enterprise Edition Release 9.2.0.8.0 - 64 bit Production

  PL/SQL Release 9.2.0.8.0 - Production

  CORE Production 9.2.0.8.0

  AMT for HP - UX: 9.2.0.8.0 - Production Version

  NLSRTL Version 9.2.0.8.0 - Production

  Suppose I have the following data:

  with mydata as

  (

  Select the code 1, code_high, null, 'John' cname 'Smith' csurname, 'X' union resp. double all the

  Select 2 code, 1 code_high, cname 'Bill', 'White' csurname, RESP null in union double all the

  Select 3 code, code_high 2, 'Fred' cname 'Reed' csurname, 'X' union resp. double all the

  Select 4 code, code_high, null, 'Tim' cname 'Hackman' csurname, 'X' union resp. double all the

  Select code 5, code_high 4, 'John', 'Reed' cname csurname resp null in union double all the

  Select 6 code, code_high 5, cname 'Bill', 'Hakcman' csurname, 'X' union resp. double all the

  Select the code 7, code_high 6, cname 'Fred' csurname 'White', null union resp. double all the

  Select code 8, code_high 7, 'Bill' cname 'Smith' csurname, resp. union null double all the

  Select 9 code, code_high 8, cname "Tom", "Reed" csurname, null double RESP

  )

  Select *.

  of mydata;

  CODE CODE_HIGH CNAME CSURNAME RESP

  ---------- ---------- ----- -------- ----

  John Smith 1 X

  2 1 bill White

  3 2 Fred Reed X

  4 Tim Hackman X

  5 4 John Reed

  6 5 bill Hakcman X

  7 6 Fred white

  8 7 bill Smith

  9 8 Tom Reed

  It is a hierarchical query where code_high represents the father.

  I need to find in the hierarchy of higher level responsible for each code.

  Suppose I want to find in the hierarchy, one with resp = 'X '.

  Run the following query I find for the code = 9

  Select phone, cname, csurname code

  of mydata

  When resp = 'X '.

  and rownum = 1

  Connect prior code_high = code

  start with code = 9;

  CODE CNAME CSURNAME

  ---------- ----- --------

  Bill 6 Hakcman

  Is there a way to get the full list with the loaded correspondents.

  The expected results are:

  CODE CODE_HIGH CNAME CSURNAME RESP. RESP_CODE RESP_NAME RESP_SURNAME

  ---------- ---------- ----- -------- ---- --------- --------- ------------

  1 John Smith John Smith 1 X

  2 1 bill White 1 John Smith

  3 2 Fred Reed X 3 Fred Reed

  Tim Hackman 4 X 4 Tim Hackman

  5 4 John Smith 4 Tim Hackman

  6 5 bill Hakcman Bill Hakcman 6 X

  7 6 Fred White 6 Bill Hakcman

  8 7 bill Smith 6 Bill Hakcman

  9 8 Tom Reed 6 Bill Hakcman

  Kind regards.

  Alberto

  Hi, Alberto.

  I know that you are using Oracle 9; That's why I mentioned that you would have to use a substitute for CONNECT_BY_ROOT.  Before I could show how, I saw the solution of the Padders, which is probably simpler and more efficient for this work.  Padders used REGEXP_SUBSTR, which is not available in Oracle 9, but you can use SUBSTR and INSTR instead.

  Here is the solution of the Padders for Orcle 9:

  WITH got_resp_path AS

  (

  SELECT m.*

  RTRIM (SYS_CONNECT_BY_PATH (CASE

  WHEN resp = 'X '.

  THEN the code

  END

  , ' '

  )

  ) AS resp_path

  OF mydata m

  START WITH code_high IS NULL

  CONNECT BY code_high = code PRIOR

  )

  C. SELECT

  r.code AS resp_code

  r.cname AS resp_name

  r.csurname AS resp_surname

  OF got_resp_path c

  JOIN mydata r ON r.code = TO_NUMBER (SUBSTR (c.resp_path

  INSTR (c.resp_path

  , ' '

  -1

  )

  )

  )

  ORDER BY c.code

  ;

  I agree that what you posted in your last post is not very satisfactory.  Rather than make a CONNECT a separate query for each column of resp_ you want to view, you can modify it to get only the unique code and then use it in a join, as Padders, to get all the other columns you need.

• Hierarchical data, how to aggregate over levels in hierarchical query?

  Hello
  
  I hope someone can help me.
  
  I held in a data table ("" what part was built in what other part of when when? "')
  ID parent_id build_in build_out
  1 NULL NULL NULL
  2/1 2010 2012
  3 2 2011 2013
  4 2 2013 NULL
  
  What are the parts is stored in a separate table.
  
  Now I want to know when when which part was built in the first level, in the example, I want to know that
  1 was simply a part of 1
  2 was part of 1 between 2010 and 2012
  3 was part of 1 between 2011 and 2012
  4 has never been a part of 1
  
  I tried several approaches - if there is a fixed number of levels between the types, I am interested I can do using joins and more/less (similarly as some nvl). Unfortunately this is not always the case (some parts appear on several levels).
  If I'm only interested in the parts that are never deleted, I can get by using a style of connect request and get the current configuration. But I can't seem to understand the time connecting part to the high level in such a query, or even filtering absurd combinations (like "4 in 1" in the example above). I could deal with the data recovered outside the database, but I prefer not.
  
  Is there a way to obtain the hierarchical data with an aggregate (min, max) for all levels?

  What version of Oracle you are on?

  In 11.2.x, you can use the recursive subquery factoring. Something like

  with t (id, parent_id, build_in, build_out) as (
  select 1, null, null, null from dual union all
  select 2, 1, 2010, 2012 from dual union all
  select 3, 2, 2011, 2013 from dual union all
  select 4, 2, 2013, null from dual
  )
  , c1 (root_id, id, parent_id, build_in, build_out) as (
  select id, id, parent_id, 0, 9999
  from t
  where parent_id is null
  union all
  select root_id, t.id, t.parent_id
  , greatest(nvl(t.build_in,0), nvl(b.build_in,0))
  , least(nvl(t.build_out,9999), nvl(b.build_out,9999))
  from c1 b, t
  where b.id = t.parent_id
  )
  select * from c1
  where build_in < build_out
  ;
  ROOT_ID ID    PARENT_ID  BUILD_IN  BUILD_OUT
  ------- ----- ---------- --------- ----------
  1       1                0         9999
  1       2     1          2010      2012
  1       3     2          2011      2012      
  

  With a hierarchical query by using the syntax connection, you could do something like

  select * from (
  select connect_by_root id as root, id
  , greatest(nvl(build_in,0), nvl(prior build_in,0)) as max_in, least(nvl(build_out,9999), nvl(prior build_out,9999)) as min_out
  from t
  start with parent_id is null
  connect by parent_id = prior id
  )
  where max_in < min_out
  ;
  

  but it is not powerful enough. This version compares the dates between a current and previous levels, but the recursive subquery is to compare the dates in the current level for the winners of the comparisons to the previous level. Not sure if it's an important distinction for your needs, however.

  If you are on 11.2 I advise to use the recursive subquery factoring. If this isn't the case, you can try the link by version.

  Kind regards
  Bob

• Problems with views based on a hierarchical query

  Datamodeler 3.1.3.706 (SQL Dev 3.2.10.09):
  
  When you create a view that uses a hierarchical query, the query designer encounter various difficulties:
  
  When pasting in the SQL code, if the notice is registered without first clicking the schema update button, the object in the entity-relationship diagram view provides a faithful representation of the view without errors, but when the reopening of the view, the code is missing.
  
  Simple example with the classic emp table:

  SELECT level lev
        , emp.*
     FROM emp
    CONNECT BY prior empno = mgr
    START WITH mgr        IS NULL

  If you press the schema update button to refresh the display. He mangles connect it by the clause and the view gets marked with a warning/error icon in the diagram of the relationships, but the now decomposed code remains available on reopening of the query designer.
  
  Same code as above after having clicked on the button of update of schema:

   SELECT Level lev
  , emp.*
     FROM emp
    CONNECT BY

  Other issues are met if the query contains a column CONNECT_BY_ % nickname hierarchical:

  SELECT level
        , emp.*
        , connect_by_root emp.ename root_ename
     FROM emp
    CONNECT BY prior empno = mgr
    START WITH mgr        IS NULL;

  In this case, paste in the code and clicking Update schema button or the OK button translates into a "unexpected Token' error analysis.
  
  These problems are encountered with the logic model and the relational.
  
  Is this a known issue? I searched this forum but have not found any references to this.
  
  Thank you
  
  Sentinel

  Hi, Sentinel,

  I logged a bug for this.
  You can try 3.3 DM treat it better first problem, analysis of connect_by_root operator will pass if you do not alias.

  Philippe

• A hierarchical query help

  I have two tables:
  
  The FOLDERS where the areas concerned are: folderId, parentFolderId, folderQuota
  and DOCUMENTS where the areas concerned are: folderId, size
  
  FILES is hierarchical - parentFolderId of the file of the child has the folderId of the parent value
  folderQuota the value null (undefined quota)
  
  
  Now, I need to run a query with the following recursive logic
  
  < i > function calcQuota (folderIdpar, isFirstpar) {}
  
  If (not isFirstpar) and (folderQuota of the folder with folderIdpar is not null) return folderQuota;
  Returns the size of all documents where folderId = folderIdpar + calcQuota (folderId of all children, false);
  
  } < /i >
  
  (I hope the pseudo-code is understandable - the query is executed as < i > calcQuota (originalFolderId, true) < /i >).
  
  Now, my question is if I can accomplish this with a single hierarchical query, or if I should implement as a recursive procedure stored.
  
  Thank you!
  
  P.S. I use Oracle XE (10g)

  Hello

  If you want to ignore the quotas at the level = 1:

  WITH     tree     AS
  (
       SELECT     folder_id
       ,     CASE
                 WHEN  LEVEL > 1
                 THEN  quota
            END                         AS effective_quota
       FROM     folders          f
       START WITH     folder_id          = :start_folder_id
       CONNECT BY     parent_folder_id     = PRIOR folder_id
            AND     (   PRIOR quota          IS NULL
                 OR  LEVEL          = 2
                 )
  )
  SELECT     :start_folder_id
  ,     SUM ( NVL ( t.effective_quota
              , d.document_size
              )
           )          AS total_size
  FROM     tree               t
  LEFT OUTER JOIN documents     d     ON     t.folder_id          = d.folder_id
                           AND     t.effective_quota     IS NULL
  ;
  

• [Oracle 8i] Need help of a hierarchical query pruning branches

  My problem is that my hierarchical query seems only to cut values that do not meet my criteria, but still includes their children. When my query hits a record that does not meet my criteria, I want it to stop there. I tried including the criteria in just the ' ' a where clause of the query and also put the criteria in clause "connect by" as well, but nothing has been set. Will you please keep in mind that I'm using Oracle 8i, so I can't use some of the "nice" statements for hierarchical queries that they introduced in 9. I'm stuck with "Start With... Connect in "."
  
  I have examples of tables/data I can post if someone needs to see to help me, but to start with, here my current query:
  

  SELECT     *
  FROM     (
            SELECT 
                 LEVEL
            ,     c_bill.comp_part_nbr                     AS     c_part_nbr
            ,     (select c_part.part_desc 
                 FROM part c_part 
                 WHERE c_part.part_nbr=c_bill.comp_part_nbr)     AS     c_part_desc
            ,     (SELECT c_part.part_type 
                 FROM part c_part 
                 WHERE c_part.part_nbr=c_bill.comp_part_nbr)      AS     c_part_type
            ,     c_bill.qty_per                          AS     c_qty_per_p
            ,     c_bill.qty_per_type                     AS     c_qty_per_type
            ,     (SELECT c_part.qty_on_hand                
                 FROM part c_part 
                 WHERE c_part.part_nbr=c_bill.comp_part_nbr)      AS     c_qty_on_hand
            ,     c_bill.oper_nbr                     AS     rqd_at_op
            ,     c_bill.comp_off_adj                     AS     rqd_offset
            ,     c_bill.bom_doc_nbr                     AS     p_part_nbr
            ,     (SELECT p_part.qty_on_hand 
                 FROM part p_part 
                 WHERE p_part.part_nbr=c_bill.bom_doc_nbr)      AS     p_qty_on_hand
            FROM 
                 BILL c_bill 
            WHERE 
                 (
                           (c_bill.status           =      'RL')           
                      AND     (c_bill.view_code     IN      ('M','G'))     
                      AND     (c_bill.end_eff_dt     >      SYSDATE)       
                      AND     (c_bill.begn_eff_dt     <=      SYSDATE)
                 ) 
            START WITH c_bill.bom_doc_nbr=RPAD(?,25)
            CONNECT BY PRIOR c_bill.comp_part_nbr=c_bill.bom_doc_nbr
            AND     c_bill.view_code     IN     ('M','G')     
            AND     c_bill.status          =     'RL'
            AND      c_bill.end_eff_dt     >     SYSDATE
            AND     c_bill.begn_eff_dt     <=     SYSDATE     
       ) a
  WHERE     c_part_type = 'M'

  Hello

  The criterion in the outer query

  c_part_type = 'M'
  

  applies only to the results; You can still get the descendants of these lines in the output. This seems to be the only thing that is not repeated in the CONNECT BY clause.

  If you don't want to repeat the criteria in the WHERE clause and the CONECT BY clause, you can apply them once in a view online.
  The following example works in Oracle 8.1:

  SELECT     LPAD ( ' '
            , 3 * (LEVEL - 1)
            ) || ename          AS iname
  ,     empno
  ,     mgr
  FROM     (     -- Begin in-line view of employees named C-Z
       SELECT     ename
       ,     empno
       ,     mgr
       FROM     scott.emp
       WHERE     ename     >= 'C'
       )     -- End in-line view of employees named C-Z
  START WITH     mgr    IS NULL
  CONNECT BY     mgr    = PRIOR     empno
  ;
  

  Not only is excluded BLAKE, but the descendants of JAMES BLAKE, MARTIN, etc. are excluded, too, without repeating the condition.

  Please, post CREATE TABLE and INSERT statements for some examples of data - just enough to show what is the problem - and the results desired from these data.