How to define a WHERE clause of the subquery in a bean managed?

Hi people,

is it possible to define the place where clause of a subquery in a bean managed?
For example, it is more SQL charly:

SELECT * FROM
(SELECT Person.Name
OF the person)

To change or add a WHERE clause, I use following code for the 'viewObject: view

String whereClause = "ROWNUM < =: numberOfRows;
viewObject.setWhereClause (whereClause);

viewObject.defineNamedWhereClauseParam ("numberOfRows", null, null);
viewObject.setNamedWhereClauseParam ("numberOfRows", new Number (100));

AttributeList myattr = this.getNamedWhereClauseParams ();
viewObject.setNamedWhereClauseParams (myattr);

For example, this code works well for the first SELECT statement limit the output to the first 100 results. But how do I add a WHERE clause of the subquery in a managed bean? For example, when I want to limit the names of people that begin with the letter "A"?
The query should look like this:

SELECT * FROM
(SELECT Person.Name
OF the person
WHERE Person.Name LIKE 'A %')

Anyone know more?

Thank you!

Put a variable binding in your query, something like:

where (: bv is null) or (xxx love: bv)

John

Tags: Java

Similar Questions

Can I use truncated and where clause in the statement even?
Hello guys,.

Can I use truncated with where clause in the same statement.

For ex:

TRUNCATE TABLE my_table WHERE id < 500;

If not, that you recommend me to overtemperature to the level of high water line?

By the way
```
select * from v$version;
```
Oracle Database 11 g Enterprise Edition Release 11.2.0.1.0 - 64 bit Production
PL/SQL Release 11.2.0.1.0 - Production
"CORE 11.2.0.1.0 Production."
AMT for 64-bit Windows: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
>

Thank you very much.

Published by: 970992 on 11:14 13.Ara.2012
>
Okay I need an increasing amount of space. However, at the same time I want to recover the spaces empty below HWM. So, I need to use less amount of space I am inserting. Therefore, shouldn't use retractable for this?
>
Why waste the effort. Oracle will reuse the space below the HWM when doing inserts. You already said that you insert more lines you delete so all these will be more accustomed to the top.

The only time where that oracle may not use space is when the space is too small to be useful. It is documented in the doc, I told you
>
Understanding recoverable unused space
Over time, Update, and Delete on objects within a tablespace can create pockets of empty space that individually are not large enough to be reused for the new data.
>
Most uses of CONTRACTION I've seen are totally useless. If you follow the doc and run the Advisor of segment it will tell you if there is space that can be retrieved and how much. But, even once, for your use even if case will get you will Oracle while you need to reassign the new extensions, then the HWM will just go still higher.

If pay you a heavy price in Oracle did a full table scan, update of many blocks from the table, update THE index, impact performance for other users to access the table during the SHRINK and reallocate extensions (maybe even some of the same areas) when you insert more data.

Do not SHRINK unless you know it's necessary.

How to dynamically generate where clause in Linq
Hi all

Oracle DB: 11 gR 2
Oracle Client: 11.2.0.3.0 (ODP.NET)
Oracle Developer Tools for Visual Studio
VS 2010 (C#)

In a Windows Form, it must query the data based on the values in list dropdown listboxes, which the user selects.
Let's say two combox, one Department and one for salary
Department:
-1 all the
10 Department 1
20 Department 2
30 Department 3

Salary:
-1 all the
1 < 20000
2 20000 to 50000
3 50000 to 100000
4 > 100000

Here is the c# code to query data:
using (var myEDMctx = new HREntities())
{
var LINQrslt = from emp in myEDMctx.EMPLOYEES
Select emp;

}

The default values for the two combox should be everything.
How to write dynamic where clause for this LINQ?

Thanks in advance!
That's what I do.

var query = from c in customers
Select c;

If (where1 > - 1).
Query = query. Where(c.Where1 > where1);

If (where2 > - 1).
Query = query. Where(c.where2 == where2);

to return the query;

Published by: Invincible on July 4, 2012 09:25

Published by: Invincible on July 4, 2012 09:27

Session variable in the WHERE clause of the SQL statement

Hey all,.
I was wonering just if there is a way to set the WHERE clause of the query that the session variable? I have the following so far and have tried to go through a ton of tutorials, but it doesn't seem to work. Is it still possible? I don't know what follows is wrong, but can someone help me with changing the following code, or pointing me to a good tutorial? (I write it with PHP)
$query = "SELECT * from members where user_id = ' $_SESSION ['members']";
Thanks for your help.

$member = "-1";
If (isset($_SESSION['members'])) {}
$member = $_SESSION ['members'];

}
$query = "SELECT * from members where user_id = $member;

Question about the order of evaluation of the clause WHERE CLAUSE when the Oracle OF the syntax used to join tables

Hello
Oracle version: 11.1.0.7.0 - 64 bit
I read the documentation online at joins. The page is avialable here: joins at
My question is about the join order of evaluation of the conditions in clause and the conditions of those
are not the join conditions and are placed in the WHERE clause.
Consider the following pseudocode
SELECT
T1. Col1,
T2.Col1
Of
Table1 t1 LEFT OUTER JOIN table2 t2
WE
(condition_expression1)
WHERE
(condition_expression2)
Is it correct to say that if there is no column on the status of join (condition_expression1) in condition_expression2, then condition_expression2 is executed before condition_expression1? In other words, oracle always trying to filter based on the WHERE clause individually each table as much as possible before joining them based on the conditions on the article?
Thanks in advance,

Hello

dariyoosh wrote:

Hello

Oracle version: 11.1.0.7.0 - 64 bit

I read the documentation online at joins. The page is avialable here: joins at

My question is about the join order of evaluation of the conditions in clause and the conditions of those

are not the join conditions and are placed in the WHERE clause.

Consider the following pseudocode

SELECT

T1. Col1,

T2.Col1

Of

Table1 t1 LEFT OUTER JOIN table2 t2

WE

(condition_expression1)

WHERE

(condition_expression2)

Is it correct to say that if there is no column on the status of join (condition_expression1) in condition_expression2, then condition_expression2 is executed before condition_expression1? In other words, oracle always trying to filter based on the WHERE clause individually each table as much as possible before joining them based on the conditions on the article? ...

The reverse is actually closer to the truth, but we can't really make general statements like that.

SQL is not a language of the proceedings. Looking at the code SQL, we could say that the code does, but we cannot say much about how that code it. In other words, SQL is a language that describes the results you get, not the way to get them.

The optimizer will do everything what he thinks is faster if it does not change the results. If any order in which they are applied (in outer joins or CONNECT BY queries, for example), then think of the join is done first, and the value of the WHERE clause is applied to the result of the join.

Here is a query looks very much like you posted:

SELECT d.deptno

e.ename, e.sal

OF scott.dept d

LEFT OUTER JOIN scott.emp e ON e.deptno = d.deptno

WHERE e.sal > = 3000

ORDER BY d.deptno

;

Output:

DEPTNO ENAME SAL

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

10 KING 5000

20 FORD 3000

20 3000 SCOTT

The scott.dept table contains deptnos 30 and 40; Why are they not in the result set? The query behaves as if the outer join is made first (production 15 rows), then the WHERE clause has been applied. All lines with deptno = 30 had sals down han 3000 and all single line with deptno = 40 was NULL in the sal column, then these lines are excluded (as well as other lines of deptnos 10 and 20), and only 3 lines above are left.

How to compare in Where clause
Hello

I need help comparing the value in where clause

There is a table called productivity which has columns as
OBJECT_TYPE, COMPLEXITY, OBJECTIVE

Now my requirement is I have a query like this

SELECT
PRO. PROJECT NAME,
POBJ. OBJECT_NAME,
POBJ.COMPLEXITY,
PRO. EFFORT
Of
PROJECT PRO, PROJECT_OBJECTS POBJ
WHERE
PRO.ID = POBJ.ID

I have to compare data between the effort of columns in the query and target in the table of productivity

SELECT
PRO. PROJECT NAME,
POBJ. OBJECT_NAME,
POBJ. OBJECT_TYPE,
POBJ.COMPLEXITY,
PRO. EFFORT
Of
PROJECT PRO, PROJECT_OBJECTS POBJ
WHERE
PRO.ID = POBJ.PRO_ID

now I change the query to compare

SELECT
PRO. PROJECT NAME,
POBJ. OBJECT_NAME,
POBJ.COMPLEXITY,
-case when
POBJ. OBJECT_TYPE IN (SELECT OBJECT_TYPE OF PRODUCTIVITY) AND
POBJ.COMPLEXITY (SELECT COMPLEXITY OF PRODUCTIVITY)
PRO. EFFORT > (SELECT GOAL OF PRODUCTIVITY WHERE type_objet =? AND
COMPLEXITY =? ) / / here instead of? I have to say
POBJ. OBJECT_TYPE and POBJ.COMPLEXITY
then
10
ON THE OTHER
0
END "Effort."
Of
PROJECT PRO, PROJECT_OBJECTS POBJ
WHERE
PRO.ID = POBJ.PRO_ID

How to specify this POBJ column. OBJECT_TYPE and POBJ.COMPLEXITY in please of? I put please suggest.

Is there a way where we can spend the value of POBJ. OBJECT_TYPE and POBJ.COMPLEXITY to a variable binding and select it in the where clause

Indicate please let me know if this issue is not understood.

Thank you
Sudhir
Something like that, maybe?
```
SELECT PRO.PROJECT_NAME,
       POBJ.OBJECT_NAME,
       POBJ.COMPLEXITY,
       case when PRO.EFFORT > PROD.GOAL
                 then 10
            ELSE 0
       END "Effort"
FROM   PROJECTS PRO,
       PROJECT_OBJECTS POBJ,
       PRODUCTIVITY PROD
WHERE  PRO.ID = POBJ.PRO_ID
AND    POBJ.OBJECT_TYPE = PROD.OBJECT_TYPE (+)
AND    POBJ.COMPLEXITY = PROD.COMPLEXITY (+)
```
I did an outer join; don't know if that's what you want - if not, just get rid of the (+) {noformat} {noformat}

How to define "ask where to save.

Please give SIMPLE instructions on how to make sure that 39 Firefox will ask you where to put the downloads.
Have tried changing the settings.

THANKS in advance.
LTSilver

The classic way is to select always ask me where to save files in the Options tab. To open it, click on the menu button at the top right and select Options, the corresponding feature is in the general Panel, downloadssection.

Did you do that?

Where clause in the "default_where" of get_block_property is not cancelled...

Hello
I developed a form with two blocks.
The first - block of non - database contains the criteria.
Database of the other - block-displays the records according to the inserted.
Also, there is a button that executes the query criteria.
The code of the BUTTON WHEN PRESSED is as follows:
declare
v_where varchar2 (3000);
Start
v_where: = null;
go_block ('EKKREMOTHTES_AIT_TSG');
clear_block (no_validate);
v_where: = get_block_property ('EKKREMOTHTES_AIT_TSG', default_where);
If: blk_criteria.site_id is not null then
v_where: = v_where |' and site_id = "'|: blk_criteria.site_id | ''';
end if;
If: blk_criteria.yphr_klimakio is not null then
v_where: = v_where |' and yphr_klimakio = "'|: blk_criteria.yphr_klimakio | ''';
end if;
If: blk_criteria.send_date_from is not null and: blk_criteria.send_date_to is not null then
v_where: = v_where |' and send_date between to_date('''|| to_char(:blk_criteria.send_date_from,'dd/mm/yyyy')||''',''dd/mm/yyyy'') and
to_date('''|| to_char(:blk_criteria.send_date_to,'dd/mm/yyyy') | " (', "dd/mm/yyyy)";
end if;
If: blk_criteria.eq_group1 is not null then
v_where: = v_where |' and eq_group1 = "' | : blk_criteria.eq_group1 | " ' ;
end if;
If: blk_criteria.eq_type1 is not null then
v_where: = v_where |' and eq_type1 = "' | : blk_criteria.eq_type1 | " ' ;
end if;
If: blk_criteria.eq_group2 is not null then
v_where: = v_where |' and eq_group2 = "' | : blk_criteria.eq_group2 | " ' ;
end if;
If: blk_criteria.eq_type2 is not null then
v_where: = v_where |' and eq_type2 = "' | : blk_criteria.eq_type2 | " ' ;
end if;
blk_def_where ('EKKREMOTHTES_AIT_TSG', v_where); / * a form routine that makes the set_block_property(<block>,default_where) * /.
do_key ('execute_query');
end;
The above code works when the user inserts the criteria for the first time. Later when the user deletes certain criteria - clear criteria in the block of criteria-
and he pushed the button of the query results are exactly the same...
After have debugged the problem, clause v_where is not nullied (do not get the value zero) in order to get the new criteria.
Can you identify the error?
Note: I use Oracle Forms 10 g Db 11 g v.2
Thank you very much
SIM

SIM,

The procedure "blk_def_where" sets the block where clause by using the DEFAULT_WHERE or the ONETIME_WHERE constanct? Gets it to the user that the same results as the DEFAULT_WHERE sets the property WHERE permanently so the second time through, the 'v_where' is NOT null. Check your BLK_DEF_WHERE procedure and if it does not use the ONETIME_WHERE constanct, change isn't. The alternative would be to put DEFAULT_WHERE = NULL after the call to the built-in EXECUTE_QUERY.

Craig...

Passing the value of the where clause with the page

Dear friends,
I have a requirement like when I select a selection list value I should pass this value to sql query where clause without submitting the page
ex I have a select like: P1_Dept guess I selects the value 10 in this
then I have a query select * from emp where deptno =: P1_Dept.
DB. ORACLE 11G
APEX 4.1.1.00.23
is this possible? can someone help me please in this topic
Thanks and greetings
Vballeda

Suppose we have the selection list with the name P1_DEPT and query for report
```
select * from emp where deptno = :P1_DEPT
```
We create dynamic Action on the evolution of the P1_DEPT point. We will need two real actions:

1-> set value action

Set the Type - > body of the PL/SQL function

The function of body - > return 1;

Page item to submit-> P1_DEPT

Change to delete-> Yes event

Selecttion Type-> trigger element

2. action-> Refresh

Selecttion Type-> region

Region-> your region of report

By using a WHERE clause in the tree APEX

Hi all -
I have a hierarchical SQL query that I display as a tree of the APEX.
Here is my sample application:
https://Apex.Oracle.com/pls/Apex/f?p=32581:29
Login: guest
PW: app_1000
workspace: leppard
I try to add a WHERE clause so that only nodes with the lowest-level children are displayed, i.e. something like "WHERE connect_by_isleaf = 0 OR level = 5'"
The tree of query with where clause works very well in the SQL command window, but when I add the WHERE clause to my tree apex page no longer displays anything. Is this a problem with APEX or y at - it another way to filter my results?
Thanks in advance for your suggestions,
John

Connect occurs in the first place, the where the provision is applied to these results, effectively cutting in the hierarchical structure. Since the apex has build a hierarchical structure of the query, it relies on the virtual level, which is butchered by applying the where clause. It's a miracle that you're not even receive errors because I expect almost an incorrect json array was built. With no top-level from and only level 5 or end nodes, there is no structure to present: the two apex cannot set a correct representation and not jstree neither. In your request, you will see your "root nodes", but it is not representable.

I don't know why you want to present it in a tree? Levels both connect_by_is_leaf = 5 will give you everything just a list of nodes without any hierarchical structure.

The best thing to do is to use a subquery to limit first your dataset and then use it for the basic tree query, this way you violate one of these vital columns.

For example if you want only nodes and their immediate parent, you can opt for something like this (fast on some testdata model):
```
with dataset as (
select node_id, parent_id
   from treedata
  where connect_by_isleaf = 0
connect by prior node_id = parent_id
  start with parent_id = 0
),
dataset2 as (
select node_id, parent_id
  from dataset
union all
select node_id, null parent_id
  from treedata
where node_id in (select parent_id from dataset)
)
select level, node_id
   from dataset2
connect by prior node_id = parent_id
  start with parent_id is null
```

ADF Faces 11, add where clause to the detail view in the master/detail relationship
Hello

I have two display objects only read connected by a link in a relationship master detail.

They are displayed in a treetable in the form.

I have a method on the java object impl view master class, I use to add custom where claused based on entries different user and then run the query.

Works well, master and detail is interview properly.

But I also want to further filter the detail view (view from destination in the display link). However, as soon as I add whereclause in the detail view against the master
relationship of detail seems to have disappeared and are no detail record. I also tried to add a view criteria but with the same result.

Your comments will be appreciated.

ADF FACES 11g release 1.

Jan
You can get the ViewLinkAccessor, then the ViewObject and try to apply the ViewCriteria, followed by executeQuery... what you are already doing.
Better to paste your code here...

Tuning - using the CASE statement in the WHERE clause of the query

Hi all

My request has been changed to use a CASE statement in the WHERE clause to examine the data to some columns based on a parameter value. This modified request is made a full table and constantly running scan. Please suggest what can be done to improve its performance:

Query:

SELECT LAST_DAY(TRUNC(TO_TIMESTAMP(os.requestdatetime, 'yyyymmddhh24:mi:ss.ff4'))) AS summary_date,
os.acctnum,
os.avieworigin_refid,
COUNT(1) cnt_articleview,
SUM(NVL(autocompletedterm,0)) cnt_autocompletedterm
FROM TABLE1 os
WHERE os.acctnum IS NOT NULL
AND os.avieworigin_refid IS NOT NULL
AND os.requestdatetime IS NOT NULL
AND UPPER(os.success_ind) = 'S'

AND CASE WHEN
Param_ValueToCheck  = 'FULL' AND get_date_timestamp(os.requestdatetime)  BETWEEN 
TO_DATE('01-MAY-2011 00:00:00','DD-MON-YYYY HH24:MI:SS') AND
TO_DATE('31-MAY-2011 00:00:00','DD-MON-YYYY HH24:MI:SS')
THEN 1
WHEN
Param_ValueToCheck  = 'INCR' AND os.entry_createddate  BETWEEN 
TO_DATE('01-MAY-2011 00:00:00','DD-MON-YYYY HH24:MI:SS') AND
TO_DATE('31-MAY-2011 00:00:00','DD-MON-YYYY HH24:MI:SS')
THEN 1
END = 1
AND CASE WHEN
Param_ValueToCheck  = 'FULL' AND os.entry_CreatedDate BETWEEN 
TO_DATE('01-APR-2011 00:00:00','DD-MON-YYYY HH24:MI:SS') AND
TO_DATE('07-JUN-2011 00:00:00','DD-MON-YYYY HH24:MI:SS')
THEN 1
WHEN
Param_ValueToCheck  = 'INCR' THEN 1
END = 1
GROUP BY LAST_DAY(TRUNC(TO_TIMESTAMP(os.requestdatetime, 'yyyymmddhh24:mi:ss.ff4'))), os.acctnum,os.avieworigin_refid;

Description of the table:
(Number of lines: approx. > amount 600 000 000)

Name                           Null     Type       
------------------------------ -------- ------------
ARTICLEID                      NOT NULL NUMBER(20) 
USERKEY                                 NUMBER(10) 
AVIEWORIGIN_REFID                       VARCHAR2(10)
SUCCESS_IND                             VARCHAR2(2)
ENTRY_CREATEDDATE                       DATE       
CREATED_BY                              VARCHAR2(10)
FILENUMBER                              NUMBER(10) 
LINENUMBER                              NUMBER(10) 
ACCTNUM                                 VARCHAR2(10)
AUTOCOMPLETEDTERM                       NUMBER(2)  
REQUESTDATETIME                         VARCHAR2(19)

Explain Plan

SQL> select * from table(dbms_xplan.display);

PLAN_TABLE_OUTPUT
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Plan hash value: 2224314832

----------------------------------------------------------------------------------------------------------
| Id  | Operation            | Name              | Rows  | Bytes | Cost (%CPU)| Time     | Pstart| Pstop |
----------------------------------------------------------------------------------------------------------
|   0 | SELECT STATEMENT     |                   |   590 | 33040 |  2501K  (1)| 08:20:15 |       |       |
|   1 |  HASH GROUP BY       |                   |   590 | 33040 |  2501K  (1)| 08:20:15 |       |       |
|   2 |   PARTITION RANGE ALL|                   |   590 | 33040 |  2501K  (1)| 08:20:15 |     1 |1048575|
|*  3 |    TABLE ACCESS FULL | TABLE1 |   590 | 33040 |  2501K  (1)| 08:20:15 |     1 |1048575|
----------------------------------------------------------------------------------------------------------


PLAN_TABLE_OUTPUT
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------

   3 - filter(UPPER("OS"."SUCCESS_IND")='S' AND CASE  WHEN ('FULL'='FULL' AND
              "OS"."ENTRY_CREATEDDATE">=TO_DATE(' 2011-04-01 00:00:00', 'syyyy-mm-dd hh24:mi:ss') AND
              "OS"."ENTRY_CREATEDDATE"<=TO_DATE(' 2011-06-07 00:00:00', 'syyyy-mm-dd hh24:mi:ss')) THEN 1 WHEN
              'FULL'='INCR' THEN 1 END =1 AND "OS"."REQUESTDATETIME" IS NOT NULL AND CASE  WHEN ('FULL'='FULL'
              AND "ODS"."GET_DATE_TIMESTAMP"("REQUESTDATETIME")>=TO_DATE(' 2011-05-01 00:00:00', 'syyyy-mm-dd
              hh24:mi:ss') AND "ODS"."GET_DATE_TIMESTAMP"("REQUESTDATETIME")<=TO_DATE(' 2011-05-31 00:00:00',
              'syyyy-mm-dd hh24:mi:ss')) THEN 1 WHEN ('FULL'='INCR' AND "OS"."ENTRY_CREATEDDATE">=TO_DATE('
              2011-05-01 00:00:00', 'syyyy-mm-dd hh24:mi:ss') AND "OS"."ENTRY_CREATEDDATE"<=TO_DATE('

PLAN_TABLE_OUTPUT
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
              2011-05-31 00:00:00', 'syyyy-mm-dd hh24:mi:ss')) THEN 1 END =1 AND "OS"."ACCTNUM" IS NOT NULL AND
              "OS"."AVIEWORIGIN_REFID" IS NOT NULL)

Published by: Chaitanya on June 9, 2011 02:44

Published by: Chaitanya on June 9, 2011 02:47

When it is executed individually, MERGE LOGIC 1 and LOGIC of MERGE 2 take about ten for a daterange of 30 days data.

BUT FULL is to get the scores of APR - JUN, INCR becomes partitions for MAY so not both 30 days.
Are compare us like with like?

How only include a WHERE clause only when a connection variable has a value?
I use JDeveloper 11 g using business components of the tables. I'm now modify the auto-generated SQL code to include WHERE clauses which depend on the values of bind variables. For example I have something like this:
```
SELECT mytable.firstColumn
FROM myTable 
WHERE myTable.secondColumn= :VariableValue
```
However, this means that when VariableValue is null SQL would fail and I get an error. Is there a way I can include the WHERE clause (or clause AND according to the position in SQL) only when a bound variable has a value (or a particular value)?
Or use: WHERE NVL(:VariableValue,myTable.secondColumn) = myTable.secondColumn

Setting in the WHERE clause of the query
Hi all

I have 2 tables.

TABLE_A contains 10 million documents.
TABLE_B contains 100 records.

I associate myself with these 2 tables

Here's a.ID left
```
SELECT A.*, B.*
FROM TABLE_A a, TABLE_B b
WHERE a.ID = b.ID;
```
Here's b.ID left
```
SELECT A.*, B.*
FROM TABLE_A a, TABLE_B b
WHERE b.ID = a.ID;
```
My question is what query will give better performance? I thought that, if we put the column in the table with a lower number of lines on the left, then it will be faster than the other.
In current versions of Oracle, it does not matter in what order you sum-up your predicates in the WHERE clause of a query: they will be optimized/executed in a way even.

ADF business components: how to apply where Clause to the new lines
Hello world.
I develop Web Application from merger under Jdeveloper 11.1.1.0.1.
I read this post http://blogs.oracle.com/jheadstart/rowmatch/
And I have a question. How should I configure rowmatch if I instance the same viewobject except 2 2 viewobject defined on the same entity.
If you use view criteria to make your filtering and scoring mode 'filter' of the Victoria Cross to be "Both" (database and in-memory), then the framework will automatically use your filter to filter the lines again without having to write code or use your own rowMatch object.

How to define a WHERE clause of the subquery in a bean managed?

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