Can a Function return a table ?

I tried to define a function that should return a table but it seems impossible.
Is it or not ? If not which is the correct syntax of CREATE FUNCTION ?

follow these steps I thinks this should work
1. Create a TYPE of record type ( the stru of the table which U want)
TYPE REQ_TABLE_REC IS RECORD (COL1 VARCHAR2(16),
COL2 NUMBR(4),
2. declare a table of type Record type
TYPE REQ_TABLE_TAB_TYPE IS TABLE OF REQ_TABLE_REC INDEX BY BINARY_INTEGER;
3. DECLARE A VARIABLE OF TYPE TABLE_TYPE
REQ_TABLE_TAB REQ_TABLE_TAB_TYPE;
4. Use REQ_TABLE_TAB as a variable,wherever req send it to a function get it from a function. populate it with a cursor.... etc
Hope This answers yr q:
Ref records and collections in Oracle documentation
Ashok

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BCG Brightness Contrast Gamma - Looking for BCG function returning color table / lookup table coded in pure G and applicable to Intensity Graph or Picture Control

Looking for BCG function returning color table / lookup table coded in
pure G and applicable to 8-bit Intensity Graph or Picture Control. Do
not want to use IMAQ Vision is this particular application. Any
help is appreciated.
Sincerely,
Don

Take a look at this color model software I put together. (Don't concern yourself much with the basic programming at this point.). The color component generator subVI is borrowed from a LabVIEW example.
First look at test_color2.vi. If you adjust the sliders of the various controls, you will see how it works. You can see that for pure B&W images, brightness, contrast, and gamma (which I think I have coded correctly) are all fairly straightforward to modify.
Now look at test_color3.vi. Here we try to adjust BCG for color images using the color model shown here where current color component clusters are carried into the BCG event cases via shift registers. You can see that once color is introduced into the image, it becomes difficult to mix the colorizing with the BCG model. And this is pretty much where I am right now.
Would be interested in comments / suggestions.
Sincerely,
Don
Attachments:
test_color2.llb ‏2251 KB

Can oracle function return more than one value

Hi All
please answer can oracle function return more than one value
need one schenario
regards

Can any function, irrespective of the language, return multiple values?
OF COURSE NOT!!
So why do you think Oracle will now suddenly do it differently than all other languages? Never mind that it is impossible for a function (a unit/module of code) returning a memory address, to return multiple memory addresses. The machine code that does that, has not been yet been designed/implemented.
I am continually amazed that this question is asked. It is about something so fundamental in almost every single 3rd and 4th generation language... something that is taught right at the start... the definition of what a procedure and what a function is.
Sorry, but I simply cannot pull punches on this subject and smooth it over. There is something fundamentally wrong with your training as a programmer if you have to ask such a question about a function.
And whatever programming skills you build on such a foundation, will be seriously lacking.
I kindly suggest that you get back to the very basics of programming - and review and revisit until you fully understand it. There are no shortcuts in becomming a good programmer.
Message was edited by:
Billy Verreynne

Can a function return two values???

Hi guys can a function return more than values?

Or even better return an Object.
ie
public class Tester{
     public static Multi getM()
          Multi m=new Multi();
          m.x="testing";
          m.y="new value";
     public static void main(String [] args)
          Multi mt=getM();
          System.out.println(mt.x);
          System.out.println(mt.y);
     class Multi{
          public String x;
          public String y;
}

How can a function return a constant reference to an object

how can a function return a constant reference to an object so that the calling party dont have rights to change it.
like this example
class obj = somefunc();
obj.changeit(); // this line lust give error saying that its read only..
somefunc()
return criticalobj;
in c++ we can achieve this by using the const pointer to the object.. how can we do this in java???

arun160411 wrote:
in c++ we can achieve this by using the const pointer to the object.. how can we do this in java???Of course the first thing anyone learns about const pointers is how to cast away constness, so this is completely useless, up there with the chastity movement's thong underwear with the stop sign on it. If you can read this, you're too close!

Can Evaluate function return object type

Hi
Evaluate function can be used to call db functions in OBIEE. I have a function which returns an object ( pl/sql table).
Created a simple report in Oracle Answers and added following in one of the columns
evaluate( 'get_ccid(%1)' as t_ccid , @{p_request})
When I try to run this in Oracle answers, getting syntax error. If same function returns varchar or number it works well.

evaluate( 'get_ccid(%1)' as t_ccid , @{p_request})Eakta, You syntax seems to be wrong here. What type of data your presentation variable contains here ?? You are saying its working fine with Number datatype..so can you try..somthing like below with some default value..
EVALUATE('get_ccid(%1)',@{p_request}{2})
OR
EVALUATE('get_ccid(%1)' as varchar(250),@{p_request}{ABC})
Also, refer
Syntax for Evaluate function in OBIEE
http://108obiee.blogspot.com/2009/04/using-presentation-variable-from-first.html
Hope its useful

Can stored function return record type or cursor type?

Hi everybody,
I am working with a stored function now.
Can the function output more that ONE result? i.e. cursor or record type.
Thanks.
Brigitta.

Brigitta,
If you are calling the stored function from SQL then the function can only return one of the base datatypes, as Murali has said. However, if you are calling the function from PLSQL you can return any complex datatype, eg:
package test_package is
type rec_test is
( col_a number
, col b varchar2(30) );
type tab_test is
table of rec_test
index by binary ineteger;
function test_function (.....)
return tab_test;
end test_package;and to call this function:
declare
l_table test_package.tab_test;
begin
l_table := test_package.test_function(....);
end;Hope that helps!

Calling a PL/SQL function returning Netsed Table Rows

Hi,
I am trying to call a Function which returns Nested Table rows (as Out Parameter) in Java .
When I am trying to use
pstmt.registerOutParameter(3, OracleTypes.OTHER);
to capture the Out parameter in Java code , I get the follwoing error :
java.sql.SQLException: Invalid column type
I have even tried using OracleTypes.JAVA_OBJECT ,but I get the same error.
If I use OracleTypes.JAVA_STRUCT I get
java.sql.SQLException: Parameter Type Conflict: sqlType=2008
error.
Please help .
Am I doing the right thing ?
Thanks in advance.
Ninad

http://www.oracle.com/technology/sample_code/tech/java/sqlj_jdbc/files/jdbc20/jdbc20.html

Can pipelined functions' return values be used in WHERE clause?

If I have function MY_FUNC that returns a REFCURSOR with columns COL1, COL2, COL3
can I use the values returned in the output cursor in my WHERE clause as well as in the SELECT clause?
e.g.
SELECT COL1, COL2, COL3
FROM TABLE(MY_FUNC(param1, param2))
WHERE COL1 = 24 AND COL2=25
Would that be proper SQL?

Hi,
SQL> Create OR Replace Package Pkg_Test_ Is
2
3     Type my_typ Is Table Of Number;
4
5     Function fnc_test Return my_typ Pipelined;
6
7 End;
8 /
Package created
SQL> Create OR Replace Package Body Pkg_Test_ Is
2
3     Function fnc_test Return my_typ
4        Pipelined Is
5        va_typ my_typ := my_typ();
6     Begin
7        For i IN 1 .. 10 Loop
8           va_typ.Extend;
9           va_typ(va_typ.Count) := i;
10           Pipe Row(va_typ(va_typ.Count));
11        End Loop;
12        Return;
13     End;
14
15 End;
16 /
Package body created
SQL> SELECT *
2    FROM Table(PKG_TEST_.FNC_TEST)
3   WHERE COLUMN_VALUE > 5
4 /
COLUMN_VALUE
           6
           7
           8
           9
          10Regards,
Christian Balz

How can a function returning character length greater than 4000 be selected in SQL

Hi,
I want to know if there is a way to write a select query on a function call which returns a varchar of more than 4000 characters.
CREATE OR REPLACE FUNCTION FUNC1
RETURN VARCHAR2
IS
str VARCHAR2(32767);
BEGIN
str := <some string greater than 4000 char>;
RETURN str;
END;
SELECT FUNC1 from dual; ---- This gives an PL/SQL numeric or value error. Character string buffer too small.
Is there any way to resolve this?
Thanks

32767 is not default. The default is still 4000 for VARCHAR2. You need to set the initialization parameter MAX_STRING_SIZE= EXTENDED for 32767.
Text from Oracle documentation
Extended Data Types
Beginning with Oracle Database 12c, you can specify a maximum size of 32767 bytes for the VARCHAR2, NVARCHAR2, and RAW data types. You can control whether your database supports this new maximum size by setting the initialization parameter MAX_STRING_SIZE as follows:
If MAX_STRING_SIZE = STANDARD, then the size limits for releases prior to Oracle Database 12c apply: 4000 bytes for the VARCHAR2 and NVARCHAR2 data types, and 2000 bytes for the RAW data type. This is the default.
If MAX_STRING_SIZE = EXTENDED, then the size limit is 32767 bytes for the VARCHAR2, NVARCHAR2, and RAW data types.

Can a function return more than one item or object?

Hi I am trying to move text movies and textfields around a stage. This is a learning curve for me. I am confused by an example I have found on the internet.
http://forums.adobe.com/community/flash/flash_actionscript
What type of object is
var letter:Object = getLetterObject(_text.charAt(i)); // in the draw function
as it has properties
letter.stepDegrees = _totalAngle / numOfLetters;
getLetterObject()
seems to return lotts of stuff which would not be done in other languages like C
return
movie:movie,
field:field,
widthInDegrees:0,
fieldWidth:field.width,
fieldHeight:field.height
I would like to get my head around this as this is a good example of what I need. Well parts of it actualy.
I understand that the text field is added as a child to the Movieclip. I would have expected just a MovieClip object returned.
full code including the function getLetterObject()
=======
package
import flash.display.DisplayObject;
import flash.display.MovieClip;
import flash.geom.Rectangle;
import flash.text.TextField;
import flash.text.TextFieldAutoSize;
import flash.text.TextFormat;
import flash.text.TextFormatAlign;
public class CurvedText extends MovieClip
public static const DIRECTION_UP:String = "up";
public static const DIRECTION_DOWN:String = "down";
public var showLetterBorder:Boolean = false;
public var showCurve:Boolean = false;
private var _letterHolder:MovieClip;
private var _text:String;
private var _radius:Number;
private var _letters:Array;
private var _widthOfText:Number = 0;
private var _startAngle:Number = 0;
private var _endAngle:Number = 360;
private var _totalAngle:Number = 0;
private var _textFormat:TextFormat;
private var _direction:String;
public function CurvedText(text:String = "", radius:Number = 200, startAngle:Number = 0, endAngle:Number = 360, direction:String = "up", textFormat:TextFormat = null)
_text = text;
_radius = radius;
_startAngle = startAngle;
_endAngle = endAngle;
_direction = direction;
_textFormat = textFormat;
_letters = [];
_totalAngle = Math.abs(_startAngle) + Math.abs(_endAngle);
public function draw():void
// checking if there is any text set
if(_text == "")
return;
// clearing the letters' holder
if(_letterHolder && contains(_letterHolder))
removeChild(_letterHolder);
_letterHolder = new MovieClip();
addChild(_letterHolder);
// adding letters
var numOfLetters:int = _text.length;
for(var i:int=0; i<numOfLetters; i++)
var letter:Object = getLetterObject(_text.charAt(i));
letter.stepDegrees = _totalAngle / numOfLetters;
_letters.push(letter);
_widthOfText += letter.fieldWidth;
_letterHolder.addChild(letter.movie);
// positioning
position();
// draw the curve
if(showCurve) {
_letterHolder.graphics.lineStyle(1, 0xFF0000, 1);
_letterHolder.graphics.drawCircle(0, 0, _radius);
private function getLetterObject(letter:String):Object
// setting default text format
if(!_textFormat)
_textFormat = new TextFormat();
_textFormat.align = TextFormatAlign.CENTER;
_textFormat.font = "Verdana";
_textFormat.size = 12;
_textFormat.color = 0x000000;
// creating the field
var movie:MovieClip = new MovieClip();
var field:TextField = new TextField();
field.width = 10;
field.defaultTextFormat = _textFormat;
field.embedFonts = true;
field.multiline = false;
field.autoSize = TextFieldAutoSize.CENTER;
field.text = letter;
field.x = -field.width / 2;
field.y = -field.height / 2;
if(showLetterBorder)
field.border = true;
movie.addChild(field);
return // RETURNS more than one value?
movie:movie,
field:field,
widthInDegrees:0,
fieldWidth:field.width,
fieldHeight:field.height
private function position():void
// position the letters
var numOfLetters:int = _letters.length;
var degrees:Number = _startAngle;
for(var i:int=0; i<numOfLetters; i++)
var angle:Number = _letters[i].stepDegrees + degrees;
if(_direction == DIRECTION_DOWN)
angle -= 180;
_letters[i].movie.scaleY = -1;
} else {
xValue = _radius * Math.cos((angle-90)/180*Math.PI);
yValue = _radius * Math.sin((angle-90)/180*Math.PI);
var xValue:int = _radius * Math.cos((angle-90)/180*Math.PI);
var yValue:int = _radius * Math.sin((angle-90)/180*Math.PI);
_letters[i].movie.x = xValue;
_letters[i].movie.y = yValue;
_letters[i].movie.rotation = angle;
degrees += _letters[i].stepDegrees;
// position the holder
var bounds:Rectangle = _letterHolder.getBounds(this);
_letterHolder.x = -bounds.x;
_letterHolder.y = -bounds.y;
if(_direction == DIRECTION_DOWN)
_letterHolder.scaleX = -1;

Hi
I still think I need an Object parent child linkage diagram on this to get my head around it.
It seems that things are reversed so that it is Object:value. Kind of confusing to see movie:movie.
var letter:Object = getLetterObject(_text.charAt(i));
letter holds the following objects
MovieClip:Movie
TextField:field
widthInDegrees:0 // What is this. What type is a widthInDegrees
fieldWidth:field.width // Same as above
fieldHeight:field.height // Same as above
And to cap it all, back in the calling function draw()
letter.stepDegrees = _totalAngle / numOfLetters; // What is stepDegrees a property of? MovieClip,TextField,widthInDegrees,fieldWidth or fieldHeight
I can understand the first two but not the last three
For example widthInDegrees is not mentioned anywhere in the code. and
letter.stepDegrees // implies that stepDegrees is a property of Object:letter.
Do you throw a property and value blindly at the letter object and let flash work out which object it is a property of?
MovieClip & TextField do not have this property. Searched the web for this information. We need an equivelent of MSDN.
Desmond.

Need to return dynamic column names for a function returning nested table

I am having a pl/sql function which is returning a nested table.
For this i have defined an object which is having 4 attributes- 1 number type, 3 varchar2 type -p1,p2,p3.
My function is taking input parameter v1,v2,v3 all of varchar2 type.Inside the function body,i am using these (v1,v2,v3) to filter data from an sql query and i am also
using pivot function in this sql query.
At the end my function is returning the object as defined in the starting .
When i am excuting this function,thru select statement :
select * from table(f1_test('A','B','C'));
i am geting p1,p2,p3 as column name ,which are names used when i had defined object type.Instead i want column name to be dynamic (wotever i am passing in function as
parameter while executing the function ,here A,B,C)
Please help me in geting column names dynamic as passed in input parameter (i.e A,B,C for this case )
Sample code for the problem:
create or replace TYPE obj1 AS OBJECT
( id number(5,0)
,p1 varchar2(10),
,p2 varchar2(10)
,p3 varchar2(10)
create or replace TYPE tt1 AS TABLE OF OBJ1;
create or replace
function f1_test (v1 varchar2,v2 varchar2,v3 varchar2)
return tt1 as
v_return tt1 ;
v_str varchar2(30000);
begin
v_str:='
select
cast(
multiset(
select * from
select
aa.report_id
,cc.name
,e.amount
from
aa,cc,e
where
<join conditions>
and cc.name in ('''||v1||''','''||v2||''','''||v3||''')
pivot (sum (amount) for name in ('''||v1||''' as '||v1||','''||v2||''' as '||v2||','''||v3||''' as '||v3||'))
as tt1)
from
dual';
dbms_output.put_line(v_str);
execute immediate v_str
into
v_return ;
return v_return;
end;
Edited by: 845831 on 20 Mar, 2011 12:15 PM

select id,p1 A,p2 B,p3 C from table(f1_test('A','B','C'));
drop function f1_test;
drop type tt1;
drop type obj1;
create or replace TYPE obj1 AS OBJECT
( id number(5,0)
,p1 varchar2(10)
,p2 varchar2(10)
,p3 varchar2(10)
create or replace TYPE tt1 AS TABLE OF OBJ1;
CREATE OR REPLACE
FUNCTION f1_test(
      v1 VARCHAR2,
      v2 VARCHAR2,
      v3 VARCHAR2)
    RETURN tt1
AS
    v_return tt1 ;
    v_str VARCHAR2(30000);
BEGIN
    v_str:='select cast(multiset(select 1,''20'',''30'',''40'' from dual) as tt1) from dual';
    dbms_output.put_line(v_str);
    EXECUTE immediate v_str INTO v_return ;
    RETURN v_return;
END;
/

Can a function return more than one value

plz give me some example.

http://forums.oracle.com/forums/search.jspa?threadID=&q=%2Bfunction+%2Bparameters&objID=f75&dateRange=all&userID=&numResults=15&rankBy=10001
Nicolas.

Function return size(Performance)

Hi All,
Can we specify function return size. Let's say
select table_name from user_tables;
TABLE_NAME
FUNCTION_LIST
INFORMATION_DETAIL
INFORMATION_MASTER
INFORMATION_TYPE
PLAN_TABLE
BIG_TABLE_OWNERS
BIG_TABLE
IDX_STATS
EMP
DEPT
PROJECT
T
RUN_STATS
select test_mem(table_name) from user_tables;
TEST_MEM(TABLE_NAME)
FUNCTION_LIST
INFORMATION_DETAIL
INFORMATION_MASTER
INFORMATION_TYPE
PLAN_TABLE
BIG_TABLE_OWNERS
BIG_TABLE
IDX_STATS
EMP
DEPT
PROJECT
T
RUN_STATS
create or replace function test_mem(var_1 in varchar2) return varchar2 as
begin
return var_1;
end;
/So, if you can see function return by default 4000 varchar2 and this might eat memory. Is there any way we can say or limit return bytes say like varchar2(40)

Even worse if they are doing Java to SQL or .NET to SQL!And even more worse if they do it without using bind variables!
And who gets the blame, always?
The database...
[dramatic mode]
stares sadly at horizon and wonders: "Poor, poor database, thou art so incredibly smart and powerful, and yet thou art so vulnerable at the same time and therefore usually hard-parsing all the time..."
[dramatic mode]
[philosophical mode]
Thus spake the proud developer: "Yay! Hooray! The database hard-parses and therefore the database is!"
[philosophical mode]
There should be a penalty for crippling database performance by doing such things.
I wonder: Can't it be built into the compiler? Imagine Oracle refusing to compile certain code, which may be syntactically correct but contains flawed logic, out of self-protection ;)

Oracle 11g Table function returns no records on first call

Hello,
On a Oracle 11g R2 I've a table function ( PIPELINED ) returning rows selected from a table.
The first time the function is selected, in a session ( I've tried to disconnect and log in again ), it returns no rows.
I've tried to log the call using DBMS_OUTPUT and from what I see the select on the table function returns no rows and no output is printed. So I presume Oracle is not calling the function.
The same function on a similar environment ( same db versions, patches and database structure ) works fine. The second environment is a production environment so it has more memory and some other settings enabled.
Does anyone know of settings that can relate to this behaviour ?
Thanks in advance for the help.
Regards,
Stefano Muret

Thank you for answering so fast.
Here's the function code:
FUNCTION template_parameters (iTemplate IN TEMPLATE_RAW_DATA.TMPL_ID%TYPE := NULL)
RETURN table_type_tmpl_parameters PIPELINED
IS
li_exception INTEGER DEFAULT -20025;
POUT_PARM TABLE_TYPE_TMPL_PARAMETERS;
lt_parms table_type_tmpl_parms_raw;
sParmCheck VARCHAR2(4000);
iOccurrence INTEGER;
BEGIN
pOut_Parm := table_type_tmpl_parameters();
pOut_Parm.EXTEND;
select
tmpl_id
*,tmpl_name*
*,replace(upper(trim(sql_out)),'[SCHEMA].')*
*,UPPER(TRIM(out_tmpl_parms))*
bulk collect into lt_parms
from ref_templates
where tmpl_id = NVL(iTemplate,tmpl_id)
order by tmpl_id;
FOR k IN 1..lt_parms.COUNT
LOOP
pOut_Parm(1).tmpl_id := lt_parms(k).tmpl_id;
pOut_Parm(1).tmpl_name := lt_parms(k).tmpl_name;
FOR i IN 1..2
LOOP
IF i = 1 THEN
sParmCheck := lt_parms(k).sql_out;
ELSE
sParmCheck := lt_parms(k).sql_parms;
END IF;
iOccurrence := 1;
*pOut_Parm(1).parameter_name := regexp_substr(sParmCheck,'\[[^\[]+\]',1,iOccurrence);*
WHILE pOut_Parm(1).parameter_name IS NOT NULL
LOOP
PIPE ROW (pOut_Parm(1));
iOccurrence := iOccurrence + 1;
*pOut_Parm(1).parameter_name := regexp_substr(sParmCheck,'\[[^\[]+\]',1,iOccurrence);*
END LOOP;
END LOOP;
END LOOP;
RETURN;
EXCEPTION
WHEN OTHERS THEN
RAISE_APPLICATION_ERROR(li_exception,SUBSTR(SQLERRM,1,1000));
RETURN;
END template_parameters;
This function is part of a package.
The data on both environments is the same.

Can a Function return a table ?

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