CASE clauses with BLOB returning
Hello to all,
I have a case (or Decode) that return a Blob column(IMG_ESAME):
CASE
WHEN K_ESAMEA IS NULL THEN NULL
WHEN K_ESAMEA IS NOT NULL THEN
(SELECT IMG_ESAME FROM A_PRESTA_IMG ESI
WHERE (ESI.K_SPECIAL = IP.K_SPECIAL AND ESI.K_PRESTA = IP.K_ESAMEA) )
END K_ESAMEA_IMG,
decode(K_ESAMEA,NULL,NULL,(SELECT IMG_ESAME FROM A_PRESTA_IMG ESI
WHERE (ESI.K_SPECIAL = IP.K_SPECIAL AND ESI.K_PRESTA = IP.K_ESAMEA) )) K_ESAMEA_IMG,
but I get for decode: ORA-00932: inconsistent datatypes: expected NUMBER got BLOB
and for Case: ORA-00932: inconsistent datatypes: expected CHAR got BLOB
(result_1 to result_n must all be the same datatype. This is the value returned once a condition is found to be true.,
but how can I get a null BLOB when WHEN K_ESAMEA IS NULL THEN << BLOB NULL >>
How can I solve?
Thanks in advance
Sorry Solomon,
But only now I had the opportunity to test, I continued to receive
decode: ORA-00932: inconsistent datatypes: expected NUMBER got BLOB
and for Case: ORA-00932: inconsistent datatypes: expected CHAR got BLOB
for this:
decode(
K_ESAMEA,
NULL,EMPTY_BLOB() ,
(SELECT IMG_ESAME
FROM A_PRESTA_IMG ESI
WHERE (ESI.K_SPECIAL = IP.K_SPECIAL AND ESI.K_PRESTA = IP.K_ESAMEA)
) K_ESAMEA_IMG ,
and
CASE
WHEN K_ESAMEA IS NULL THEN EMPTY_BLOB() --, TO_BLOB(NULL)
WHEN K_ESAMEA IS NOT NULL THEN
(SELECT IMG_ESAME FROM A_PRESTA_IMG ESI
WHERE (ESI.K_SPECIAL = IP.K_SPECIAL AND ESI.K_PRESTA = IP.K_ESAMEA) )
END K_ESAMEA_IMG,
K_ESAMEA is Varchar datatype
I also found this one:
+Oracle automatically converts the values for expression and compare_value to the datatype of the first comparevalue. Also the datatype of the return_value is converted to the datatype of the first return_value_*. If the first result has the datatype CHAR or if the first result is null, then Oracle converts the return value to the datatype VARCHAR2.+
Thanks anyway
Similar Messages
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Using the Case clause with Model clause
Hello PL SQL gurus
I've used some scripts I've found on these forums to create a mortgage amortization statement. What I am trying to accomplish is getting the script to run a calculation or use a value within a table based upon the value in that table.
Here are the two tables:
CREATE TABLE mortgage_facts (customer VARCHAR2(20), fact VARCHAR2(20),
amount NUMBER(10,3));
INSERT INTO mortgage_facts VALUES ('Smith', 'Loan', 131828.81);
INSERT INTO mortgage_facts VALUES ('Smith', 'Annual_Interest', 3.348);
INSERT INTO mortgage_facts VALUES ('Smith', 'Payments', 72);
INSERT INTO mortgage_facts VALUES ('Smith', 'PaymentAmt', 0);
CREATE TABLE mortgage (customer VARCHAR2(20), pmt_num NUMBER(4), principalp NUMBER(10,3), interestp NUMBER(10,3), mort_balance NUMBER(10,3));
INSERT INTO mortgage VALUES ('Smith',0, 0, 0, 131828.81);
If the value within the table mortgage_facts is zero, I want the script to run a calculation to be used in a MODEL clause. If it is not zero, I would like to use that value instead of the calculation. Below is the script that I am getting an error on (I have bolded the portion in question):
SELECT c, p, to_char(round(m,2),'fm$9999999.00') principal_balance,
to_char(round(pp,2),'fm$9999999.00') towards_principal,
to_char(round(ip,2),'fm$9999999.00') towards_interest,
to_char(round(mp,2),'fm$9999999.00') monthly_payment
FROM MORTGAGE
MODEL --See 1
IGNORE NAV
REFERENCE R ON
*(SELECT customer, fact, amt --See 2*
FROM mortgage_facts
*MODEL DIMENSION BY (customer, fact) MEASURES (amount amt) --See 3*
RULES SEQUENTIAL ORDER
CASE WHEN mortgage_facts.fact = 'PaymentAmt' AND mortage_facts.amt = 0 THEN
*amt[ANY, 'PaymentAmt'] = mortgage_facts.amt*
ELSE
*amt[any, 'PaymentAmt']= (amt[CV(),'Loan']**
*Power(1+ (amt[CV(),'Annual_Interest']/100/12),*
*amt[CV(),'Payments']) **
*(amt[CV(),'Annual_Interest']/100/12)) /*
*(Power(1+(amt[CV(),'Annual_Interest']/100/12),*
*amt[CV(),'Payments']) - 1)*
END
DIMENSION BY (customer cust, fact) measures (amt)
MAIN amortization
PARTITION BY (customer c)
DIMENSION BY (0 p)
MEASURES (principalp pp, interestp ip, mort_balance m, customer mc, 0 mp )
RULES SEQUENTIAL ORDER
ITERATE(1000) UNTIL (ITERATION_NUMBER+1 =
r.amt[mc[0],'Payments'])
(ip[ITERATION_NUMBER+1] = m[CV()-1] *
r.amt[mc[0], 'Annual_Interest']/1200,
mp[ITERATION_NUMBER+1] = r.amt[mc[0], 'PaymentAmt'],
pp[ITERATION_NUMBER+1] = r.amt[mc[0], 'PaymentAmt'] - ip[CV()],
m[ITERATION_NUMBER+1] = m[CV()-1] - pp[CV()]
ORDER BY c, p
Any help is much appreciated. Thank you!!Ok, here we go, one way with iterative model:
select *
from mortgage_facts
model
partition by (Customer)
dimension by (1 p)
measures(loan, payments, INTEREST, PAYMENTAMT, INTERESTPMT, PRINCIPALPMT, balance)
rules iterate(1e9) until (iteration_number+2 >= payments[1])
(loan[iteration_number+2]=loan[1]
,payments[iteration_number+2]=cv(p)-1
,interest[iteration_number+2]=interest[1]
,paymentamt[iteration_number+2]=ROUND(
(LOAN[1] * (INTEREST[1]/12/100)*Power((1+INTEREST[1]/12/100), PAYMENTS[1])/(Power((1+INTEREST[1]/12/100),PAYMENTS[1])-1)), 2)
,INTERESTPMT[iteration_number+2]=round(balance[cv(p)-1]*interest[1]/1200, 2)
,PRINCIPALPMT[iteration_number+2]=paymentamt[cv()]-INTERESTPMT[cv()]
,balance[iteration_number+2]=balance[cv()-1]-PRINCIPALPMT[cv()]
CUSTOMER P LOAN PAYMENTS INTEREST PAYMENTAMT INTERESTPMT PRINCIPALPMT BALANCE
Smith 1 131828.81 72 3.348 0 0 0 131828.81
Smith 2 131828.81 1 3.348 2023.55 367.8 1655.75 130173.06
Smith 3 131828.81 2 3.348 2023.55 363.18 1660.37 128512.69
Smith 4 131828.81 3 3.348 2023.55 358.55 1665 126847.69
Smith 5 131828.81 4 3.348 2023.55 353.91 1669.64 125178.05
Smith 6 131828.81 5 3.348 2023.55 349.25 1674.3 123503.75
Smith 7 131828.81 6 3.348 2023.55 344.58 1678.97 121824.78
Smith 8 131828.81 7 3.348 2023.55 339.89 1683.66 120141.12
Smith 9 131828.81 8 3.348 2023.55 335.19 1688.36 118452.76
Smith 10 131828.81 9 3.348 2023.55 330.48 1693.07 116759.69
Smith 11 131828.81 10 3.348 2023.55 325.76 1697.79 115061.9
Smith 12 131828.81 11 3.348 2023.55 321.02 1702.53 113359.37
Smith 13 131828.81 12 3.348 2023.55 316.27 1707.28 111652.09
Smith 14 131828.81 13 3.348 2023.55 311.51 1712.04 109940.05
.... -
Does the ipod nano 7th gen work with Belkin Blue tooth In car hands free? Customer support said it did when I bought it, but the box doesn't say it does and I dont want to open it in case I have to return it.
If the Belkin supports the A2DP (Stereo Bluetooth) profile then it will work.
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Case statement with having null gives default result
Hello,
When we write a case statement with a not equal condition <> on a column and if that columns has null value the it gives the else value.
eg
Select Column_Name, Case when Column_Name <>Condition then 0 else 1 end as case_test from Table_Name.
Ideally null is not equal to the condition so the case should return 0 but it returns 1. Can anyone tell me why?In addition to the other posts:
NULL is an unknown value, when you say
col <> 1
and col is NULL, we don't know whether col is 1 or something else. Thus the condition evaluates to UNKNOWN. How UNKNOWN is handled depends on the context. In WHEN clauses as well as the IF statments, the effect that the code bracketed by IF/WHEN is not
entered. That is, UNKNOWN and FALSE yields the same result. In CHECK constraints, it's the other way round. If you have
CHECK (WHEN col <> 0)
rows where col is NULL are accepted.
When you work with SQL, no matter the database product, it's imperative to master three-valued logic, because it comes up all the time.
As I said, NULL is the unknown value. In practice, NULL has a distinct interpreation depending on the database column. For instance, NULL in a column called EndDate, usually means that the period (or whatever it is) is still open. So often when you work
with NULL values you use isnull to replace it with some value that fits the context, and finding that value takes some consideration. Blindly doing isnull(col, '') can lead to serious bugs, particularly if col is not a string column.
Erland Sommarskog, SQL Server MVP, [email protected] -
Receiver File channel for XML files: with carriage return
Hi all,
we are using a receiver FILE channel to generate an XML file that is sent to an external partner.
The XML file looks good in a parser (IExplorer). But in fact there are not carriage return / line feeds between the XML tags
of the XML payload in the file.
Our partner now requires the XML file in a more vertical structure which means: for every tag a separate line (like it is displayed in a parser)
Does anybody know a more general way to convert to a vertical XML structure (so with carriage return line feed).
There is one entry in the SDN dealing with this topic but suggesting using an UDF. I think this is a very specific way.
I don't think it is a good way to change/enhance the message mapping just because of a general formating change.
Is it better to use an XSLT mapping as a second step in the interface mapping or a JAVA adapter module to convert ?
any experiences? suggestions? examples?
Thank you very much
best regards
Hans
examples:
original by XI receiver FILE adapter
<?xml version="1.0" encoding="UTF-8"?>
<MT_batchStatus><type>BS</type><header><message><messageSender>SENDER</messageSender><messageDate>20090723143720</messageDate> ... and so on
required:
<?xml version="1.0" encoding="UTF-8"?>
<MT_batchStatus>
<type>BS</type>
<header>
<message>
<messageSender>SENDER</messageSender>
<messageDate>20090723143720</messageDate>
... and so on>
Hans Georg Walter wrote:
> Is it better to use an XSLT mapping as a second step in the interface mapping or a JAVA adapter module to convert ?
> any experiences? suggestions? examples?
In such a case, the best is to write an generic XSLT or Java mapping that will attempt to do the pretty printing/formatting of the xml.
The advantage of a generic one is that you can reuse the same class/jar for many other scenarios.
so the flow will be as below in your interface mapping;
1. your specific source to target mapping
2. the generic formatting class -
Order By Clause with Empty Field values !
Hello,
In Oracle , the order by clause does not return the expected query result, if any of the field value in the order by clause has an empty string.
Oracle treats the empty string as null value and ORDER BY gives a result with the empty string field values listed at last.
For example :
test is a sample table containing "name" field.
Query: "select name from test order by name"
In SQL Server/Access
Result (1)
NAME
(blank)
(blank)
User1
User2
User3
In Oracle
Result (2)
NAME
User1
User2
User3
(blank)
(blank)
I know some of the Work arounds for this as listed below :
1) To use NVL in Order By Clause.
i.e., the modified query
"select name from test order by nvl(name,0)"
gives the result same as Result (1).
2) To have single blank space in the field value if it is empty.
I dont want to use either of these two options b'se it would lead to a mass change in my existing code.
Is there any way i can do a
collation order settings in the Oracle databases to get the results as in MS SQL/Access.
Can Any help me out in Solving this?
Thanks
Devi Shankar
nullBharath,
I am moving this question to the SQL forum.
Regards,
Geoff -
SQL IN clause with a Tool variable
We are using using Forte 3.M.2 (just upgraded from 3.G, finally).
Platform is AIX 4.3. Database is DB2 (UDB) (version 5.2 i think).
True, I haven't tried my code on any other platform. I think it should work on NT, because one of our other teams members has set up an NT laptop for portable demos. And it has DB2 (NT version i guess) loaded on it.
Dynamic sql is not really that bad, if you have to go that route to build your list.
Let me know how it goes.
Steven Barnes
Daniel González de Lucas <danieleam.es> 07/28/00 04:06AM >>>We are getinng some trouble, the DB Manager seems to try to convert
:OfficeList to a unique integer lets say:
:OfficeList value is 3,4,7
so the IN clause
trying with Oracle 8.1.5 converts 3,4,7 in a unique integer (a extrange
value because doesn't match with 3,4 nor 7).
trying with SQL Server 6.5 gives an error converting 3,4,7 to a unique
tinyint.
The idea is that with your sintax the DB Manager must split the TextData
into 3 integer values. I think that it works fine in some DB Managers and
not in others.
Which release and vendor of DB Manager you use?
Which Forté release?
Thank you very much in advance.
Daniel.
----- Original Message -----
From: "Steve Barnes" <DHS9126dhs.state.il.us>
To: <danieleam.es>; <kamranaminyahoo.com>
Sent: Thursday, July 27, 2000 1:55 PM
Subject: Re: (forte-users) SQL IN clause with a Tool variable
I needed to have an "IN" clause for some numbers. Here's how I did it:
GetOffices():TextData method...
Offices : TextData = new ;
for (x : integer) in sql select MyIntegerColumn
from MY_TABLE
where whatever condition
on session MyDBSession do
Offices.Concat(x) ;
Offices.Concat(',') ;
end for ;
return (Offices.CopyRange(0,Offices.ActualSize -1)) ; // get rid of lastcomma
in actual sql.....
OfficeList : TextData ;
OfficeList = GetOffices() ;
sql select * from MyTable where MyField in (:OfficeList)
on session MyDBSession ;
Works very well.
Steven Barnes
Daniel González de Lucas <danieleam.es> 07/27/00 05:32AM >>>Hello,
To do a select we have two options:
select * from MyTable
where MyField in ('a','b','c')
we would like to do the same but using a forté variable in the IN clause.
select * from MyTable
where MyField in (:ToolVar)
What should we do and what kind of variable or array of variables shouldwe use in ToolVar to do the same than in first option?
>
Has anybody done this without a dynamic query?
Best regards
Daniel
For the archives, go to: http://lists.xpedior.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in a new
email the word: 'Unsubscribe' to: forte-users-requestlists.xpedior.com -
SQL IN clause with Bind parameter?
Hi
I have a simple task that hasn't been so simple to figure out. I want to allow a user to search for one or more comma-separated values in a simple JClient ADF app. Is there a way to use a SQL IN clause with a single bind variable? e.g. SELECT TITLE FROM CITATION WHERE ID IN (:0)
When I pass a single value it works fine but a comma separated list doesn't.
Thanks
JohnUpdate: I wanted to combine the techniques found in two of Steve Muench's articles -
1) Providing Default Values for View Object Bind Variables (so I could display an ADF-bound JPanel with defaults)
http://radio.weblogs.com/0118231/stories/2004/10/07/providingDefaultValuesForViewObjectBindVariables.html
2) Array of String Domain Example (so a user could enter one or more comma-separated values into a text box for DB searches)
http://radio.weblogs.com/0118231/stories/2004/09/23/notYetDocumentedAdfSampleApplications.html
I learned some helpful stuff about the framework but spent lots of time banging my head against the wall because the two examples wouldn't work when directly combined. To best understand this, be sure to study Steve's examples above.
In example 1 Steve passes an array of objects (Object[] DEFAULT_VALUES) to the ViewObject's where clause using the setWhereClauseParams(Object[] values). However, in example 2 he creates an Oracle Array which contains an Oracle ArrayDescriptor, Connection, and array of values to pass to the "IN" bind variable. Also, example 1 allows for multiple bind vars to be included whereas example 2 allows for an array of data to be passed to a single bind var. Even though my code provides an array to a single bind var (per ex. 2) it should still allow for the passage of multiple bind vars with minimal code modification.
Code from Steve's example 1 was copied into my EmpView ViewObject but certain modifications were necessary:
1) Change the ViewObject's DEFAULT_VALUES from Object[] to String[].
2) Modify the executeQueryForCollection() method in the ViewObject to call a function which will set the bind variables as Oracle Arrays (effectively converting the "params" data type from that of String[] to Oracle Array[])
3) Create a setManagerID(String[]) method in the EmpView object and expose it to the client.
(there are a number of others so it's best for you to go through the code and compare)
I finally got it working so I'm attaching the code, however beware - I'm new to this so there may be other, better ways to go about it. Also, there are no framework bind vars so that section of code is never executed...it compiles but may fail at run time.
In order for this to work I suggest you use JDev to re-create the EmpView and Panel1 objects. This will ensure that the necessary ADF framework components are generated. Once complete, then copy in the code provided.
*File: EmpViewImpl.java
*Created as Read-Only access view object with the
*query:
*select manager_id, last_name from hr.employees
*where manager_id IN
*(select * from TABLE(CAST(:0 as TABLE_OF_VARCHAR)))
*order by manager_id
package model;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import oracle.jbo.domain.Array;
import oracle.jbo.server.ViewObjectImpl;
import oracle.sql.ArrayDescriptor;
// --- File generated by Oracle ADF Business Components Design Time.
// --- Custom code may be added to this class.
// --- Warning: Do not modify method signatures of generated methods.
public class EmpViewImpl extends ViewObjectImpl implements model.common.EmpView
private ArrayDescriptor descriptor;
private final static String[] DEFAULT_VALUES_STRING = new String[]{"100"};
private final static int NUM_DEFAULT_VALUES = DEFAULT_VALUES_STRING.length;
* This is the default constructor (do not remove)
public EmpViewImpl()
protected void executeQueryForCollection (Object qc, Object[] params, int numUserParams)
Object pars[] = null;
// Bind default variables only if none have been provided by the user
if (numUserParams == 0)
numUserParams = NUM_DEFAULT_VALUES;
int numFwkSuppliedBindVals = (params != null) ? params.length : 0;
if (numFwkSuppliedBindVals > 0)
// Allocate a new Object[] array with enough room for both user- and framework-supplied vars
Object[] newBinds = new Object[numFwkSuppliedBindVals + numUserParams];
// Copy the framework-supplied bind variables into a new Object[] array
// leaving enough slots at the beginning for the user-supplied vars
System.arraycopy(params, 0, newBinds, numUserParams, numFwkSuppliedBindVals);
// Now copy in the user-supplied vars to the beginning of the array
System.arraycopy(DEFAULT_VALUES_STRING, 0, newBinds, 0, numUserParams);
params = newBinds;
} else
params = DEFAULT_VALUES_STRING;
// We have to call this method to convert the default values into the proper Oracle Array expected by the query.
// If you set a debugger breakpoint at this line you can see that the "params" data type changes from String[] to Object[]
setWhereClauseParamsToDefaultValues();
// Now retrieve the params of the new data type
params = this.getWhereClauseParams();
super.executeQueryForCollection(qc, params, numUserParams);
private void setWhereClauseParamsToDefaultValues()
this.setManagerID(DEFAULT_VALUES_STRING);
private Connection getCurrentConnection() throws SQLException
// Create a bogus statement so that we can access our current connection
// JBD note - Does this get run each time??
PreparedStatement st = getDBTransaction().createPreparedStatement("commit", 1);
Connection conn = st.getConnection();
st.close();
return conn;
private synchronized void setupDescriptor(Connection conn) throws SQLException
descriptor = new ArrayDescriptor("TABLE_OF_VARCHAR", conn);
* setManagerID
* Exposed to client to accept an array of values (presumably passed in by user-entry into text box
* @param aryMan
public void setManagerID(String[] aryMan)
Array arr = null;
try
// Find the connection
Connection conn = getCurrentConnection();
//Create the ArrayDescriptor by looking for our custom data type in our connected DB
if(descriptor == null)
setupDescriptor(conn);
// Create the Oracle Array by passing in the descriptor, connection, and object array of data
arr = new Array(descriptor, conn, aryMan);
} catch (SQLException se)
System.out.println("SQL Exception: " + se.getMessage());
// Now we can set the WHERE clause parameter bind variable (index = 0) to the Oracle Array
if (arr != null) setWhereClauseParam(0, arr);
* FILE: Panel1.java
* Created as an empty panel. Then a JTextField, a
* JButton, and an EmpView1 table were dragged on.
* A custom actionPerformed method was created for the
* JButton which grabs the data from the text box.
* The user can enter either a single manager id or
* multiple, comma-separated ids.
* All code in this class was created by JDev except
* for the Jbutton action
package view;
import java.awt.*;
import javax.swing.*;
import model.common.*;
import oracle.jbo.ApplicationModule;
import oracle.jbo.SQLStmtException;
import oracle.jbo.uicli.jui.*;
import oracle.jbo.uicli.controls.*;
import oracle.jbo.uicli.binding.*;
import oracle.jdeveloper.layout.*;
import oracle.adf.model.*;
import oracle.adf.model.binding.*;
import java.util.ArrayList;
import oracle.jdeveloper.layout.VerticalFlowLayout;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.JTable;
import javax.swing.table.TableModel;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
public class Panel1 extends JPanel implements JUPanel
* NOTE: You need to have previous created the Oracle8 type named
* ==== TABLE_OF_VARCHAR by doing the following at the SQL*Plus
* command prompt:
* create type table_of_varchar as table of varchar2(20)
// Panel binding definition used by design time
private JUPanelBinding panelBinding = new JUPanelBinding("Panel1UIModel");
private VerticalFlowLayout verticalFlowLayout1 = new VerticalFlowLayout();
private JTextField jTextField1 = new JTextField();
private JButton jButton1 = new JButton();
private JTable jTable1 = new JTable();
* The default constructor for panel
public Panel1()
* the JbInit method
public void jbInit() throws Exception
this.setLayout(verticalFlowLayout1);
jTextField1.setText("jTextField1");
jButton1.setText("jButton1");
jButton1.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent e)
jButton1_actionPerformed(e);
this.add(jTextField1, null);
this.add(jButton1, null);
this.add(jTable1, null);
jTable1.setModel((TableModel)panelBinding.bindUIControl("EmpView1", jTable1));
public static void main(String [] args)
try
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
catch(Exception exemp)
exemp.printStackTrace();
Panel1 panel = new Panel1();
panel.setBindingContext(JUTestFrame.startTestFrame("DataBindings.cpx", "null", panel, panel.getPanelBinding(), new Dimension(400, 300)));
panel.revalidate();
* JUPanel implementation
public JUPanelBinding getPanelBinding()
return panelBinding;
private void unRegisterProjectGlobalVariables(BindingContext bindCtx)
JUUtil.unRegisterNavigationBarInterface(panelBinding, bindCtx);
private void registerProjectGlobalVariables(BindingContext bindCtx)
JUUtil.registerNavigationBarInterface(panelBinding, bindCtx);
public void setBindingContext(BindingContext bindCtx)
if (panelBinding.getPanel() == null)
panelBinding = panelBinding.setup(bindCtx, this);
registerProjectGlobalVariables(bindCtx);
panelBinding.refreshControl();
try
jbInit();
panelBinding.refreshControl();
catch(Exception ex)
panelBinding.reportException(ex);
private void jButton1_actionPerformed(ActionEvent e)
// Get the user-supplied values
String txt = jTextField1.getText();
String[] mIds = txt.split(",");
// Now trim
for (int i=0; i<mIds.length; i++)
mIds[i] = mIds.trim();
ApplicationModule am = (ApplicationModule)panelBinding.getDataControl().getDataProvider();
EmpView vo = (EmpView)am.findViewObject("EmpView1");
vo.setManagerID(mIds);
try
vo.executeQuery();
} catch (SQLStmtException s)
System.out.println("Query failed: " + s.getMessage()); -
SQL statement with Function returns slow in Interactive Report
I have an Interactive Report that returns well but when I add in a function call in the where clause that does nothing but return a hard coded string of primary keys and is compared to a table's primary key with a like operator the performance tanks. Here is the example:
get_school2_section(Y.pk_id,M.pk_id,I.section,:P577_SECTION_SHUTTLE) LIKE '%:' || I.pk_id || ':%'
I have the values hard coded in the return of the function. There are no cursors run in the function, there is no processing done in the function. It only declares a variable. Sets the variable, and returns that variable back to the SQL statement.
I can hard code the where clause value to look like this:
':90D8D830A877CCFFE040010A347D1A50:8ED0BBFDEAACC629E040010A347D6471:9800B8FDBD22B761E040010A347D0D9A:' LIKE '%:' || I.pk_id || ':%'
This returns fast. When I add in the function call which returns the same hard coded values, the page goes from returning in 1 to 2 seconds to 45 or more seconds.
Why does adding a simple function call into the where clause cause such a deterioration in performance.
Edited by: alamantia on Aug 17, 2011 7:39 AM
Edited by: alamantia on Aug 17, 2011 7:40 AMSo you are telling me that the where clause with a function call will NOT run the function on every row? Please explain that to me further?
if you have code that is the following:
select a,b,c from a_table where a > 2 and b < 3 and function_call(c) > 0You are telling me that Oracle will NOT call that function on EVERY row it tries to process in the select?
Thank you,
Tony Miller
Webster, TX
I cried because I did not have an office with a door until I met a man who had no cubicle.
-Dilbert
If this question is answered, please mark the thread as closed and assign points where earned.. -
Hi,
I have a requirement where I need to display a list of employees, performance rating and manager id. I want to display the emplyees first whos manager is as manager_id as input parameter. So lets say a manager logs in, he should see his reportees first and then therest. How can I implemet this in SQL? I am trying first clause with order by but not sure how to do that here. A help on this would be appreciated.
procedure
display_list(manager_id in varchar2)
Output is:
emp_id
manager_id
performance_rating
Edited by: Nandini on Apr 28, 2013 10:48 PMYou can use a CASE statment, which will check the MANGER_ID column against the passed manager id value, as shown below..
order by
case when manager_id = :input_manager_id then 0
else 1
end,manager_id,performace_rating desc -
Mysterious where clause with japanese
enviroment:
PL/SQL Develope, Version 7.1.0.1337, Windows XP Professional 5.1 Build 2600 (Service Pack 2)
Here is the problem, when i add a where clause with japanese, the data evaporated:
SQL> select * from ja_test;
EXECUTABLE_NAME DESCRIPTION
XX00MRP0411C 需要供給データ作成マネージャ
SQL> select * from ja_test j where j.description = '需要供給データ作成マネージャ';
EXECUTABLE_NAME DESCRIPTION
SQL>
thanks in advance!Thanks for replies and Sorry for my rashness, maybe the following
scripts could explain the problem more well. I create a table named
ja_test with two fields(EXECUTABLE_NAME and DESCRIPTION), both of the
type is varchar2, and there is only one record in the table,
but the DESCRIPTION contains JAPANESE characters, when i use a where
clause like this "where j.executable_name = 'XX00MRP0411C';", everything
seems work fine, but when the where clase include JAPANESE characters
like this "j.description = '需要供給データ作成マネージャ';", even if
the "j.description" is copied form database, no records returned:
SQL> select * from ja_test j where j.executable_name = 'XX00MRP0411C';
EXECUTABLE_NAME DESCRIPTION
XX00MRP0411C 需要供給データ作成マネージャ
SQL> select * from ja_test j where j.description = '需要供給データ作成マネージャ';
EXECUTABLE_NAME DESCRIPTION
SQL> desc ja_test;
Name Type Nullable Default Comments
EXECUTABLE_NAME VARCHAR2(30)
DESCRIPTION VARCHAR2(240) Y
SQL> -
Problem with BLOB data type and acute characters
Hi all, I have an issue related with BLOBS cols:
I have table A with a BLOB column and I need to insert that data into another table B, the thing is I use dbms_lob.read() that returns data into a RAW variable and then I convert it to a varchar2(with utl_raw.cast_to_varchar2) and it works ok if I have no "acute characters" on it, e.g Québec.
If I have acute characters, the "é" is inserted wrongly with an "¿" character on the table B. I tested the BLOB on the table A to check the data and the BLOB is showing correctly the "é" character, it seems that the dbms_lob.read() funct cannot handle accute characters and replace them with "¿".
How can I replace acute characters when I use the dbms_lob.read functionality?
Thank you!what's the OS of the db server? is this code an anonymous pl/sql block, or stored pl/sql? does it run on the server or a client? if it's on the client, what's the o/s of the client?
you might want to look at the following, plus the first 3 notes in it's reference section
https://metalink.oracle.com/metalink/plsql/f?p=130:14:3038746456038321058::::p14_database_id,p14_docid,p14_show_header,p14_show_help,p14_black_frame,p14_font:NOT,264157.1,1,1,1,helvetica -
Same functions with different return types in C++
Normally the following two functions would be considered the same:
int getdata ( char *s, int i )
long getdata ( char *s, int i )
Every other compiler we use would resolve both of these to the same function. In fact, it is not valid C++ code otherwise.
We include some 3rd party source in our build which sometimes messes with our typedefs causing this to happen. We have accounted for all of the function input types but never had a problem with the return types. I just installed Sun ONE Studio 8, Compiler Collection and it is generating two symbols in our libraries every time this occurs.
Is there a compiler flag I can use to stop it from doing this? I've got over 100 unresolved symbols and I'd rather not go and fix all of them if there is an easier way.Normally the following two functions would be
considered the same:
int getdata ( char *s, int i )
long getdata ( char *s, int i )Not at all. Types int and long are different types, even if they are implemented the same way.
Reference: C++ Standard, section 3.9.1 paragraph 10.
For example, you can define two functions
void foo(int);
void foo(long);
and they are distinct functions. The function that gets called depends on function overload resolution at the point of the call.
Overloaded functions must differ in the number or the type of at least one parameter. They cannot differ only in the return type. A program that declares or defines two functions that differ only in their return types is invalid and has undefined behavior. Reference: C++ Standard section 13.1, paragraph 2.
The usual way to implement overloaded functions is to encode the scope and the parameter types, and maybe the return type, and attach the encoding to the function name. This technique is known as "name mangling". The compiler generates the same mangled name for the declaration and definition of a given function, and different mangled names for different functions. The linker matches up the mangled names, and can tell you when no definition matches a reference.
Some compilers choose not to include the return type in the mangled name of a function. In that case, the declaration
int foo(char*);
will match the definition
long foo(char*) { ... }
But it will also match the definitions
myClass foo(char*) { ... }
double foo(char*) { ... }
You are unlikely to get good results from such a mismatch. For that reason, and because a pointer-to-function must encode the function return type, Sun C++ always encodes the function return type in the mangled name. (That is, we simplify things by not using different encodings for the same function type.)
If you built your code for a 64-bit platform, it would presumably link using your other compilers, but would fail in mysterious ways at run time. With the Sun compiler, you can't get into that mess.
To make your program valid, you will have to ensure your function declarations match their definitions. -
Dynamic select list with display,return val & join condition issue.
hello,
I am having a dynamic select list with display, return value
say for example my select statement is
select distinct dname d, deptno r
from dept dt
right join emp e on (e.deptno=dt.deptno)
where (condition)
when i tried this query for my select list, it is not working. It saying that
" LOV query is invalid, a display and a return value are needed, the column names need to be different. If your query contains an in-line query, the first FROM clause in the SQL statement must not belong to the in-line query. "
I am not able to understand the problem. Can anyone help me out with this issue?
thanks.Shouldn't your join have dept as the driving table?
select distinct dname d, deptno r
from dept dt
right join emp e on (dt.deptno = e.deptno)
where (condition)
Or using older Oracle standard join
select distinct dname d, deptno r
from dept dt, emp e
where (dt.deptno (+) = e.deptno) AND (OTHER WHERE condition)
OR
(Since a right join is just getting the values from the driving table that are NOT in the associated table)
select distinct dname d, deptno r
from dept dt
WHERE dt deptno NOT IN (SELECT deptno FROM emp) AND (OTHER where condition)
Thank you,
Tony Miller
Webster, TX -
Distinct SQL clause with Recordset object
Hi all, I was using a recordset with an sql distinct clause, on SAP B1 SP:0
Now we have updated to SP1, and it seems like recordset query doesnt works well with the distinct clause.
It returns all values.
Does anybody tried to use this clause with SP1?
Thanks.Hi,
The DISTINCT clause by itself is NOT working in recordsets. You have to programatically make sure that you have the distinct records. So, if you're adding distinct records to a combo box you can either check if it exists before you add it or you can add a try... catch block around it that just catches the error (without displaying anything) when you add to a combo box.
Hope it helps,
Adele
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