Matrix of distances: selection of values with the number of the column as a variable

Hi all

You wonder if SQL can do natively, let's go.

I have a static table with the same amount of rows and columns, that changes forever; It represents the distances between locations (e.g. countries).
It's basically a distance matrix (you can find a good example on Wikipedia ).

My SQL statement must extract the distances of this matrix, based on the IDS of countries located in another table.
Select a field is simple:

SELECT * from cdistances where countryid =
(select countryid from countries where upper (country) = upper (& getcountry));

When I run the present, I get a line of all distances to all countries of the country I go when asked. But I would limit the outcome of a country of destination that I entered.

Of course, a CASE statement would solve this nicely, but since we are talking more than 200 countries, which will become unmanageable.

Another method that I approached is to use a variable as a column, as below:

SELECT & getdestination of cdistances where countryid =
(select countryid from countries where upper (country) = upper (& getcountry));

It works well when I get directly the column identifier (manually from the keyboard) but I would like to automate even further.
My names of columns in the matrix of distances are named as follows:
countries1, countries2, countries3... country200 - where the number ID the real country, preceded by the constant string 'country '.
So I tried to define a variable as a concat between 'country' and another variable:
def getd2 = concat ("D2C", & testcountryid);
Of course, it does not; the output of the script is:

old: def getd2 = concat ('country', & testcountryid)
New: def getd2 = concat ("country", 12)

where I expected to be 'country12.

I'm so little loss of thoughts. Maybe I'm pushing my train of thought in the wrong way, so I guess the general question would be: how to select a specific column of a table based on information outside the SQL statement dynamically?

Hello

I'm still confused.
Is your table called chessking or testdistances, or you have 2 separate tables?

I'm guessing that your single table is testdistances, and you want to pass a list of countryids, such as that of 3.1 to a query and get results as follows:

`COUNTRYID  DISTANCE3  DISTANCE1
---------- ---------- ----------
         1         18         15
         3         13          1

If so:

DEFINE     country_list = "3,1"

-- Preliminary Query, to set column_list
COLUMN     column_list_col     NEW_VALUE column_list

SELECT     'distance' || REPLACE ( '&country_list'
                           , ','
                     , ',distance'
                     )          AS column_list_col
FROM    dual;

-- Main Query
SELECT     countryid
,     &column_list
FROM     testdistances
WHERE     countryid     IN (&country_list)
;

Sorry, I'm out of time now. I'll explain more in a few hours.

Tags: Database

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Here is my Code AMImpl
===============
package lac.oracle.apps.lac.lacempexposure.server;

Import oracle.apps.fnd.framework.server.OAApplicationModuleImpl;
Import oracle.apps.fnd.framework.server.OAViewObjectImpl;
Import oracle.jbo.Row;
Import oracle.apps.fnd.framework.OAViewObject;
Import oracle.jbo.Transaction;

Import oracle.jbo.domain.Number;
Import oracle.apps.fnd.framework.OARow;
Import oracle.apps.fnd.common.MessageToken;
Import oracle.apps.fnd.framework.OAException;

// ---------------------------------------------------------------------
-File generated by Oracle ADF business components Design-time.
-Custom code can be added to this class.
-WARNING: do not change the methods generated method signatures.
// ---------------------------------------------------------------------
SerializableAttribute public class LacEmpExposureAMImpl extends OAApplicationModuleImpl {}

/ * This is the default constructor (do not remove)
*/
public LacEmpExposureAMImpl() {}
}

/*
*****************************************************************
* Initializes the application transient VO properties.
*****************************************************************
*/
public void init()
{

System.out.println ("in LACEmpExposureAMImpl.java IN init");
System.out.println (LacTypeMonitored);

OAViewObject appPropsVO = (OAViewObject) findViewObject ("LacExpCreatePVO1");

If (appPropsVO! = null)
{
Not reset the VO unless necessary. Note that this method
not trying to query the database for your with no SELECT statement
and only transient attributes.

If (appPropsVO.getFetchedRowCount () == 0)
{

Set the mapping size extraction to 0 to a VO in memory
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executeQuery() ensures that the lines are not lost after
validation under (workaround for known issue of BC4J) operation.

appPropsVO.setMaxFetchSize (0);
appPropsVO.executeQuery ();

You must create and insert a line in the original Version, before you start
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appPropsVO.insertRow (appPropsVO.createRow ());
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Line OARow = (OARow) appPropsVO.first ();
row.setAttribute ("RowKey", new Number (1));
}
} / / Initialization of application VO properties (and the user interface) based on the
Tracking to default value set on the underlying object Type.

handleTypeMonitoredChangeEvent();

} / / end of init()

/*
* *******************************************************
Manages the poplist TypeMonitored changes to set the
* application properties value of PRR VO
* *******************************************************
*/

Public Sub handleTypeMonitoredChangeEvent()
{
Get the properties of special application, einreihig, and make the
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OAViewObject vo = (OAViewObject) findViewObject ("LacExpCreatePVO1");
Line OARow = (OARow) vo.first ();

Get the value of the attribute of the object from view with the code TypeMonitored

OAViewObject LacEmpExposureCreateVO = (OAViewObject) findViewObject ("LacEmpExposureVO1");
OARow LacEmpExposureCreateRow = (OARow) LacEmpExposureCreateVO.getCurrentRow ();
String LacTypeMonitored = (String) LacEmpExposureCreateRow.getAttribute ("TypeMonitored");

System.out.println ("in LACEmpExposureAMImpl.java IN handleTypeMonitoredChangeEvent");
System.out.println (LacTypeMonitored);
row.getAttribute ("LocationMonitoredRender");
System.out.println (Row.GetAttribute ("LocationMonitoredRender"));

If (("Personal".equals (LacTypeMonitored)))
{
row.setAttribute ("LocationMonitoredRender", Boolean.FALSE);
row.setAttribute ("EmployeeNumberRender", Boolean.TRUE);
row.setAttribute ("FullNameRender", Boolean.TRUE);

}
else if (("Area".equals (LacTypeMonitored)))
{

row.setAttribute ("LocationMonitoredRender", Boolean.TRUE);
row.setAttribute ("EmployeeNumberRender", Boolean.FALSE);
row.setAttribute ("FullNameRender", Boolean.FALSE);
}

} / / handleTypeMonitoredChangeEvent()

/ * Main sample for debugging code of business using the tester components.
*/
Public Shared Sub main (String [] args) {}
launchTester ("lac.oracle.apps.lac.lacempexposure.server", / * name of the package * /)
("LacEmpExposureAMLocal" / * Configuration name * /);
}

/ * Getter of the container for LacEmpExposureVO1
*/
public OAViewObjectImpl getLacEmpExposureVO1() {}
return (OAViewObjectImpl) findViewObject ("LacEmpExposureVO1");
}

/ * Getter of the container for EmployeeNamesLovVO1
*/
public OAViewObjectImpl getEmployeeNamesLovVO1() {}
return (OAViewObjectImpl) findViewObject ("EmployeeNamesLovVO1");
}

/ * Getter of the container for MonitoringTypeVO1
*/
public OAViewObjectImpl getMonitoringTypeVO1() {}
return (OAViewObjectImpl) findViewObject ("MonitoringTypeVO1");
}

/ * Getter of the container for LacParameterMonitoredVO1
*/
public OAViewObjectImpl getLacParameterMonitoredVO1() {}
return (OAViewObjectImpl) findViewObject ("LacParameterMonitoredVO1");
}

/*
*******************************
* Creates a new record of the exhibition
*******************************
*/
Public Sub CreateLacEmpExposure()
{
OAViewObject vo = (OAViewObject) getLacEmpExposureVO1 ();

By coding standards, it is the right way of
initialize a VO that is used for queries and inserts.
See the objects in view in detail in the developer's Guide can do for
Additional information.

System.out.println ("in LACEmpExposureAMImpl.java IN CreateLacEmpExposure");

If (!) VO.isPreparedForExecution ())
{
vo.executeQuery ();
}
Line = vo.createRow ();
vo.insertRow (row);
Required by OA Framework model M69 coding standards

row.setNewRowState (Row.STATUS_INITIALIZED);

} / / end CreateLacEmpExposure

/*
*****************************************************************
* Performs a rollback, including the database and the middle-tier
*****************************************************************
*/
Public Sub rollbackLacEmpExposure()
{
Transaction txn = getTransaction();

This small optimization ensures that we do not have persorm a restore
If you have not to.

If (txn.isDirty ())
{
TXN. Rollback();
}
} / / end rollbackLacEmpExposure()

/ * Getter of the container for LacEmpExposureLOVDataVO1
*/
public OAViewObjectImpl getLacEmpExposureLOVDataVO1() {}
return (OAViewObjectImpl) findViewObject ("LacEmpExposureLOVDataVO1");
}

/*
* *****************************
* Commits the transaction
* *****************************
*/
public void Apply()
{
getTransaction () .commit ();
} / / end apply()

/ * Getter of the container for LacExpCreatePVO1
*/
public OAViewObjectImpl getLacExpCreatePVO1() {}
return (OAViewObjectImpl) findViewObject ("LacExpCreatePVO1");
}

/*
***********************************************************************
* Initializes the request of employee details for the Update Page.
***********************************************************************
*/
public void initDetailsUpdate (String EmployeeNumber,
String FullName,
String RecordSeq)
{

System.out.println ("in LACEmpExposureAMImpl.java IN initDetailsUpdate");

System.out.println ("LACEmpExposureAMImpl == > EmployeeNumber in initQueryUpdate is:" + EmployeeNumber);
System.out.println ("LACEmpExposureAMImpl == > FullName in initQueryUpdate is:" + FullName);
System.out.println ("LACEmpExposureAMImpl == > RecordSeq in initQueryUpdate is:" + RecordSeq);

OAViewObjectImpl vo = getLacEmpExposureVO1();

LacEmpExposureEditVOImpl vo = (LacEmpExposureEditVOImpl) getLacEmpExposureEditVO1 ();

OAViewObject vo = (OAViewObject) getLacEmpExposureVO1 ();

If (vo is nothing)
{
MessageToken [] errTokens = {new MessageToken ("parameter", "LacEmpExposureVO1")};
throw new OAException ("AK", "FWK_TBX_OBJECT_NOT_FOUND", errTokens);
}

ToL InitQueryUpdate (EmployeeNumber, FullName, RecordSeq);

Line row = vo.first ();

vo.setCurrentRow (row);

/*
Since we will interview a single row with a primary key value, we
can use the findByKey method, which first checks the cache of BC4J
and if it does not find one matching row, it will put forward a request for help
the given key and retrieve it from the database.
String [] keys = {employeeNumber};
Line lines [] = vo.findByKey (new Key (keys), 1);

You must set the current line, or the details page will not display any
data. When you explicitly query data, you don't have to do it.

If (rows! = null)
{
vo.setCurrentRow(rows[0]);
}
*/

} / / end initDetails()

/ * Getter of the container for LacEmpExposureEditVO1
*/
public LacEmpExposureEditVOImpl getLacEmpExposureEditVO1() {}
return (LacEmpExposureEditVOImpl) findViewObject ("LacEmpExposureEditVO1");
}
} / / end of class LacEmpExposureAMImpl
Hello

In your LacTypeMonitored / / I guess it will fire when you change the value of employee poplist form in area
Add logic for null value, the value of the employee
If (("Area".equals (LacTypeMonitored)))
{

row.setAttribute ("LocationMonitoredRender", Boolean.TRUE);
row.setAttribute ("EmployeeNumberRender", Boolean.FALSE);
row.setAttribute ("FullNameRender", Boolean.FALSE);

Change the attribute used to null
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}

Let me know that it works.

Thank you

With respect,
Kali.
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How to use the prompt value in the column of the report
Hello

I have a quick report column which is 'Adj Type' that contains values 10,20,30, and when the user selects Adj Type = 10, this value should be passed on to the column of the report.

For example. Value in column 1 is 10 and this should multiple with the prompt value and production is expected to be 10 * 10.

Ideas how to capture the prompt values in the column of the report for the calculation.
Hi hsekar,

(1) declare a presentation online in the section variable set Variable--> Variable--> P_var presentation

(2) in Fx Table_name. Your_column * @{P_Var}

@{P_var} {20} (20 is the default, it replaces when a user selects the value in the command prompt

Thank you
Saichand.v

Aggregated value of the column in which referencing Clause

Hello-

I am trying to determine how I can accomplish the following the most simple and effective way.

Among other things, I select the next value in my table:

max(received_date) as last_received_date

I also need to assess the value of 'last_received_date' as a condition in my where clause. However, I can't refer to my value in the column alias 'last_received_date', and when trying to evaluate max (received_date) in where clause, I get the error 'group feature is not permitted here.

Does anyone know of a good workaround?

Thank you
Christine

Hello

Maybe you can use the HAVING clause:

Example:

Connected to Oracle Database 10g Express Edition Release 10.2.0.1.0
Connected as hr

SQL>
SQL> WITH DATA as (
  2  select to_date('10/02/2009', 'dd/mm/yyyy') as received_date from dual union all
  3  select to_date('10/01/2009', 'dd/mm/yyyy') as received_date from dual union all
  4  select to_date('14/02/2009', 'dd/mm/yyyy') as received_date from dual union all
  5  select to_date('11/01/2009', 'dd/mm/yyyy') as received_date from dual union all
  6  select to_date('15/02/2009', 'dd/mm/yyyy') as received_date from dual union all
  7  select to_date('13/02/2009', 'dd/mm/yyyy') as received_date from dual
  8  )
  9  select max(received_date) from data having max(received_date) > to_date('14/02/2009', 'dd/mm/yyyy');

MAX(RECEIVED_DATE)
------------------
15/02/2009

SQL>

Kind regards

How to display the value of the column

Oracle 10g on Linux

I want to display the value of the id column in the table of www if count (distinct id) is 1. The following query is fine except that it does not display the value of the column ID help, please.

SELECT count(distinct id)
               FROM www c
              WHERE C.x_code IN (SELECT D.x_code
                                                 FROM www_app d
                                                WHERE d.y_code = '1151299386')
              having count(distinct id) = 1

I think you can use MAX in this case

SELECT max(id)
               FROM www c
              WHERE C.x_code IN (SELECT D.x_code
                                                 FROM www_app d
                                                WHERE d.y_code = '1151299386')
              having count(distinct id) = 1

Matrix of distances: selection of values with the number of the column as a variable

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