Returning multiple values with SELECT FOR LOOP

Oracle EE 11gR1
PL/SQL
OEL 5.8
===========
Would like to know how to do the following?
for x, y in (select name, street
from employees
where hire_date < sysdate - 100)
loop
In other words, is there a way to handle 2 (or more) values in a SELECT FOR LOOP structure? If not, then how to accomplish the same task.
The above does not work of course. :-)
Appreciate any and all advice.

Yes, just have one name in your for loop and that becomes the equivalent of a table name and reference the columns as that name.column name
for t in (select name, street
from employees
where hire_date < sysdate - 100)
loop
dbms_output.put_line('name = '||t.name);
dbms_output.put_line('street = '||t.street);
end loop;

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How can I return multiple values with PL/SQL Web Services

Hi,
I'm new to developping Web Services. I'm doing some tests with JDeveloper and OC4J on my local machine with a Web Services based on a PL/SQL function within a package. Right now that function only returns one value. So the xml response only has one output.
I'd like to know how can I return multiple values with my PL/SQL Web Service. For example, if I want to return an employee's name and id? And that the xml contains two output : <employee>, <empid>?
Reginald
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Alright, I actually found my answer. Since this was asked I think as a followup somewhere else I'll give my answer.
It is very simple, all you have to do is create an Object Type and then Return that object type. After that, JDeveloper will take care of everything and you will have an xml response with multiple values. Here
{color:#ff0000}
create or replace TYPE person AS OBJECT
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last_name VARCHAR2(50),
date_birth date
);{color}
Then your function used in your Web Service should look something like this :
{color:#ff0000}
function info_emp (p_empno IN VARCHAR2) RETURN person AS
l_emp person := person(-1,'','','');
BEGIN
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,last_name
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import java.awt.*;
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DECLARE
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SUB wwv_flow_global.vc_arr2;
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Edited by: Manoj Kaushik on Nov 20, 2009 10:10 PM

DECLARE
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    SUB wwv_flow_global.vc_arr2;
BEGIN
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END;This doesn't look right to me:
1. You have 2 loops, and they are both using the variable i as a counter.
2. Your insert needs to be in the form: insert into table (column names) values (values to insert)
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Returning multiple values from a table

Hi there i am working on a bit of sql which will return values when they exist in a table.
The code I have returns the correct value when there is only one entry in the tbl_studentmodules table, as soon as there is more than one entry in this table it displays no rows at all :(.
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I hope I've provided enough information here. If not, just let me know what I'm missing.
I am creating a view that will combine information from a few tables. Most of it is fairly straightforward, but there are a couple of columns in the view that I need to get by running a function within a package. Even this is fairly straightforward (I have a function named action_date in a package called rp, for instance, which I can use to return the date I need via SELECT rp.action_date(sequence_number).
Here's the issue: I actually need to return several bits of information from the same record (not just action_date, but also action_office, action_value, etc.) - a join of the tables won't work here as I'll explain below. I can, of course, run a separate function for each statement but that is obviously inefficient. Within the confines of the view select statement however, I'm not sure how to return each of the values I need.
For instance, right now, I have:
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sequence_number NUMBER(10),
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Table1_seq NUMBER(10),
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CREATE VIEW all_this_stuff AS
SELECT sequence_number, name,
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rp.action_office(sequence_number) action_office,
rp.action_value(sequence_number) action_value
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Thanks so much!

Hi,
What you want is a Top-N Query , which you can do using the analytic ROW_NUMBER function in a sub-query, like this:
WITH     got_rnum     AS
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I suspect you'll really want to get one row for each group , where a group is defined by some value in a table to which you're joining.
In that case, add a PARTITION BY clause to the ROW_NUMBER function.
If you'd post a little sample data (CREATE TABLE and INSERT statements), I could show you exactly how.
Since I don't have your tables, I'll show you using tables in the scott schema.
Here's a view that has data from the scott.dept table and also from scott.emp, but only for the most senior employee in each department (that is, the employee with the earliest hiredate). If there happens to be a tie for the earliest hiredate, then the contender with the lowest empno is chosen.
CREATE OR REPLACE VIEW     senior_emp
AS
WITH     got_rnum     AS
     SELECT     d.deptno
     ,     d.dname
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SELECT     deptno
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,     ename
,     hiredate
FROM     got_rnum
WHERE     rnum     = 1
SELECT     *
FROM     senior_emp
;Output:
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        10 ACCOUNTING           7782 CLARK      09-JUN-81
        20 RESEARCH             7369 SMITH      17-DEC-80
        30 SALES                7499 ALLEN      20-FEB-81
By the way, one of the conditions in the query you posted was
action_office     LIKE 'E'which is equivalent to
action_office     = 'E'(LIKE is always equivalent to = if the string after LIKE doesn't contain any wildcards.)
Did you mean to say that, or did you mean something like this:
action_office     LIKE 'E%'instead?

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Hi,
I'm trying to update a table which contain these fields : ItemID, InventoryID, total amounts
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UPDATE [bmssa].[etshortagetemp]
SET JournalAmounts = (SELECT sum(b.BomQty) FROM [bmssa].[Bom] b
JOIN [bmssa].[SalesLine] sl ON sl.ItemBomId = b.BomId
JOIN [bmssa].[SalesTable] st ON st.SalesId = sl.SalesId
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Remember that link to the documentation posted above that explains exactly how to do this. When you read it which part exactly were you having trouble with?

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Hi
i am trying to write a function to return "multiple" values
however, it returned the following error during compilation
Compilation errors for FUNCTION sch1.myfn
Error: PLS-00382: expression is of wrong type
Line: 19
Text: RETURN V_res;
Error: PL/SQL: Statement ignored
Line: 19
Text: RETURN V_res;
ques :
1 - is there a need to always declare a table ? as it'll only return a single record with multiple columns
CREATE OR REPLACE TYPE result as table of result_t;
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CREATE OR REPLACE FUNCTION myfn (IN_ID IN VARCHAR2, IN_BEGIN IN DATE) RETURN result IS
type V_res_t is RECORD (user varchar2(100), comments varchar2(4000));
V_res V_res_t;
BEGIN
select a.user, a.comment
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(select distinct id,
begin_time,
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where id = IN_LOTID
and begin_time = IN_BEGIN) b
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and a.begin_time = b.begin_time
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and a.id = IN_ID
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END;
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tks & rgds

And if you really want to return a type as a table of, work with PIPELINED function :
SQL> CREATE OR REPLACE TYPE result_t as object
2 (user# varchar2(100), comments varchar2(4000));
3 /
Type created.
SQL> CREATE OR REPLACE TYPE result as table of result_t;
2 /
Type created.
SQL>
SQL> CREATE OR REPLACE FUNCTION myfn (IN_ID IN VARCHAR2, IN_BEGIN IN DATE) RETURN result
2 pipelined is
3 user# varchar2(100);
4 comments varchar2(4000);
5 BEGIN
6 pipe row (result_t(user#,comments));
7 return;
8 END;
9 /
Function created.
SQL>PS: there is non sense to use pipelined function in my example, it is just an example to return a type as table.
Nicolas.

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I have created a Multiple Select List, and the manual says that when multiple values are selected and the page is submmitted (I'm using a GO button), the multiple values are put into the ITEM field, separated with a colon . However, whenever I select multiple entries in my list, it only ever returns a value for the first item (like a single select list).
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thanks.
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Andy / Scott,
Sorry, please bear with me ... still new to this.
I have a multi select list item in page 2, called P2_MULTI_LIST. When the page is submitted, I no longer physically pass it to page 3, but how would page 3 pick up the value ? Do I need to set up a P3_MULTI_LIST item in page3 and set that item to the P2_MULTI_LIST value, or do I reference P2_MULTI_LIST directly in my Page3 SQL query ?
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thanks
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[svn] 889: Add test case for BLZ-82 where HttpService should return multiple headers with the same name .

Revision: 889
Author: [email protected]
Date: 2008-03-21 13:08:05 -0700 (Fri, 21 Mar 2008)
Log Message:
Add test case for BLZ-82 where HttpService should return multiple headers with the same name.
Ticket Links:
http://bugs.adobe.com/jira/browse/BLZ-82
Added Paths:
blazeds/trunk/qa/apps/qa-regress/remote/MultipleHeadersTest.jsp
blazeds/trunk/qa/apps/qa-regress/testsuites/mxunit/tests/proxyService/httpservice/MultiHe aderTest.mxml

Hi again,
this may be old news to some people, but I just realized we can have the desired benefits I originally listed (encapsulation, reuse, maintainability, security) TODAY by using pipelined functions and using the table() function in Apex report region queries.
So the report query basically becomes, for example (if get_employees is a pipelined function)
select * from table(my_package.get_employees(:p1_deptno))
The only downside compared to a (weakly typed) sys_refcursor is that you have to define the type you are returning in your package spec (or as an SQL type). So it's a bit more coding, but it's still worth it for the other benefits it provides.
I like Apex even better now! :-)
- Morten

Hi how will get subquery returns multiple values for main query

Hi all ;
here i given one sql query
1)select decode(a.FLG,'Y','yes','N','no','null')||'] '||a.p_type||' : '|| initcap(replace(substr(b.mgr,0,instr(b.mgr,'@')-1),'.',' '))||' - '||
b.name||' ('|| substr(a.name,0,instr(a.name,'-')-1)||')'
from table1 a
join table3 c on c.emptype = a.emptype
left outer join table2 b on a.name = b.name
where a.mgrid = 100;
if i run this above query returning multiple values depend on sa.mgr values.
like output coming like this
yes:2000-anbarasan
yes:2700-anb
yes:2000-rasan
yes:2807-anbarasan
yes:2700-anbanu
yes:2000-null
2) this sub query i am passing with main query
select sa.mgrid,sa.sal,(select decode(a.FLG,'Y','yes','N','no','null')||'] '||a.p_type||' : '||
initcap(replace(substr(b.mgr,0,instr(b.mgr,'@')-1),'.',' '))||' - '||
b .name||' ('|| substr(a.name,0,instr(a.name,'-')-1)||')'
from table1 a
join table3 c on c.emptype = a.emptype
left outer join table2 b on a.name = b.name
where a.mgrid = 100)" test " from table4 sa,table5 te ,table6 ft where sa.id(+)=te.id and sa.mgr=ft.mgr;
my final out put required like this:
mgrid sal test
100 20000 yes:2000-anbarasan
yes:2700-anb
yes:2000-rasan
yes:2807-anbarasan
yes:2700-anbanu
yes:2000-null
but i am getting erro:
1)missing paranths
2)single row subquery return more then one row.
hi kindly give me answer to me as soon as possible
Edited by: anbarasan on Sep 29, 2008 9:48 PM

I refuse to read all of that code and guess what error message you are getting. Apparently others feel the same way.
Run the final SQL statement and then cut and paste the code and full error statement into a post.
Also include your full version number to three decimal places.
My refusal is not an unwillingness to help you but rather an unwillingness to spend 10 minutes reconstructing what you could have pasted in in a fraction of a second. We are all volunteers here and there are many people that need help. I hope you understand.

[UIX] How To: Return multiple values from a LOV

Hi gang
I've been receiving a number of queries via email on how to return multiple items from a LOV using UIX thanks to earlier posts of mine on OTN. I'm unfortunately aware my previous posts on this are not that clear thanks to the nature of the forums Q&A type approach. So I thought I'd write one clear post, and then direct any queries to it from now on to save me time.
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I'll base my example on the hr schema supplied with the standard RDBMS install.
Say we have an UIX input-form screen to modify an employees record. The employees record has a department_id field and a fk to the departments table. Our requirement is to build a LOV for the department_id field such that we can link the employees record to any department_id in the database. In turn we want the department_name shown on the employees input form, so this must be returned via the LOV too.
To meet this requirement follow these steps:
1) In your ADF BC model project, create 2 EOs for employees and departments.
2) Also in your model, create 2 VOs for the same EOs.
3) Open your employees VO and create a new attribute DepartmentName. Check selected in query. In expressions type (SELECT dept.department_name FROM departments dept WHERE dept.department_id = employees.department_id). Check Updateable always.
4) Create a new empty UIX page in your ViewController project called editEmployees.uix.
5) From the data control palette, drag and drop EmployeesView1 as an input-form. Notice that the new field DepartmentName is also included in the input-form.
6) As the DepartmentName will be populated either from querying existing employees records, or via the LOV, disable the field as the user should not have the ability to edit it.
7) Select the DepartmentId field and delete it. In the UI Model window delete the DepartmentId binding.
8) From the data controls palette, drag and drop the DepartmentId field as a messageLovInput onto your page. Note in your application navigator a new UIX page lovWindow0.uix (or similar) has been created for you.
9) While the lovWindow0.uix is still in italics (before you save it), rename the file to departmentsLov.uix.
10) Back in your editEmployees.uix page, your messageLovInput source will look like the following:
<messageLovInput
    model="${bindings.DepartmentId}"
    id="${bindings.DepartmentId.path}"
    destination="lovWindow0.uix"/>Change it to be:
<messageLovInput
    model="${bindings.DepartmentId}"
    id="DepartmentId"
    destination="departmentsLov.uix"
    partialRenderMode="multiple"
    partialTargets="_uixState DepartmentName"/>11) Also change your DepartmentName source to look like the following:
<messageTextInput
    id=DepartmentName
    model="${bindings.DepartmentName}"
    columns="10"
    disabled="true"/>12) Open your departmentsLov.uix page.
13) In the data control palette, drag and drop the DepartmentId field of the DepartmentView1 as a LovTable into the Results area on your page.
14) Notice in the UI Model window that the 3 binding controls have been created for you, an iterator, a range and a binding for DepartmentId.
15) Right click on the DepartmentsLovUIModel node in the UI Model window, then create binding, display, and finally attribute. The attribute binding editor will pop up. In the select-an-iterator drop down select the DepartmentsView1Iterator. Now select DepartmentName in the attribute list and then the ok button.
16) Note in the UI Model you now have a new binding called DCDefaultControl. Select this, and in the property palette change the Id to DepartmentName.
17) View the LOV pages source, and change the lovUpdate event as follows:
<event name="lovSelect">
    <compound>
        <set value="${bindings.DepartmentId.inputValue}" target="${sessionScope}" property="MyAppDepartmentId" />
        <set value="${bindings.DepartmentName.inputValue}" target="${sessionScope}" property="MyAppDepartmentName" />
    </compound>
</event>18) Return to editEmployees.uix source, and modify the lovUpdate event to look as follows:
<event name="lovUpdate">
    <compound>
        <set value="${sessionScope.MyAppDepartmentId}" target="${bindings.DepartmentId}" property="inputValue"/>
        <set value="${sessionScope.MyAppDepartmentName}" target="${bindings.DepartmentName}" property="inputValue"/>
    </compound>
</event>Thats it. Now when you select a value in your LOV, it will return 2 (multiple!) values.
A couple things to note:
1) In the messageLovInput id field we dont use the .path notation. This is mechanism for returning 1 value from the LOV and is useless for us.
2) Again in the messageLovInput we supply _uixState as an entry in the partialTargets.
3) We are relying on partial-page-refresh functionality to update multiple items on the screen.
Im not going to take the time out to explain these 3 points, but its worthwhile you learning more about them, especially the last 2, as a separate exercise.
One other useful thing to do is, in your messageLovInput, include as a last entry in the partialTargets list MessageBox. In turn locate the messageBox control on your page (if any), and supply an id=MessageBox. This will allow the LOV to place any errors raised in the MessageBox and show them to the user.
I hope this works for you :)
Cheers,
CM.

Thanks Chris,
It took me some time to find the information I needed, how to use return multiple values from a LOV popup window, then I found your post and all problems were solved. Its working perfectly, well, almost perfectly.
Im always fighting with ADF-UIX, it never does the thing that I expect it to do, I guess its because I have a hard time letting go of the total control you have as a developer and let the framework take care of a few things.
Anyway, I'm using your example to fill 5 fields at once, one of the fields being a messageChoice (a list with countries) with a LOV to a lookup table (id , country).
I return the countryId from the popup LOV window, that works great, but it doesn't set the correct value in my messageChoice . I think its because its using the CountryId for the listbox index.
So how can I select the correct value inside my messageChoice? Come to think of it, I dont realy think its LOV related...
Can someone help me out out here?
Kind regards
Ido

Function which returns multiple values that can then be used in an SQL Sele

I'd like to create a function which returns multiple values that can then be used in an SQL Select statement's IN( ) clause
Currently, the select statement is like (well, this is a very simplified version):
select application, clientid
from tbl_apps, tbl_status
where tbl_apps.statusid = tbl_status.statusid
and tbl_status.approved > 0;
I'd like to pull the checking of the tbl_status into a PL/SQL function so my select would look something like :
select application, clientid
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... but I haven't been able to figure out how to return the results so they can be used in SQL.
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Trisha Gorr

Perhaps take a look at pipelined functions:
Single column example:
SQL> CREATE OR REPLACE TYPE split_tbl IS TABLE OF VARCHAR2(32767);
2 /
Type created.
SQL> CREATE OR REPLACE FUNCTION split (p_list VARCHAR2, p_delim VARCHAR2:=' ') RETURN SPLIT_TBL PIPELINED IS
2      l_idx    PLS_INTEGER;
3      l_list   VARCHAR2(32767) := p_list;
4      l_value VARCHAR2(32767);
5    BEGIN
6      LOOP
7        l_idx := INSTR(l_list, p_delim);
8        IF l_idx > 0 THEN
9          PIPE ROW(SUBSTR(l_list, 1, l_idx-1));
10          l_list := SUBSTR(l_list, l_idx+LENGTH(p_delim));
11        ELSE
12          PIPE ROW(l_list);
13          EXIT;
14        END IF;
15      END LOOP;
16      RETURN;
17    END SPLIT;
18 /
Function created.
SQL> SELECT column_value
2 FROM TABLE(split('FRED,JIM,BOB,TED,MARK',','));
COLUMN_VALUE
FRED
JIM
BOB
TED
MARK
SQL> create table mytable (val VARCHAR2(20));
Table created.
SQL> insert into mytable
2 select column_value
3 from TABLE(split('FRED,JIM,BOB,TED,MARK',','));
5 rows created.
SQL> select * from mytable;
VAL
FRED
JIM
BOB
TED
MARK
SQL>Multiple column example:
SQL> CREATE OR REPLACE TYPE myrec AS OBJECT
2 ( col1   VARCHAR2(10),
3    col2   VARCHAR2(10)
4 )
5 /
Type created.
SQL>
SQL> CREATE OR REPLACE TYPE myrectable AS TABLE OF myrec
2 /
Type created.
SQL>
SQL> CREATE OR REPLACE FUNCTION pipedata(p_str IN VARCHAR2) RETURN myrectable PIPELINED IS
2    v_str VARCHAR2(4000) := REPLACE(REPLACE(p_str, '('),')');
3    v_obj myrec := myrec(NULL,NULL);
4 BEGIN
5    LOOP
6      EXIT WHEN v_str IS NULL;
7      v_obj.col1 := SUBSTR(v_str,1,INSTR(v_str,',')-1);
8      v_str := SUBSTR(v_str,INSTR(v_str,',')+1);
9      IF INSTR(v_str,',')>0 THEN
10        v_obj.col2 := SUBSTR(v_str,1,INSTR(v_str,',')-1);
11        v_str := SUBSTR(v_str,INSTR(v_str,',')+1);
12      ELSE
13        v_obj.col2 := v_str;
14        v_str := NULL;
15      END IF;
16      PIPE ROW (v_obj);
17    END LOOP;
18    RETURN;
19 END;
20 /
Function created.
SQL>
SQL> create table mytab (col1 varchar2(10), col2 varchar2(10));
Table created.
SQL>
SQL> insert into mytab (col1, col2) select col1, col2 from table(pipedata('(1,2),(2,3),(4,5)'));
3 rows created.
SQL>
SQL> select * from mytab;
COL1       COL2
1          2
2          3
4          5

How will get subquery return multiple values and passing to the main query

Hi all ;
here i given one sql query
1)select decode(a.FLG,'Y','yes','N','no','null')||'] '||a.p_type||' : '|| initcap(replace(substr(b.mgr,0,instr(b.mgr,'@')-1),'.',' '))||' - '||
b.name||' ('|| substr(a.name,0,instr(a.name,'-')-1)||')'
from table1 a
join table3 c on c.emptype = a.emptype
left outer join table2 b on a.name = b.name
where a.mgrid = 100;
if i run this above query returning multiple values depend on sa.mgr values.
like output coming like this
[yes]:2000-anbarasan
[yes]:2700-anb
[yes]:2000-rasan
[yes]:2807-anbarasan
[yes]:2700-anbanu
[yes]:2000-null
2) this sub query i am passing with main query
select sa.mgrid,sa.sal,(select decode(a.FLG,'Y','yes','N','no','null')||'] '||a.p_type||' : '||
initcap(replace(substr(b.mgr,0,instr(b.mgr,'@')-1),'.',' '))||' - '||
b .name||' ('|| substr(a.name,0,instr(a.name,'-')-1)||')'
from table1 a
join table3 c on c.emptype = a.emptype
left outer join table2 b on a.name = b.name
where a.mgrid = 100)" test " from table4 sa,table5 te ,table6 ft where sa.id(+)=te.id and sa.mgr=ft.mgr;
my final out put required like this:
mgrid sal test
100 20000 [yes]:2000-anbarasan
[yes]:2700-anb
[yes]:2000-rasan
[yes]:2807-anbarasan
[yes]:2700-anbanu
[yes]:2000-null
but i am getting erro:
1)missing paranths-it solved
2)single row subquery return more then one row.
give me the correct solution.how will solve this problem
Edited by: anbarasan on Sep 29, 2008 6:49 AM
Edited by: anbarasan on Sep 29, 2008 6:51 AM
Edited by: anbarasan on Sep 29, 2008 6:53 AM
Edited by: anbarasan on Sep 29, 2008 6:56 AM
Edited by: anbarasan on Sep 29, 2008 6:58 AM

Hi,
It doesn't look like you posted either the complete query or the complete error message (including line number). Try again.
"single row subquery return more then one row" usually means you are using a sub-query in a place where a single expression is expected, for example the column called avg_sal in this query:
SELECT ename
,       sal
,       (SELECT AVG (sal) FROM scott.dept WHERE deptno = e.deptno) AS avg_sal -- Scalar-sub-query
FROM    scott.emp e; The error occurs when the sub-query returns more than one row
If the sub-querry really is supoosed to be returning only one row, the solution is to fix the sub-query, usually be adding something to the WHERE clause.
If the sub-query is supposed to return more than one row, then the main query has to be re-written, perhaps as a join.
Post a little sample data and the results you want from that data if you need help.

I need to return multiple values in function

create or replace function f (p in varchar2) return varchar2
is
a number(10);
begin
for loop 1 in 1..10
select instr('yyyyyyyyynnnnnyynny','y',1,i) into a from dual;
end loop;
return a;
end;
my function return a value but i need to return multiple values
thanks in advance

Dipali Vithalani wrote:
I understand that OUt parameter should not be used in funtions... Then I am eager to know, why oracle has provided the opton of OUT Parameter in funtion creation ? Hope you can explain that..This is an option is many languages.
And there is valid use for it. PL/SQL however does not implement the full solution. An OUT parameter is essentially passing parameters by reference and not passing it by value.
Passing by reference means passing a pointer to the function/procedure to the variable in the caller. This allows the function/procedure to directly reference the value in the caller.
Passing by value means that the value from the variable in the caller is copied to the stack space of the function/procedure being called. The function/procedure thus has its own local copy of that value.
That could be a performance and resource problem when the caller has a large data structure and the entire structure needs to be copied from the caller to the called procedure/function. In such a case it is a lot faster (and less memory needed) to simply pass a pointer to that structure to the function/procedure being called.
And this is basically what an OUT parameter does - it allows PL/SQL code direct access to write into the variable of the calling code.
In some cases you may have a large data structure, want to pass it by reference, but do not want the function/procedure being called to change it. You do not want to allow it modify your large data structure. You simply want to pass a pointer and allow read access to the function/procedure.
In other languages, such a parameter is defined as a constant - as constants cannot be changed. So the parameter signature will look something like the following:
create or replace function FooFunc( largeStruct CONSTANT IN OUT NOCOPY SomeDataType ) return SomeOtherDataType is ..And this is the only time that you should use an OUT parameter (passing by reference) in a function - when the function parameter is a large data structure. At the same time, the function is disallowed from changing that OUT parameter. It is passed as an OUT parameter simply to increase call performance and reduce memory requirements.
PL/SQL unfortunately does not support this - allowing a value to be passed as a constant reference.
As for why PL/SQL supports it the way it does - it does not mean that because PL/SQL supports OUT parameters for functions, it should be used. PL/SQL also supports the GoTo statement. Simply because it supports a specific feature does not mean that it is a good idea to use it.

Returning multiple values with SELECT FOR LOOP

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