View query to results array
previus information... jdeveloper 10.1.3.0.4, the application is java swing adf bc .
hi, i have a bc view (sql only) inside an application module, how could i assign the results of view's query with an array of objects.
Not sure if this is on target, but if you are using ADF BC the view object's query results are already in an array of objects. Reference the following document to view how the results are structured. You can programmatically then work with the results set using the ViewObject, RowSet, and RowSetIterator Interfaces. See the SRDemo Application Module services for some examples of this in action (demo is in JSF though, not Swing.)
http://www.oracle.com/technology/products/jdev/tips/muench/mostcommon/index.html
thanks
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Create Materialized View based on Results from LDAP Query
Hi -- I'm trying to create a materialized view based on results from an LDAP query. Unfortunately, it looks like a materialized view can't be created based on a stored procedure, which is where the LDAP results are obtained (using nested loops).
Does anyone have any idea how to do this without first kicking off a stored procedure that populates a temp table which would be used to create the materialized view? I'm trying to minimize the steps that the DBA's will need to go through when refreshing this new view.
Thanks,
~ChristineCan you give us more details about the stored procedure you're calling. It will help to know what parameters are involved and what data types they are.
Off the top of my head though it looks like, at the very least, you would need a stored function that calls the stored procedure. I don't think there is any way to call stored procedures from CREATE ... commands. If you're going to create a stored function anyway ... well, you might as well just create a procedure that inserts values into a regular table instead of fussing with functions and materialized views. You'll probably want to schedule your new procedure to run periodically since it sounds like you'll need the values refreshed from time to time. -
Hi Greg,
I had created a view on a table which doesn't have Primary Key, but it has Unique and Not Null constraints on required columns.
I had wrote a procedure to query the data on VIEW. I have experienced strange problem, very first call to procedure will take more time than succeeding requests. For example from second request onwards, it returns data in < 2 Sec, but first transaction is taking 12 Sec to 30 Sec.
I thought that very first time VIEW is taking time to refresh it self. So, I added FORCE keyword in CREATE VIEW stattement. However, that doesn't helped out.
In my further investigation I came to know that base table on which VIEW created, has to be loaded in to memory before querying on VIEW.
So, I had executed a simple select statement on base table, before I execute VIEW query in procedure.
With this change I got results consistently < 2 Sec all the times.
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Thanks,
SubbaraoHi,
A view is nothing but parsed SQL statements stored in the database, a view may or may not run faster. If you execute the SQL used to define the view how much time is it taking. If you want try looking at MATERIALIZED VIEW , that may help you.
thanks -
How to get the recordcount of a query in a array
I have an array called "sums" that holds 4 query's, each
query has a different number of records.
Then i use this code to loop the records of the query inside
the array:
<cfloop index="x" from="1" to="#arrayLen(sums)#">
<cfloop index="i" from="1" to="#sums[x].recordcount#">
data to loop
</cfloop>
</cfloop>
This results in 4 times 4 records, of course as i now use the
array length in the inner loop.
My question is, how can i get the recordcount of a query in a
array so i can use that for the inner loop "to" value.
Thanks.quote:
Originally posted by:
MarcovandenOever
Does sums[x]recordcount point to the first query in the array
sums when i use it like this?
In the array there are four query's, i want to loop the
array, then i want to loop the records of each query.
<cfloop index="x" from="1" to="#arrayLen(sums)#">
<cfloop index="i" from="1" to="#sums[x].recordcount#">
data to loop
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No. It points to each query in turn. So if you have four
queries, the first time it will point to sum[1]. Then next time
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Hello,
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Oracle view returns incomplete result
Hello, I have a view on oracle table, but sometimes I found the result from the view is not complete.
It only returns part of the rows, at the meanwhile, the performance becomes very bad.
(the only change on the table is a new index be created on it)
After a did the table EXP / IMP, the performance back to normal (this is what I expedted), AND THE VIEW RETURNS FULL RESULT!
It is so weird I cannot believe this can happen...
Is it possilbe that oracle returns incompleted result rows without error?
Edited by: user2406411 on 20-May-2012 10:06 AM
Edited by: user2406411 on 20-May-2012 10:07 AMIt only returns part of the rows, at the meanwhile, the performance becomes very bad.does it mean the select from view has been stopped/interrupted before it finished itself?
Oracle could choose different plan with the index introduced. This plan could return first portion of rows fast, then continue to work on following portion, ant that took more time, but you did not want to wait and stop it.
After exp/imp oracle may choose different plan that returns all rows at once.
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Convert JPA Query getResultList to Array
I have been struggling with this problem for several hours now. All I have succeeded in doing is attempt every possible way to convert a List into an array and I just get errors.
// create native SQL query
Query q = em.createNativeQuery("SELECT * FROM Project p");
// get and process the results
List<Project> list = q.getResultList();
Project[] retVal = new Project[list.size()];
for (int i = 0; i < list.size(); i++)
retVal[i] = list.get(i);
}One would assume this to work, however this generates a ClassCastException, cannot convert Object to Project, oddly because as far as I can see everything in the code is strongly typed. I think Persistence fills the typed List with Object and not Project??
So I tried:
Project[] retVal = list.toArray(new Project[0]);This generates an ArrayStoreException.
Finally I tried the basic, should generate x-lint warning:
Project[] retVal = (Project[])(list.toArray());This also return ClassCastException, same reason as the first attempt.
I want my WebService function to return a standard Project[] not the java.lang.List class. But it seems JPA queries only support getting a List. I have googled to no end for a solution. Help appreciated!
Thanks.You are almost right, you can solve this two ways as below:
First, use native query with result class reference.
Second, use JPA query with createQuery method.
Both the options should work, see code below:
// First option, create native SQL query with result class reference.
Query q = em.createNativeQuery("SELECT * FROM Project p",Project.class);
// Second option, Create JPA Query.
// Query q = em.createQuery("SELECT p FROM Project p");
// get and process the results
List<Project> list = q.getResultList();
// Putting result to an array
Project[] retVal = new Project[list.size()];
list.toArray(retVal);*Cheers,
typurohit* (Tejas Purohit) -
Reg: fetch the data by using item_id which is retuned by In line View Query
Hi all,
create table xxc_transactions(type_id number,trx_line_id number ,item_id number,org_id number);
insert into xxc_transactions values(null,null,null,null);
create table xxc_items1(item_id number,org_id number,item_no varchar2(10));
insert into xxc_items1 values(123,12,'book');
create table xxc_headers(header_id number,order_id number);
insert into xxc_headers values(null,null);
create table xxc_lines(header_id number,item_id number,line_id number);
insert into xxc_lines values(null,null,null);
create table xxc_types_tl(transaction_id number,NAME varchar2(10));
insert into xxc_types_tl values(106,'abc');
create table xxc_quantity(item_id number);
insert into xxc_quantity values (123);
create table xxc_quantity_1(item_id number);
insert into xxc_quantity_1 values (123);
SELECT union_id.item_id,
b.org_id,
e.name,
fun1(union_id.item_id) item_no
FROM xxc_transactions a,
xxc_items1 b,
xxc_headers c,
xxc_lines d,
xxc_types_tl e,
(SELECT item_id
FROM xxc_quantity
WHERE item_id = 123
UNION
SELECT item_id
FROM xxc_quantity_1
WHERE item_id = 123
UNION
SELECT item_id
FROM xxc_transactions
WHERE item_id = 123) union_id
WHERE a.type_id = 6
AND a.item_id = b.item_id
AND union_id.item_id = b.item_id
AND a.org_id = b.org_id
AND c.header_id = d.header_id
AND d.line_id = a.trx_line_id
AND d.item_id = b.item_id
AND c.order_id = e.transaction_id
AND b.org_id = 12
GROUP BY union_id.item_id,
b.org_id,
e.name
ORDER BY union_id.item_id;
create or replace function fun1(v_item in number)
return varchar2
is
v_item_no
Begin
select item_no from xxc_items1
where item_id=v_item;
return v_item_no ;
Exception
When Others Then
v_item_no := null;
return v_item_no;
END fun1;
I need fetch the data by using item_id which is retuned by In line View Query(UNION)
item_id org_id name item_no
123 12 abc book
Version: 11.1.0.7.0 and 11.2.0.1.0
Message was edited by: Rajesh123 Added test cases script
Message was edited by: Rajesh123 changed Question as fetch the data by using item_id which is retuned by In line View Query(UNION)Hi Master , sorry for the late reply and can you please help on this?
create table xxc_transactions(type_id number,trx_line_id number ,item_id number,org_id number);
insert into xxc_transactions values(null,null,null,null);
create table xxc_items(item_id number,org_id number,item_no varchar2(10));
insert into xxc_items values(123,12,'book');
create table xxc_headers(header_id number,order_id number);
insert into xxc_headers values(null,null);
create table xxc_lines(header_id number,item_id number,line_id number);
insert into xxc_lines values(null,null,null);
create table xxc_types_tl(transaction_id number,NAME varchar2(10));
insert into xxc_types_tl values(106,'abc');
create table xxc_uinon_table(item_id number);
insert into xxc_types_tl values(123);
SELECT union_id.item_id,
b.org_id ,
e.name ,
fun1(union_id.item_id) item_no --> to get item_no
FORM xxc_transactions a,
xxc_items b,
xxc_headers c,
xxc_lines d,
xxc_types_tl e,
( SELECT item_id
FROM xxc_uinon_table ) union_id
WHERE a.type_id= 6
AND a.item_id = b.item_id
AND union_id.item_id = b.item_id
AND a.org_id = b.org_id
AND c.header_id = d.header_id
AND d.line_id= a.trx_line_id
AND d.item_id= b.item_id
AND c.order_id= e.transaction_id ---106
AND b.org_id = 12
GROUP BY union_id.item_id,
b.org_id ,
e.name
ORDER BY union_id.item_id;
Note: xxc_uinon_table is a combination of UNION's
select 1 from dual
union
select 1 from dual
union
select no rows returned from dual;
I will get 1 from the above Query
Thank you in advanced -
Spatial vs. materialized views/query rewrite
Dear all,
we are trying to use Spatial (Locator) functionality together with performance optimization using materialized views and query rewrite, and it does not seem to work. Does anybody has experience with this?
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This happenes, even if neither the materialized view, nor the query contains the spatial attribut.
The explanation given by the procedure DBMS_MVIEW.Explain_Rewrite is:
"QSM-01064 query has a fixed table or view Cause: Query
rewrite is not allowed if query references any fixed tables or views"
We are using Oracle 9R2, Enterprise Edition, with locator. Nevertheless, it would also be interesting, if there is any improvement in 10g?
A more complicated task, using materialized views to optimize spatial operations (e.g., sdo_relate) would also be very interesting, as spatial joins are very expensive operations.
Thanks in advance for any comments, ideas!
Cheers,
Gergely LukacsHi Dan,
thanks for your rapid response!
A simple example is:
alter session set query_rewrite_integrity=trusted;
alter session set query_rewrite_enabled=true;
set serveroutput on;
/* Creating testtable */
CREATE TABLE TESTTABLE (
KEY1 NUMBER (4) NOT NULL,
KEY2 NUMBER (8) NOT NULL,
KEY3 NUMBER (14) NOT NULL,
NAME VARCHAR2 (255),
X NUMBER (9,2),
Y NUMBER (9,2),
ATTR1 VARCHAR2 (2),
ATTR2 VARCHAR2 (30),
ATTR3 VARCHAR2 (80),
ATTR4 NUMBER (7),
ATTR5 NUMBER (4),
ATTR6 NUMBER (5),
ATTR7 VARCHAR2 (40),
ATTR8 VARCHAR2 (40),
CONSTRAINT TESTTABLE_PK
PRIMARY KEY ( KEY1, KEY2, KEY3 ));
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CREATE MATERIALIZED VIEW TESTTABLE_MV
REFRESH COMPLETE
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AS SELECT DISTINCT ATTR7, ATTR8
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/* Creating statistics, just to make sure */
execute dbms_stats.gather_table_stats(ownname=> 'TESTSCHEMA', tabname=> 'TESTTABLE', cascade=>TRUE);
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SELECT DISTINCT
ATTR8 FROM
TESTTABLE
i NUMBER;
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QSM-01009 materialized view, string, matched query text
Cause: The query was rewritten using a materialized view, because query text matched the materialized view text.
Action: No action required.
i.e. query rewrite works!
/* Adding geometry column to the testtable -- not to the materialized view, and not to the query! */
ALTER TABLE TESTTABLE
ADD GEOMETRYATTR mdsys.sdo_geometry;
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DECLARE
Rewrite_Array SYS.RewriteArrayType := SYS.RewriteArrayType();
querytxt VARCHAR2(1500) :=
'SELECT COUNT(*) FROM (
SELECT DISTINCT
ATTR8 FROM
TESTTABLE
i NUMBER;
BEGIN
DBMS_MVIEW.Explain_Rewrite(querytxt, 'TESTTABLE_MV', Rewrite_Array);
FOR i IN 1..Rewrite_Array.count
LOOP
DBMS_OUTPUT.PUT_LINE(Rewrite_Array(i).message);
END LOOP;
END;
The messages you get are:
QSM-01064 query has a fixed table or view
Cause: Query rewrite is not allowed if query references any fixed tables or views.
Action: No action required.
QSM-01019 no suitable materialized view found to rewrite this query
Cause: There doesn't exist any materialized view that can be used to rewrite this query.
Action: Consider creating a new materialized view.
i.e. query rewrite does not work!
If this works, the next issue is to use materialized views for optimizing spatial operations, e.g., a spatial join. I can supply you with an example, if necessary (only makes sense, I think, after the first problem is solved).
Thanks in advance for any ideas, comments!
Cheers,
Gergely -
Main Query modification result Report builder crash [Solved]
Hi,
I want to modify main Query of report builder because (it shows two columns which are not generated by query and when I run report it raises error that columns not found) but when I modify the query it result in report builder crash, plz give me any solution, I had experience same issue a month ago and I created new query with all formula columns but this time I have too much CF and CP columns is there any way to drop it from one group to another.
Thanks and Regards, Khawar.
Details:
OS windows XP/2000
Report Builder 10.1.2.0.2
ORACLE Server Release 10.1.0.4.2
Oracle Procedure Builder 10.1.2.0.2
Oracle ORACLE PL/SQL V10.1.0.4.2 - Production
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Message was edited by:
S. KhawarHi,
I saved the report in JSP format and did the required change and it works great.
Regards, Khawar. -
Acrobat X--View Adobe PDF results
Since the latest update to Acrobat X Pro, to 10.1, Acrobat doesn't show the PDF results when I print to PDF (from Word, from the Web, etc.). The PDF printer otherwise works fine; I just like to see the PDF pop up right after I create it to make sure it's what I want. I took a look at printing preferences for the Adobe PDF printer, and "View Adobe PDF results" is still checked (it was checked under the version before the update). I'm using Windows 7 Home Premium 64-bit, if that matters. I'd appreciate any help anyone can provide. Thanks in advance!
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Going to Printer Properties, Advanced tab, and unchecking "Enable advanced printing features" did display the file after creating it.
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Query with results always needed...
Hi
Would you please help me to get this query? I noew with Oracle 9i...
What I need is to create a query Not empty or with rows always.
I have a list below where I need to get the count and the sum grouped by Source in a Date range.
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Source Payment Code_Emp In_Date
SAP 100.00 001 01/01/2004
SAP 100.00 001 01/01/2004
SAP 100.00 001 02/02/2004
SAP 100.00 001 02/02/2004
SAP 100.00 001 03/03/2004
CAC 100.00 001 01/01/2004
CAC 100.00 001 01/01/2004
CAC 100.00 001 01/01/2004
CAC 100.00 001 01/01/2004
CAC 100.00 001 02/01/2004
CAC 100.00 001 02/01/2004
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Sum of Count
Payments
Totals for SAP 200.00 2
Totals for CAC 400.00 4
Difference 200.00 -2
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FROM ApDetail
WHERE Reconciliation_Id is Null
AND In_Date BETWEEN To_Date('01/01/2004','MM/DD/YYYY')
and To_Date('01/31/2004','MM/DD/YYYY')
GROUP by Source
union
SELECT Source, 0, 0
FROM ApDetail
WHERE Reconciliation_Id is Null
KIND REGARDS.SELECT
Count(SAP.code_Emp) SAP_T_Payment_Req,
Count(CAC.code_Emp) CAC_T_Payment_Req,
ROUND(NVL(Sum(SAP.payment),0),2) SAP_T_Payment_Amount,
ROUND(NVL(Sum(CAC.payment),0),2) CAC_T_Payment_Amount,
ROUND(NVL(Sum(CAC.payment),0),2) -
ROUND(NVL(Sum(SAP.payment),0),2) Difference
FROM ApDetail CAC, ApDetail SAP
WHERE
(SAP.Reconciliation_Id is Null
AND SAP.In_Date BETWEEN To_Date('01/01/2004','MM/DD/YYYY')
and To_Date('01/31/2004','MM/DD/YYYY')
AND SAP.SOURCE = 'SAP')
AND (CAC.Reconciliation_Id is Null
AND CAC.In_Date BETWEEN To_Date('01/01/2004','MM/DD/YYYY')
and To_Date('01/31/2004','MM/DD/YYYY')
AND CAC.SOURCE = 'CAC')
This Query ALWAYS return ONE record. -
Materialized view query (Oracle 9i)
I have dropped a materialized view query and trying to create the same with additional columns in the prebuilt table.
Option - 1
when Iam using a query in the materialized view query "select * from schema.table@link, with refresh mode fast option, the database throws an error " no table or view exists"
Option - 2
When Iam using a query in the materialized view query "select * from schema.table@link, with refresh mode option either complete or force, it gets created.
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-balaHi,
Does a table named profit_mvw already exist?
The following example illustrates the two steps required to register a user-defined table. First, the table is created, then the materialized view is defined using exactly the same name as the table. This materialized view sum_sales_tab is eligible for use in query rewrite.
CREATE TABLE sum_sales_tab
PCTFREE 0 TABLESPACE demo
STORAGE (INITIAL 16k NEXT 16k PCTINCREASE 0) AS
SELECT s.prod_id, SUM(amount_sold) AS dollar_sales,
SUM(quantity_sold) AS unit_sales
FROM sales s GROUP BY s.prod_id;
CREATE MATERIALIZED VIEW sum_sales_tab
ON PREBUILT TABLE WITHOUT REDUCED PRECISION
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SUM(quantity_sold) AS unit_sales
FROM sales s GROUP BY s.prod_id;
Regards,
Simon -
Query Builder results seem to max out at 500 lines. How to change?
Hi all,
Some of out Application Express users are using the Query Builder tool for ad-hoc reporting. The idea is to run the SQL to extract the data, then download to MS Excel. The Query Builder results seem to max out at 500 lines. I want to increase that value. I searched all Application Express forums for 'query builder output max 500' and then 'query builder output' and did not find the answer.
How do I change the 500 line limit in Query Builder results?
Thanks!
Application Express 3.1.2.00.02
Oracle 10g
Standard PDF printing (not BI Publisher)Bryan,
Here is a link to an HTML-DB studio application, that is a QBE "replacement" for the query tool in APEX development..
http://htmldb.oracle.com/pls/otn/f?p=18326:7:1387557504245687::::P7_ID:1222
It is for an older version of APEX, but you should be able to make it work for your needs..
Thank you,
Tony Miller
Webster, TX -
ORA-01762: vopdrv: view query block not in FROM ????
Hi All
any one aware of the error.
ORA-01762: vopdrv: view query block not in FROM
Please reply back.ORA-01762:vopdrv: view query block not in FROM
Cause:This is an internal error message not normally issued.
Action:Contact Oracle Support Services.
Edited by: Karthick_Arp on Sep 23, 2008 11:01 PM
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