Disadvantages of Nested Tables with Examples

Hi
I want some practical examples of disadvantages of nested tables.
If any one can help me Please...
Bhaumik

Bhaumik,
Depending on the requirements of an application, Nested Tables may be better than Varrays. Please check out the online doc at http://otn.oracle.com/docs/products/oracle9i/doc_library/release2/appdev.920/a96594/adobjfaq.htm#1002811 to learn more.
Regards,
Geoff
Hi
I want some practical examples of disadvantages of nested tables.
If any one can help me Please...
Bhaumik

Similar Messages

Help in joining nested table with regular table

Im creating a nested table codelist as object prtcnpt_info. In a anonymous block im declaring t_code as nested table type codelist.
Now when i try to join the nested table with the regular oracle DB table and i get error: PL/SQL: ORA-00904: "COLUMN_VALUE": invalid identifier.
Please help me on this and provide tutorial link pertaining to this concepts..Below is the code i wrote
--Code Start;
create or replace type prtcnpt_info as object ( id number
,name varchar2(200)
,code varchar2(30));
create type codelist is table of prtcnpt_info;
declare
t_code codelist;
begin
select prtcnpt_info(b.pid ,b.name ,pt.code) bulk collect into t_code
from part pt
,mc_code b
where pt.cd in ('AAA','BBB')
and pt.ptype_id=b.pt_type_id;
INSERT INTO table ( ID
,RUN_ID
,DATA
,P_ID
SELECT id
     ,run_id
     ,data
     ,prtct.id ----> 1
FROM table_2 t2
,(select column_value from table(t_code)) prtct
WHERE prtct.id=t2.P_ID; ------> 2
end;
--Code End;
also from the anonymous block
1 => is this correct way to get value of id (b.pid) from the nested tablet_code aliased as prtct ?
2 => is this correct way to join the nested table with regular table? i want to join the column id's in both the tables.
Edited by: 914912 on Apr 30, 2012 2:11 AM

When you create a table type without an object, i.e. a single column type like this you will get the column name as COLUMN_VALUE.
SQL*Plus: Release 10.2.0.5.0 - Production on Mon Apr 30 07:38:32 2012
Copyright (c) 1982, 2010, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> create or replace type mytbl as table of varchar2(10)
2 /
Type created.
SQL> var rc refcursor
"afiedt.buf" 11 lines, 162 characters
1 declare
2     ltbl mytbl;
3 begin
4     select to_char(level) bulk collect into ltbl
5       from dual
6    connect by level <= 10;
7     open :rc for
8     select * from table(ltbl);
9* end;
10 /
PL/SQL procedure successfully completed.
SQL> print rc
COLUMN_VAL
1
2
3
4
5
6
7
8
9
10
10 rows selected.And when you create a table type with object you will get the object column name.
SQL> drop type mytbl
2 /
Type dropped.
SQL> create type myobj as object (id varchar2(10))
2 /
Type created.
SQL> create type mytbl as table of myobj
2 /
Type created.
SQL> declare
2     ltbl mytbl;
3 begin
4     select myobj(to_char(level)) bulk collect into ltbl
5       from dual
6    connect by level <= 10;
7     open :rc for
8     select * from table(ltbl);
9 end;
10 /
PL/SQL procedure successfully completed.
SQL> print rc
ID
1
2
3
4
5
6
7
8
9
10
10 rows selected.
SQL>

Help how to create full set of nested table with given xml schema?

Hi everyone, I am new to oracle and programming language. Recently I was asked to create nested table with given a complex xml schema. I knew that after the registration of xsd file, oracle will generate few tables( including nested table) and types for the users. But it seems to be not complete set of tables. Can anyone please help me with the problem. Really thanks a lot on the help given. I would like to give extra explanation if what I have given above is not clear enough. Thanks

How about posting the XML Schema, the code you used to register it, the database version you are using and the list of nested tables that were generated...

Loading Nested table with SQL Loader

We have 15 nested tables in an table. Need help in creating a contol file. Tried with the syntax of object collection and didn't work. Can any none share the syntax please.
-- Thanks,
Phani Adusumilli

Thanks Srini and Zoltan.
I am able to figure out, here is the example with one nested table.
CREATE OR REPLACE TYPE feature_count_type AS OBJECT (
feature_type VARCHAR2(60),
occurs INTEGER
CREATE OR REPLACE TYPE feature_count_ntbl
AS TABLE OF feature_count_type;
CREATE TABLE PHANI_ADUSUMILLI(
state VARCHAR2(2),
county VARCHAR2(20),
feature_count feature_count_ntbl
) NESTED TABLE feature_count
STORE AS nested_feature_count_table;
LOAD DATA
INFILE *
TRUNCATE INTO TABLE PHANI_ADUSUMILLI
county CHAR TERMINATED BY ',' ENCLOSED BY '"',
element_count FILLER INTEGER EXTERNAL TERMINATED BY ',',
feature_count NESTED TABLE COUNT(element_count)
     dummy_name COLUMN OBJECT
     feature_type CHAR TERMINATED BY ',',
     occurs INTEGER EXTERNAL TERMINATED BY ','
state CHAR TERMINATED BY ','
BEGINDATA
"Alger",5,lake,213,stream,88,falls,18,bay,11,island,5,MI
"Marquette",6,lake,293,stream,145,falls,5,bay,8,island,5,summit,23,MI
"Keweenaw",3,lake,86,falls,1,summit,16,MI

Using nested tables with User Defıned Types.....

Hi All,
I defined TEST_1 User Defined Type where VALUE_PART field is a VARCHAR2 type.
CREATE TYPE TEST_1 AS OBJECT (
               x NUMBER,
               y NUMBER,
     VALUE_PART VARCHAR2(50)
This TEST_1 object type will be used as nested tables in the EMPLOYEE table where each attribute might require different bytes of VARCHAR2’s in the VALUE_PART field.
CREATE TYPE NAME AS TABLE OF TEST_1;
CREATE TYPE ADDRESS AS TABLE OF TEST_1;
CREATE TYPE DEPARTMENT AS TABLE OF TEST_1;
CREATE TABLE EMPLOYEE (
SSN NUMBER,
NAME TEST_1,
ADDRESS TEST_1,
DEPARTMENT TEST_1,
SALARY NUMBER
NESTED TABLE NAME STORE AS NAME_TABLE;
NESTED TABLE ADDRESS STORE AS ADDRESS_TABLE;
NESTED TABLE DEPARTMENT STORE AS DEPARTMENT_TABLE;
Is it possible to specify VALUE_PART(50) in the TABLE OF statement?
Is there any way to do that throught methods or some other ways that I may not be aware of?
For Example:
/*This should allocate 10 bytes of VARCHAR2. */
CREATE TYPE NAME AS TABLE OF TEST_1(10);
/* and 30 bytes of VARCHAR2. */
CREATE TYPE ADDRESS AS TABLE OF TEST_1(30);
/*and 10 bytes of VARCHAR2. */
CREATE TYPE DEPARTMENT AS TABLE OF TEST_1(10);
Any help is appreciated.
Thanks a lot.

Hi,
We can not specify VALUE_PART(50) in the TABLE OF statement.
Regards,
Sailaja

How to update Nested tables with xsu

Hello,
I have three tables.
1) DEPARTMENT_TAB
2) EMPLOYEE_TYP
3) ADDRESS_TYP
ADDRESS_TYP is a collection and it is nested inside EMPLOYEE_TYP.
EMPLOYEE_TYP is a collection and it is nested inside DEPARTMENT_TAB.
created with below scropt
CREATE TYPE ADDRESS_TYP AS OBJECT (CITY VARCHAR2(10), STATE VARCHAR2(2));
CREATE TYPE ADDRESS_TYP_NT AS TABLE OF ADDRESS_TYP;
CREATE TYPE EMPLOYEE_TYP AS OBJECT (EMPNO NUMBER(4), ENAME VARCHAR2(10), ADDRESS_VAR ADDRESS_TYP_NT);
CREATE TYPE EMPLOYEE_TYP_NT AS TABLE OF EMPLOYEE_TYP;
CREATE TABLE DEPARTMENT_TAB (DEPTNO NUMBER(4), DNAME VARCHAR2(10), EMPLOYEE_VAR EMPLOYEE_TYP_NT)
NESTED TABLE EMPLOYEE_VAR STORE AS EMPLOYEE_TAB
( NESTED TABLE ADDRESS_VAR STORE AS ADDRESS_TAB);
I inserted two rows in DEPARTMENT_TAB and their nested tables using normalsql. and i generated below xml content using XSU java API
oracle.xml.sql.query.OracleXMLQuery
My Question is How to UPDATE a row in ADDRESS_TAB using XSU java API
oracle.xml.sql.dml.OracleXMLSave.
(When i was trying to update address_tab nested table's row with xml input file. it is deleting other existing rows)
Thanks.

Why do you say it does not work?

How to join PLSQL nested table with normal tables ?

my requirement is to delete the rows in a normal oracle table in one statement, based on the values collected in a PL/SQL nested table which is filled by another program.
In the following example, i need to delete the rows in
the table c_journals where the columns branch_code and
id are having values which exist in the PL/SQL
nested table's columns a and b respectively
declare
type test_type IS RECORD (a VARCHAR2(20), b number(20));
type test_table is table of test_type index by binary_integer;
test_object test_table;
cnt number;
begin
test_object(1).a := '1000';
test_object(1).b := 1;
test_object(2).a := '1006';
test_object(2).b := 4;
/* to be completed */
delete c_journals where ....
end;
Is this possible in Oracle ? Iam using the version 9iR2
Thanks in advance

Both of the following delete statements should work. For the second the two types need to be created as database objects.
declare
type test_type IS RECORD (a VARCHAR2(20), b number(20));
type test_table is table of test_type index by binary_integer;
test_object test_table; -- := test_table(test_type('1000',1), test_type('1006',4));
cnt number;
begin
test_object(1).a := '1000';
test_object(1).b := 1;
test_object(2).a := '1006';
test_object(2).b := 4;
for i in test_object.first .. test_object.last loop
    delete from c_journals cj
    where test_object(i).a = cj.branch_code
     and test_object(i).b = cj.id;
end loop;
end;
create or replace type test_type IS object (a VARCHAR2(20), b number(20));
create or replace type test_table is table of test_type;
declare
test_object test_table := test_table(test_type('1000',1), test_type('1006',4));
cnt number;
begin
delete from c_journals cj
where exists (select 'x' from table(cast(test_object as test_table)) t
     where cj.branch_code = t.a and cj.id = t.b);
end;
/

Querying Nested Tables with Multiple other Tables

I am trying to query columns from a table and it's nested table and do a join to another table.
SELECT IM.*,
IMP.PROGRAM_ID,
S.STAGE_NAME
FROM TB_ITEM_MASTER IM , TABLE(TB_ITEM_MASTER.PROGRAMS) IMP, TB_STAGE S
WHERE S.STAGE_ID = IM.STAGE_ID
AND IM.PROGRAM_ID IN(1,2);
When running this query I receive the error:
ORA-00904:"TB_ITEM_MASTER"."PROGRAMS": Invalid Identifier
I actually copied this query straight from an Oracle Documentation, just replaced my table names with theirs. This query will almost be like a template to me as the program_id field in the Nested table is very cruicial to me. I will joining many tables to TB_ITEM_MASTER and using the where clause against program_id. What's the problem here?
Please advise.
ps. Did I mention how much I hate working with this Nested table stuff:(

You must use the alias name, not the table name.
SQL> create type employee_obj as object (empno number) ;
2 /
Type created.
SQL> create type employees_nt is table of employee_obj ;
2 /
Type created.
SQL> create table departments (deptno number(2), dname varchar2(20), employees employees_nt)
2 nested table employees store as employees_table
3 /
Table created.
SQL> insert into departments values (1, 'DEPT #1', employees_nt(employee_obj(2), employee_obj(3))) ;
1 row created.
SQL> insert into departments values (22, 'DEPT #2', employees_nt(employee_obj(22), employee_obj(33))) ;
1 row created.
SQL>
SQL> SELECT IM.*,
2 IMP.empno
3 FROM departments IM , TABLE(IM.employees) IMP
4 WHERE IM.deptno IN(1,2);
    DEPTNO DNAME
EMPLOYEES(EMPNO)
     EMPNO
         1 DEPT #1
EMPLOYEES_NT(EMPLOYEE_OBJ(2), EMPLOYEE_OBJ(3))
         2
         1 DEPT #1
EMPLOYEES_NT(EMPLOYEE_OBJ(2), EMPLOYEE_OBJ(3))
         3
2 rows selected.
SQL>

How to use nested tables with the inner table in a separate row

Hi,
I am having a problem when changing our existing Adobe printform delivery note so that serial numbers are written for each item line.
I've searched the forum and found many posts relating to nested tables, but none that had exactly my situation.
Currently I print item lines like this (this uses the complete width of the form):
Pos....Quantity...Material..........Description..................................................Date
99.........99.........ABCDEFGH....alksdalksjdlkasjdlsajdlkjasldjaslkdjakslj........9999.99.99
.................................................fskdjflsdfljsdflkjsdlkfjsdlkjfdfsf
.................................................asdkadsfdkfhsdkfhskjdfhks
but I want to add serial numbers after that for each item like this:
Pos....Quantity...Material..........Description...................................................Date
99.........99.........ABCDEFGH....alksdalksjdlkasjdlsajdlkjasldjaslkdjakslj.........9999.99.99
.................................................fskdjflsdfljsdflkjsdlkfjsdlkjfdfsf
.................................................asdkadsfdkfhsdkfhskjdfhks
.................................................Serial numbers:
.................................................9999999999..9999999999..9999999999
.................................................9999999999..9999999999..9999999999
I have added serial numbers to my the current table in the interface/context/data view so it look like this:
TTYP - ITEM_FIELDS
...DATA structure
......POSNR
......QTY
......MATNR
......TTYP - ITEM_TEXTS
.........DATA structure
............DESCRIPTION
......DATE
......TTYP - SERIAL_NOS
.........DATA structure
............SERIAL_COL1
............SERIAL_COL2
............SERIAL_COL3
In my Hierarchy I currently have this hierarchy and binding:
Table - ITEM_FIELDS
...Body Row - DATA
......Cell - POSNR
......Cell - QTY
......Cell - MATNR
......Subform - ItemTexts
.........Table - ITEM_TEXTS
............Body Row - DATA
...............Cell - DESCRIPTION
......Cell - DATE
Now I am trying to add the SERIAL_NOS table into the ITEM_FIELDS/DATA body row right after the DATE cell - but I am not allowed to drag anything into the table structure.
Does anybody have an ida how I can achieve this, please?
Kind regards,
Claus Christensen

HI,
Set the body page as flowed and set the tables also flowed.
go to bodypage>object->subform-->select flowed option.
I thihnk this will work..if u are getting all the records properly into the tables 1 and 2.
Thanks,
Mahdukar

Nested Tables with Object Types

Hi,
Does someone know from which version on object Types can be referenced via database links ?
I could not manage with Oracle 8.1.7 and needed this features as the only way to access
a stored procedure array is via collection and using Object Types.
But Object Types are not possible to access remotlely.
Thanks in advance.
brg robert

Click on the link below and see if you can use that method as a way to work around the problem:
http://asktom.oracle.com/pls/ask/f?p=4950:8:::::F4950_P8_DISPLAYID:1252400357305

Nested tables won't allign with primary table

Hello all. It looks like I’m faced with another
table-related obstacle. While I was creating one of my inner pages,
I’ve utilized nested tables to create a column on the left
hand side of the page that will hold my secondary menu, while the
other column will hold a flash element and page content.
Although I’ve inserted all nested tables with
“0” cell spacing and “0” cell padding, and
the visual aids seem to suggest that the values of the nested table
are identical with the primary table that holds them, the nested
table that will hold the movie and page content isn’t flush
with the table above. It seems to be off only by 1-2 pixels or so,
but since there will be an image right underneath the menu this is
quite obvious.
I have attached the code for your information (line 165,
166).
Thank you for your time and suggestions. I really appreciate
it.

On Sat, 16 Sep 2006 15:06:50 +0000 (UTC), "HTML-Newbie"
<[email protected]> wrote:
> Check out the link
http://www.fastventures.com/dev/test_temp_2col.html
and you
>will see that the picture underneath the main menu won't
line up with it on the
>right-hand side.
Change this:
<table width="572" border="0" cellspacing="0"
cellpadding="0">
<tr>
<td height="200" valign="top"><img
src="img/place_second.jpg" width="572"
height="200"></td>
</tr>
To this:
<table width="572" border="0" cellspacing="0"
cellpadding="0"
align="right">
<tr>
<td height="200" valign="top"><img
src="img/place_second.jpg" width="572"
height="200"></td>
</tr>
Gary

Fixed length outer table with nested repeating group inner table.

I had to re-create a PDF using tables in an RTF template. It has a fixed 1 page width. However, one of the rows in the template has a nested table with a repeating group. I set the width of the outer table row width to 2". However when I have repeating groups it makes the outer row grow wider than the 2" inches. The option to un-select "automatically resize to fit contents" is grayed out.
Is there a way to keep the outer table width fixed with an inner repeating group?
Thanks.
--Johnnie
Edited by: Vortex13 on Jun 13, 2012 11:15 AM

Hi Borris,
Found the following in the Oracle Documentation under: Oracle8i Application Developer's Guide - Object-Relational Features Release 2 (8.1.6)
2 Managing Oracle Objects / Using Collections / Collection Unnesting
URL: http://www.znow.com/sales/oracle/appdev.816/a76976/adobjmng.htm#1002885
Oracle8i also supports the following syntax to produce outer-join results:
SELECT d.*, e.* FROM depts d, TABLE(d.emps)(+) e;
The (+) indicates that the dependent join between DEPTS and D.EMPS should be NULL-augmented. That is, there > will be rows of DEPTS in the output for which D.EMPS is NULL or empty, with NULL values for columns
corresponding to D.EMPS.

Varray, Nested Table and Object types in OWB r2

Requirement:
Flat file with repeating groups of nested content need to move into Object Relational ORACLE table (using varray or nested tables - no preference). The data will be loaded, then mapped/transformed into a richer O-R output to directly produce XML outputs.
Problem:
Generated PL/SQL "seems" to do the correct thing, but deployment errors show failures on mapping of collections (varrays, NTs or OTs) and in sqlplus recompiling the PKB still gives the errors. Is this a PL/SQL generator error, or is there a more meaningful example of using CONSTRUCT OBJECT operator than the embedded odcumentation - it is a simple type (single instance) and not a variable repeating group of nested data.
Anyone had any success with these, or know of any collateral to assist in the process. Thanks.

The process we are following is very simple. We are talking 10 columns from a source flat file table and wish to map this into a Varray/Nested table, with one column of Varchar2(10).
When you create your map in OWB, select the construct object, you have to choose an object type - it does not allow you to select a VARAAY or NESTED table.
I have then created an object defined in the same structure as the VARRAY/NESTED table - I have then made the VARRAY/NESTED table of this TYPE.
Example:
CREATE OR REPLACE TYPE "O_REL_PUB_INDEX" AS OBJECT (
X_REL_PUB_INDEX_1 VARCHAR2(10))
CREATE OR REPLACE TYPE "V_REL_PUB_INDEX" AS VARRAY(15) OF O_REL_PUB_INDEX
In OWB you can then select O_REL_PUB_INDEX when creating the 'Contruct Object'.
The problem I have is that when I map to my target column of type V_REL_PUB_INDEX and DEPLOY my map I get the following errors taken from OWB control centre
Name
Action
Status
Log
TEST
Create
Warning
ORA-06550: line 2931, column 9:
PL/SQL: SQL Statement ignored
TEST
Create
Warning
ORA-06550: line 3174, column 11:
PL/SQL: ORA-00932: inconsistent datatypes: expected OWB_USER.O_REL_PUB_INDEX got OWB_USER.V_REL_PUB_INDEX
TEST
Create
Warning
ORA-06550: line 401, column 7:
PL/SQL: SQL Statement ignored
TEST
Create
Warning
ORA-06550: line 643, column 13:
PL/SQL: ORA-00932: inconsistent datatypes: expected OWB_USER.O_REL_PUB_INDEX got OWB_USER.V_REL_PUB_INDEX
TEST
Create
Warning
ORA-06550: line 7221, column 9:
PL/SQL: SQL Statement ignored
TEST
Create
Warning
ORA-06550: line 7464, column 11:
PL/SQL: ORA-00932: inconsistent datatypes: expected OWB_USER.O_REL_PUB_INDEX got OWB_USER.V_REL_PUB_INDEX
Any ideas? anyone succesfully mapped to either a VARRAY or an NESTED TABLE target column?

Detail Reveal/Nested Table Questions

Hey Folks,
I have a table that was generated with Jheadstart. Within this table is a nested table with a master-detail relationship to the outer table. It was generated using the 'Detail Reveal' function of Jheadstart, so it renders a 'show' hyperlink to show the associated details with the master record. The problem I am having is when the user navigates back to this page, the detail reveal is not working properly. Say the user shows the a set of details, click continue, decided they selected they wrong set, hits cancel. The cancel does a rollback then navigates back to the nested table page. What happens is this: the FIRST set of details is always shown, except under the master record that was originally selected! If the user shows then hides the details, the problem goes away. So for example, if the user had originally shown the details of the third master record, hit continue, then hit cancel, the details from the first master record would be incorrectly shown under the third master record.
What is causing this? How can I fix this? Ideally I would like to have it HIDE all detail when the user cancels back to the page.
I did some snooping around in the JHSDataAction class, and it looks like a request param named 'value' determines which detail is shown, but I have been unsuccessful in trying to manipulate this parameter to get it to do what I want.
Also, how could I manipulate it to show all the details if the master table only had one record? I already have a dataAction that determines if the master query returned a single hit or not, I just don't know what I can do with the request object to force it to show the detail lines in the case that it does....
Help?
Thanks,
-Chris

Oh yea, and i'm using Jdev 10.1.2 and Jheadstart 10.1.2.2 (build 32), using struts and UIX.

Using nested tables

Hi experts,
is there a way of using nested tables, for example:
Field1
---value1-1
------example1-1
------example1-2
------example1-3
---value1-2
------example2-1
------example2-2
------example2-3
------example2-4
------example2-5
---value1-3
------example3-1
------example3-2
Field2
---value2-1
------example1-1
------example1-2
Or isn't it possible?
Thanks
Michael

Hi,
Nested table is not allowed but if it is property structure like address etc which can be included in more than one entities then you can use complex type Complex Types - SAP NetWeaver Gateway Foundation (SAP_GWFND) - SAP Library
you can refer this Odata Services with Complex Types and Netweaver Gateway : Multiple Output Tables : Odata | SCN
Regards,
Chandra

Disadvantages of Nested Tables with Examples

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