What is Varray,Nested tables,Collections,Pragma?
Hi,
what is Varray,Nested tables,Collections,Pragma?
and in Which Situations will We Use this?.
Anyone having any dea regarding this?
http://download-west.oracle.com/docs/cd/B10501_01/appdev.920/a96624/05_colls.htm
http://awads.net/wp/2006/03/01/pragmatism-in-oracle-plsqlKhurram
Similar Messages
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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? -
Using sql functions (min, max, avg) on varray or table collection
Hi,
I would like to know if there is a way to use sql function or oracle sql function like Min,Max, Avg or percentile_cont on varray or table collection ?
Does anyone encountered this type of problem ?
ThanksYes you can apply Min,Max, Avg... if varray or table collection type is SQL (created in the databaase) UDF, not PL/SQL declared type:
SQL> set serveroutput on
SQL> declare
2 type str_tbl_type is table of varchar2(4000);
3 str_tbl str_tbl_type := str_tbl_type('X','A','D','ZZZ');
4 max_val varchar2(4000);
5 begin
6 select max(column_value)
7 into max_val
8 from table(str_tbl);
9 dbms_output.put_line('Max value is "' || max_val || '"');
10 end;
11 /
from table(str_tbl);
ERROR at line 8:
ORA-06550: line 8, column 18:
PLS-00642: local collection types not allowed in SQL statements
ORA-06550: line 8, column 12:
PL/SQL: ORA-22905: cannot access rows from a non-nested table item
ORA-06550: line 6, column 5:
PL/SQL: SQL Statement ignored
SQL> create or replace type str_tbl_type is table of varchar2(4000);
2 /
Type created.
SQL> declare
2 str_tbl str_tbl_type := str_tbl_type('X','A','D','ZZZ');
3 max_val varchar2(4000);
4 begin
5 select max(column_value)
6 into max_val
7 from table(str_tbl);
8 dbms_output.put_line('Max value is "' || max_val || '"');
9 end;
10 /
Max value is "ZZZ"
PL/SQL procedure successfully completed.
SQL> SY. -
Dear Friends,
How varray & Nested table working internally in oracle.?
When & Why to use varray & nested table.?
Which is the faster from both of them.?
Thanks.Hmm, mysterious. It works for me on my 9.2.0.6 dB...
SQL> CREATE OR REPLACE TYPE TY_BOOKS AS OBJECT( VC_BOOK_NAME VARCHAR2(64) );
2 /
Type created.
SQL> CREATE OR REPLACE TYPE NT_TY_BOOKS AS TABLE OF TY_BOOKS;
2 /
Type created.
SQL> CREATE TABLE STUDENT
2 ( SID NUMBER(10),
3 CL_NT_BOOKS NT_TY_BOOKS)
4 NESTED TABLE CL_NT_BOOKS STORE AS CL_NT_BOOKS_TAB;
Table created.
SQL> INSERT INTO student VALUES (1000, NT_TY_BOOKS(TY_BOOKS('Science')))
2 /
1 row created.
SQL> INSERT INTO student VALUES (1001, NT_TY_BOOKS(TY_BOOKS('Science'),TY_BOOKS('Maths')))
2 /
1 row created.
SQL>
SQL> SELECT S.SID,B.VC_BOOK_NAME FROM STUDENT S, TABLE(CL_NT_BOOKS) B
2 WHERE B.VC_BOOK_NAME='Science'
3 /
SID VC_BOOK_NAME
1000 Science
1001 Science
SQL> What I suggest is most likely to have happened is that you have added a space or some other non-printing cahracter into the book name when you inserted row 1001. If this is not the case then you'll have to do it again in SQL*Plus, cut teh output and paste it here, so we can see what's going on.
Cheers, APC -
Nested table collection in select query "in clause" taking long time
create or replace type t_circuitids is table of varchar2(100);
--Below anonymous block keeps on running and never ends
DECLARE
v_circuitid t_circuitids;
v_count number;
l_circuitids VARCHAR2 (4000)
:= 'value1,value2,value3,value4,value5';
BEGIN
--Below query converts comma concatinated output to list and stores in nested table collection v_circuitids
WITH a AS
(SELECT ',' || l_circuitids || ',' AS circuitid
FROM DUAL)
SELECT DISTINCT TRIM (SUBSTR (circuitid,
INSTR (circuitid, ',', 1, LEVEL) + 1,
INSTR (circuitid, ',', 1, LEVEL + 1)
- INSTR (circuitid, ',', 1, LEVEL)
- 1
) cid
BULK COLLECT INTO v_circuitid
FROM a
CONNECT BY LEVEL <
LENGTH (circuitid)
- LENGTH (REPLACE (circuitid, ','));
SELECT COUNT (1)
INTO v_count
FROM table
WHERE name IN (SELECT COLUMN_VALUE
FROM TABLE (v_circuitid));
END;
--I got the issue, query "SELECT COLUMN_VALUE FROM TABLE (v_circuitid)" which is used in above code is responsible for this.
--Same code works fine in Development and Test environments, But in prod it keeps on running
--I solved this issue by creating a temp table, loading all values in collection into the temp table and using that temp table in "in clause" "
--Can any one answer why its behaving like this when i use collection in where clause?
--I am using Oracle 9iBelow is the code i used
DECLARE
v_circuitid t_circuitids;
v_count number;
l_circuitids VARCHAR2 (4000)
:= 'value1,value2,value3,value4,value5';
BEGIN
--Below query converts comma concatinated output to list and stores in nested table collection v_circuitids
WITH a AS
(SELECT ',' || l_circuitids || ',' AS circuitid
FROM DUAL)
SELECT DISTINCT TRIM (SUBSTR (circuitid,
INSTR (circuitid, ',', 1, LEVEL) + 1,
INSTR (circuitid, ',', 1, LEVEL + 1)
- INSTR (circuitid, ',', 1, LEVEL)
- 1
) cid
BULK COLLECT INTO v_circuitid
FROM a
CONNECT BY LEVEL <
LENGTH (circuitid)
- LENGTH (REPLACE (circuitid, ','));
SELECT COUNT (1)
INTO v_count
FROM table
WHERE name IN (SELECT COLUMN_VALUE
FROM TABLE (ccard(v_circuitid)));
END;
And got below error
ORA-06550: line 27, column 5:
PL/SQL: ORA-00906: missing left parenthesis
ORA-06550: line 24, column 4:
PL/SQL: SQL Statement ignored -
Query Nested table (collection)
I try to query on a nested table (collection).
How ever, I get a 600 error.
Is there any way to reuse the result of query in the store procedure?
SQL> DECLARE
2 TYPE T_PER_ID IS TABLE OF PERIOD.PER_ID%TYPE;
3 V_EXP_PER_ID T_PER_ID;
4 V_EXP_PER_ID2 T_PER_ID;
5 BEGIN
6 SELECT PER_ID BULK COLLECT INTO V_EXP_PER_ID FROM PERIOD;
7 SELECT * BULK COLLECT INTO V_EXP_PER_ID2 FROM TABLE(V_EXP_PER_ID);
8 END;
9 /
DECLARE
ERROR at line 1:
ORA-00600: internal error code, arguments: [15419], [severe error during PL/SQL
execution], [], [], [], [], [], []
ORA-06544: PL/SQL: internal error, arguments: [pfrrun.c:pfrbnd1()], [], [], [],
ORA-06553: PLS-801: internal error [0]Oracle Version 8.1.6
-
Varrays/Nested tables/temp tables
Within my PL/SQL code, which I eventually will turn into stored procedure, I want to use Varrays, or Nested tables, or temp tables, whatever is the most suitable.
Right now I am using dbms_output.put_line() just to display list of 1 column values. Further, I need to use this list in Where ... In (my list ) of other query.
Prior to Oracle, I worked with SQL Server and I have always used temp table in such situations. But in Oracle it does not seem like good solution.
Could please someone explain me what object should I use in this situation, and what's more important, code examples how to assign values to it, and how to apply Select against this object.
Thanks.create or replace type ttab_object_type is table of varchar2(18);
show errors
declare
type ttab_object_name is table of user_objects.object_name%type index by binary_integer;
tab_object_name ttab_object_name;
tab_object_type ttab_object_type;
begin
tab_object_type := ttab_object_type('TABLE', 'INDEX');
select object_name
bulk collect into tab_object_name
from user_objects
where object_type in (select * from table(tab_object_type));
for i in 1.. tab_object_name.count loop
dbms_output.put_line(tab_object_name(i));
end loop;
end;
Richard -
Query hangs using db link and nested table collection
Hi,
I have a stored procedure which takes, as input, a string of values that can vary in length. The input is used as an IN operator within the queries that exist within the proc:
Code:
PROCEDURE get_contacts (i_customerids IN VARCHAR2)
an example of the input would be: '987451',412897' or '7541256','75412','95412589'
In order to process the dynamic "In-List", I created a custom collection type to convert the string to a table:
Code:
CREATE OR REPLACE
TYPE stringtotable AS TABLE OF VARCHAR2(3900)
(I've also tried the solutions on http://tkyte.blogspot.com/2006/06/varying-in-lists.html and http://fdegrelle.over-blog.com/article-1694534-6.html for handling dynamic in-lists and they also hang)
The proc contains 2 queries, the first returns records from a table within the current database:
Code:
SELECT *
FROM contacts
WHERE customer_id IN (
SELECT *
FROM TABLE (stringtotable (i_customerids
The second query returns records from a database that is defined via a db link:
Code:
SELECT b.customer_id, a.row_id, a.fst_name, a.last_name
FROM userlist.customers@uldblink a, userlist.firms@ulbdlink b
WHERE a.parent_id = b.row_id
AND b.customer_id IN (
SELECT *
FROM TABLE (stringtotable (i_customerids
The first query is executing without issue. The second query, however, is hanging indefinitely. Additionally, If I hard code the string in the IN operator, the second query executes without issue.
I am not the DBA for the database, so I don't currently have access to the trace logs. I've requested access to the trace logs to see if I can figure out what is hanging.
In the meantime, I was hoping someone would be able to tell me if
a: there is a better way to handle "dynamic in- lists".
or
b: if there is something obvious that I'm not considering.
Thanks for your help,
Fielding
Message was edited by:
fwilsonHi Todd,
Thanks for the suggestion. I was not aware of the cardinality hint.
I tried adding it to my query but unfortunately the query still appeared to hang. It did get me thinking though... that maybe the stringtotable collection type is creating the table in memory, and therefore its records aren't accessible to the dblink
so I inserted the values that were being returned via the stringtotable collection type into a physical table named TestTable. I then modified my query to select the values from TestTable.
Code:
...in (select /*+ cardinality(t 3) */ t.*
from testtable t)
This worked.
So that poses the questions-
a: is my assumption about the in-memory table correct
and
b: if so is there a way around it?
Thanks for your help -
I ve been using nested tables ( with the 'index by' clause ).
I understand that the created array is stored in the RAM memory ( and not in the database files ).
1. Does this mean that my program might not run one day when the machine is running low on RAM ?
2. If yes, will there be an exception or something ?
3. I understand that the memory is freed when the 'session ends'. When does my session end ? ( Is it when my PROCEDURE/function ends or is it when I quit sqlplus )
4. Are nested tables/collections thread safe ?
If I declare a nested table within the procedure, and if the procedure is called simultaneously by two clients, will there be a problem ?
Thanks1. Yes
2. Yes, possibly "PLS-00996: out of memory" although there may be others
3. PL/SQL does garbage collection at various times, including when your session ends (i.e. when you disconnect from Oracle) and when a variable goes out of scope (e.g. when a procedure ends). I don't think the full list of rules is documented.
4. Yes, although I'm not sure what happens in connection pooling. -
Nested Tables and Business Components
Hi,
We have developed a paradigm whereby all of our tables are of object types. In one example we haveL
create type addresslines_nt as table of varchar2(30);
We have another type:
create type address_ot as object(
lines addresslines_nt );
We create the TABLE off of address_ot with a nested table (store as) off LINES.
CREATE TABLE ADDRESS of ADDRESS_OT ....
In JDeveloper we want to create BUSINESS COMPONENTS and can not find a way for it (JDeveloper) to create a matching component for ADDRESS (the table) without it dropping a reference to the LINES property?
HELP!
DaveBC4J version 3.2.x only supports VARRAY collection types.
BC4J 9i (which will come with JDeveloper 9i when it's release) supports both VARRAY and TABLE collection types. -
Associative Array to Nested Table: Anything faster?
(First Post! Some ASP.NET references, but I think this really is a PL/SQL question)
I work on a team that runs an Oracle instance for data warehousing and reporting along with an ASP.NET based website for display.
Sometimes, I may want to have many parameters come in and only show records that match those parameters. For example, I may want to show all employees who are Managers or Developers and not show employees who are Accountants or Scientists. Typically, I send a parameter into my PL/SQL stored procedures as an associative array (as declared in my package specification). Once in the procedure, I convert that associative array into another associative array (as a user created SQL type) and then I'm able to use it like a nested table to join on.
My question is: in your experience, is there any way to get around this type conversion or another faster way?
For example:
-- Create the sql type
CREATE OR REPLACE TYPE DIM.sql_string_table AS TABLE OF VARCHAR2(255);
--pretend that this works and it's in a package body
declare
type string_table is table of varchar2(255) index by binary_integer;
l_job_types string_table; -- Keep in mind I'd normally be sending this via ASP.NET
l_job_types_nested sql_string_table := sql_string_table();
begin
-- Add some data
l_job_types(0) := 'Manager';
l_job_types(1) := 'Developer';
-- Do the conversion
for i in l_job_types.first .. l_job_types.last
loop
l_job_types_nested.extend;
l_job_types_nested(l_job_types_nested.count) := l_job_types(i);
end loop;
-- get some data out (we're pretending)
open fake_ref_cursor for
Select e.*
from employees e,
the(select cast(l_job_types_nested as sql_string_table) from dual) jobs_types_wanted
where e.type = value(jobs_types_wanted);
end;
The result would be all employees whose have a type that was input into the l_job_types associatve array.
See: http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:110612348061
for additional reference> I convert that associative array into another associative array (as a user created SQL type)
Just so we're clear, Oracle use the term 'associative array' to refer to the exclusively PL/SQL sparse collection type ("table of x index by pls_integer" etc) as distinct from the common nested table collection type.
Also I could be wrong but I think
SELECT ..
FROM the(select cast(l_job_types_nested as sql_string_table) from dual) jobs_types_wantedis generally the same as
SELECT ..
FROM TABLE(l_job_types_nested) jobs_types_wantedthough "SELECT *" and implicitly collection casting don't always mix. The "THE()" syntax is deprecated. -
I am trying to make a nested table receive an arbitrary number of values (from a shuttle) through a loop, and then insert the table into a table of nested table in my database. The problem I am having is that when I try to insert more than one value into the nested table, it will only insert the last item in the loop into the database. Thanks in advance.
This is the code I used to create my objects:
create or replace type OUTPUT_TY as object( ATTRIBUTE_ID Number(8) )
create or replace type OUTPUTS_NT as table of OUTPUT_TY
This is my actual code in ApEx:
declare
temp_NT OUTPUTS_NT;
temp_TY OUTPUT_TY;
temp Number(10);
l_vc_arr2 htmldb_application_global.vc_arr2;
begin
temp_nt := outputs_nt();
l_vc_arr2 := HTMLDB_UTIL.string_to_table (:P2_SHUTTLE, ':');
FOR i IN 1 .. l_vc_arr2.COUNT
LOOP
temp_ty := output_ty(l_vc_arr2(i)) ;
temp_NT:= outputs_nt(temp_ty);
END LOOP;
INSERT INTO OUTPUT_TEST values (temp_NT);
commit;
end;> temp_NT:= outputs_nt (temp_ty);You are not extending the nested table / collection, you are simply assigning an entirely new collection to it for each element of l_vc_arr2.
Try something like...
FOR i IN 1 .. l_vc_arr2.COUNT LOOP
temp_ty := output_ty (l_vc_arr2 (i));
temp_nt.EXTEND;
temp_nt (temp_nt.LAST) := temp_ty;
END LOOP;Or perhaps more succintly...
FOR i IN 1 .. l_vc_arr2.COUNT LOOP
temp_nt.EXTEND;
temp_nt (temp_nt.LAST) := output_ty (l_vc_arr2 (i));
END LOOP; -
hi friends,
i have a question:
why do we use nested tables and varrays?Read the following and try to understand the examples. Try to relate them to various situations or scenarios where you can implement them. You will understand the benefits.
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14261/collections.htm#LNPLS005
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14261/tuning.htm#LNPLS01205 -
Error in bulk collect into nested table
I keep getting an error while trying to compile this line:
fetch c_juros bulk collect into wrk_juros_plano(p_ind_segreg);
LINE/COL ERROR
0/0 PLS-00801: internal error [74306]When i put that single line into comments it goes fine. Sure it doesn't do what I want.
The data structure i use is as follows:
cursor c_juros(p_ind_segreg in varchar2) is
select (((power(1 + (i.prc_juros_atuari_ano / 100), 1 / 12) - 1) * 100) / 100) prc_juros_efetiv_mes,
i.dat_inic_vigenc,
(nvl(i.dat_fim_vigenc, sysdate) + 1) dat_fim_vigenc,
i.ind_segreg
from v_indexador_taxa_atuarial i
where i.ind_segreg = p_ind_segreg
order by i.dat_inic_vigenc;
type t_juros_plano is table of c_juros%rowtype;
type t_tab_juros_plano is table of t_juros_plano index by binary_integer;
wrk_juros_plano t_tab_juros_plano;the code goes like this:
begin
if not(wrk_juros_plano.exists(p_ind_segreg))
then
if c_juros%isopen
then
close c_juros;
end if;
open c_juros(p_ind_segreg);
wrk_juros_plano(p_ind_segreg) := t_juros_plano();
fetch c_juros bulk collect into wrk_juros_plano(p_ind_segreg);
end if;
...p_ind_segreg is my input parameter, that should be the index of the array.
The purpose is to create the parameter indexed element if it doesn't already exist, fetching it
from the cursor, that defines a nested table.
I tried removing the initialization line to no effect, among other things.Ok, I just found out a way around it. It works, but that error is probably a bug, cause workarounds are not really cute.
I declared a nested table compatible with the element from the associative array:
wrk_juros t_juros_plano;and chaged that line that was causing the error
fetch c_juros bulk collect into wrk_juros_plano(p_ind_segreg);for
fetch c_juros bulk collect into wrk_juros;
wrk_juros_plano(p_ind_segreg) := wrk_juros;Awesome =\ -
Collections stored as Nested tables
I have created a Table with XMLTYPE column and the
column is defined as Object against a registered Schema.
I have also created nested tables for all collection types
and created appropriate indexes on the Nested tables
based on Nested_table_Id and array_index.
CREATE TABLE STATEMENT_DATA
TEST SYS.XMLTYPE
XMLTYPE COLUMN TEST STORE AS OBJECT RELATIONAL
XMLSCHEMA "StatementData.xsd"
ELEMENT "StatementData"
varray TEST."XMLDATA"."MessagePayload"."BillDeterminant"
STORE AS table BillDeterminant
( varray "AttributeList" STORE AS table BillDtr_AttrList,
varray "ChargeProfileData" STORE AS table BillDtr_ProfData )
varray TEST."XMLDATA"."MessagePayload"."MarketStatement"
STORE AS table MarketStatement
(varray "MarketStatementLineItem" STORE AS table marketlineitm
( varray "PassThroughBill"."AttributeList" STORE AS table Lineitm_ChargeProf_AttrList,
varray "PassThroughBill"."ChargeProfile" STORE AS table Lineitm_ChargeProfile
(varray "ChargeProfileData" STORE AS table ChargeProfileData),
varray "AttributeList" STORE AS table Lineitm_AttributeList),
varray "RTO" STORE AS table Rto
(varray "ErpAddress" STORE AS table rto_ErpAddress,
varray "ErpPerson" STORE AS table rto_Erpperson
(varray "ErpTelephoneNumber" STORE AS table rto_ErpTelephoneNumber)) ,
varray "Customer" STORE AS table Customer
(varray "ErpAddress" STORE AS table Cust_ErpAddress,
varray "ErpPerson" STORE AS table cust_Erpperson
(varray "ErpTelephoneNumber" STORE AS table cust_ErpTelephoneNumber)) ,
varray "ActivityRecord" STORE AS table ActivityRecord)
Sample Index :
CREATE UNIQUE INDEX MARKETLINEITM_indx1 ON MARKETLINEITM d
( d.NESTED_TABLE_ID,d.array_index);
Now when I tried to execute a sample query involving some of the
nested tables , Explain Plan shows that it is not using the indexes
I have created.
The following parameters are also set in the Database.
query_rewrite_enabled : TRUE
query_rewrite_integrity : TRUSTED.
I am using Oracle 9.2.0.5.0.
Can somebody tell me if I am missing something?
Thanks,
ArunThanks for the reply. XMPTYPE based column is not using the
indexes even after gathering Index statistics. However the Statistics
gathering is helping queries based on XMLTYPE based tables.
Any suggestion for XMLTYPE based columns ? Has anybody
been able to successfully use the indexes in 10g ?
Arun
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