Random selection of materials

Hi Experts,
In a selection Screen i have material in select-options and a Parameter item count, now i have to select N materials randomly from the material range choosen in the selection screen and N is the number in the iten count field.
please tell me how to choose N numbers randomly, we can select upto n numbers from a table but how to select N random materials. the query written for N materials is
SELECT matnr lgort lvorm INTO CORRESPONDING FIELDS OF TABLE it_mard
             FROM mard UP TO p_count rows
             WHERE matnr IN p_matnr
             AND werks IN p_plant
             AND lvorm EQ ' '.
please send me if u have any sample code regarding that. or let me know what to write for random selection
Regards,
Nikhil

DO n TIMES.
CALL FUNCTION 'QF05_RANDOM_INTEGER'
(check its parameters by yourself).
READ TABLE it_tab INDEX random_number.
do_something with it.
ENDDO.

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Ware house Management - Bin selection by materials is random

Ware house u2013Random Bin selection
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Template- CCNNNCCCCC
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Storage section indicators are same for items procured in specified PO & hence no much relevence here
the storage bins have as well storage sections, the question was if all your bins have the same storage section.
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After ios 8 update has anyones ipad started randomly selecting everything? Even after ios 8.0.1 update it has still continued to do the same thing.

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I synced two of my email accounts via gmail's POP3 thing. But now my iphone's gmail inbox shows a random selection of emails (not most recent ones that are in my inbox). How can I make my iphone inbox match what I see when I log on using a PC?

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Random selection from a list

I’m setting up a multiple-choice question, and I want to re-arrange the position of the button sprites representing the correct answer and distractors.
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I don't know if this is simpler or not, but here is a method for grabbing a random item from a list:
gDistractorList = [1, 2, 4]
put gDistractorList.getAt(random(gDistractorList.count))

How to efficiently get hold of N randomly selected keys out of X?

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/Magnus
Edited by: MagnusE on Aug 7, 2009 10:21 AM

Hi Magnus,
you can go the other way round:
With key-association you can ensure that your request goes to the partition you want it to go. You just need to generate a reverse mapping array between partition ids and integer associated key values which are mapped to that partititon.
You can use this method for it:
public static int[] generateReverseAssociatedKeysForService(DistributedCacheService service) {
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     int i=1;
     while (partitionCount > 0) {
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}After this, you generate an equal amount of entries for each partitions with composite keys which implement key association in a way that it returns an integer which maps to your designated partition id to serve as your data. Alternatively you can sort an existing key-set into per-partition keysets.
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This way you get keys which are as evenly spread between partitions as your random generator generating your associated key indexes is spread.
Best regards,
Robert
Edited by: robvarga on Aug 7, 2009 11:55 AM
Added some more ideas and method implementation.

Oracle 11g:Query to return only 1 to 1 relationship & random selection

Hi
I have a complex query to modify but I have below the sample tables and data with only very few fields(only affected fields).
Query based on 2 tables b_test and s_test.
Pls see below.
create table b_test(building_id number not null,invalid varchar2(1));
create table s_test(sub_building_id number not null,building_id number ,invalid varchar2(1),sequence_no number);
insert into b_test values (1000,'N');
insert into b_test values(2000,'N');
insert into b_test values(3000,'N');
commit;
insert into s_test values(1,1000,'N',90);
insert into s_test values(2,1000,'N',91);
insert into s_test values(3,1000,'N',92);
insert into s_test values(4,1000,'Y',93);
insert into s_test values(5,NULL,'N',NULL);
insert into s_test values(1,2000,'N',94);
insert into s_test values(2,2000,'N',95);
insert into s_test values(3,2000,'N',96);
insert into s_test values(4,2000,'N',97);
insert into s_test values(5,2000,'N',98);
insert into s_test values(6,NULL,'N',NULL);
insert into s_test values(10,3000,'N',99);
insert into s_test values(11,3000,'N',100);
commit;The query below returns all rows required:(also see results:)
select b.building_id,b.invalid,s.sub_building_id,s.sequence_no from b_test b,
(select * from s_test where invalid='N') s
where b.building_id = s.building_id(+)
and b.invalid='N'
Results:
BUILDING_ID INVALID      SUB_BUILDING_ID     SEQUENCE_NO
1000              N     1                     90
1000             N     2                     91
1000             N     3                     92
2000             N     1                     94
2000             N     2                     95
2000             N     3                     96
2000             N     4                     97
2000             N     5                     98
3000             N     10                      99
3000             N     11                     100Now there are 2 requirements:
1)How can the above query be changed so that 1:1 relationship if sub_building_id is returned?i.e For 1 building_id, only show 1 sub_building(This could be a random selection)
(Pls help with query)
The results would be like
BUILDING_ID INVALID     SUB_BUILDING_ID     SEQUENCE_NO
1000               N     1                      90
2000               N     1                      94
3000               N     11                     1002)How can the same SEQUENCE_NO be shown for all sub_buildings for the same building? (Pls help with query)
The results will be:
BUILDING_ID INVALID     SUB_BUILDING_ID     SEQUENCE_NO
1000             N     1                       90
1000             N     2                       90
1000             N     3                       90
2000             N     1                       94
2000              N     2                       94
2000             N     3                       94
2000             N     4                       94
2000             N     5                       94
3000             N     10                       99
3000             N     11                       99Many thanks!
Edited by: Krithi on 08-Nov-2012 08:48
Edited by: Krithi on 08-Nov-2012 08:55

Krithi wrote:
Hi
I have a complex query to modify but I have below the sample tables and data with only very few fields(only affected fields).
Query based on 2 tables b_test and s_test.
Pls see below.
create table b_test(building_id number not null,invalid varchar2(1));
Thanks for posting the CREATE TABLE and INSERT statements, and your existing query; that's very helpful.
The query below returns all rows required:(also see results:)
select b.building_id,b.invalid,s.sub_building_id,s.sequence_no from b_test b,
(select * from s_test where invalid='N') s
where b.building_id = s.building_id(+)
and b.invalid='N'
Results:
BUILDING_ID INVALID      SUB_BUILDING_ID     SEQUENCE_NO
1000              N     1                     90
1000             N     2                     91
1000             N     3                     92
2000             N     1                     94
2000             N     2                     95
2000             N     3                     96
2000             N     4                     97
2000             N     5                     98
3000             N     10                      99
3000             N     11                     100
When I run your query, I get NULL for sequence_no on the last 2 rows, where building_id=3000. The numbers 99 and 100 don't seem to occur in either table. Did you post the worng sample data and/or results?
>
Now there are 2 requirements:
1)How can the above query be changed so that 1:1 relationship if sub_building_id is returned?i.e For 1 building_id, only show 1 sub_building(This could be a random selection)
(Pls help with query) Here's one way:
WITH       got_r_num AS
     SELECT sub_building_id
     ,     building_id
     ,     sequence_no
     ,     ROW_NUMBER () OVER ( PARTITION BY building_id
                               ORDER BY         sequence_no
                       )         AS r_num
     FROM    s_test
     WHERE     invalid     = 'N'
SELECT    b.building_id
,       b.invalid
,       r.sub_building_id
,       r.sequence_no
FROM             b_test     b
LEFT OUTER JOIN      got_r_num r ON r.building_id = b.building_id
WHERE     NVL ( r.r_num
           , 1
           )          = 1
ORDER BY b.building_id
;This is called a Top-N Query , because we're picking N items (N = 1 in this case) from the top of an ordered list. What makes one item the "top", and another one "lower"? That's determined by the analytic ORDER BY clause, in this case
ORDER BY      sequence_noThat means the row with the lowest sequence_no (for each building_id) will get r_num=1. If you want a random row from that building_id to be chosen as #1, then you can change the analytic ORDER BY clause to
ORDER BY      dbms_random.valueYou can ORDER BY anything you like, even a constant, but you must have an analytic ORDER BY clause. ROW_NUMBER requires an analytic ORDER BY clause.
The results would be like
BUILDING_ID INVALID     SUB_BUILDING_ID     SEQUENCE_NO
1000               N     1                      90
2000               N     1                      94
3000               N     11                     100
Again, I don't see where the 100 comes from. The results I get are:
BUILDING_ID I SUB_BUILDING_ID SEQUENCE_NO
       1000 N               1          90
       2000 N               1          94
       3000 N              11
2)How can the same SEQUENCE_NO be shown for all sub_buildings for the same building? (Pls help with query)
SELECT    b.building_id
,       b.invalid
,       s.sub_building_id
,       MIN (s.sequence_no) OVER ( PARTITION BY s.building_id)
                        AS seq_no
FROM             b_test b
LEFT OUTER JOIN      s_test s ON s.building_id = b.building_id
                            AND s.invalid      = 'N'
The results will be:
BUILDING_ID INVALID     SUB_BUILDING_ID     SEQUENCE_NO
1000             N     1                       90
1000             N     2                       90
1000             N     3                       90
2000             N     1                       94
2000              N     2                       94
2000             N     3                       94
2000             N     4                       94
2000             N     5                       94
3000             N     10                       99
3000             N     11                       99
Again, I don't see where you get sequence_no = 99. The results I get are:
BUILDING_ID I SUB_BUILDING_ID     SEQ_NO
       1000 N               1         90
       1000 N               2         90
       1000 N               3         90
       2000 N               1         94
       2000 N               2         94
       2000 N               5         94
       2000 N               3         94
       2000 N               4         94
       3000 N              10
       3000 N              11Edited by: Frank Kulash on Nov 8, 2012 12:12 PM
Added explanation and results
Edited by: Frank Kulash on Nov 8, 2012 12:28 PM
It looks like you cahnged your sample data from
insert into s_test values(10,3000,'N',NULL);
insert into s_test values(11,3000,'N',NULL);to
insert into s_test values(10,3000,'N',99);
insert into s_test values(11,3000,'N',100);The queries I posted are niow getting 99, like you requested.

Can a script randomly select an action within a specific set for use on multiple images?

Hi there.
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edited by the Jolly Green Giant (where Green stands for environmentally friendly)

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You need software for it. Do you have iPhoto installed? That is one possibility, but there are many others - you create the slideshow from your photos. Or, you can simply use Quicklook - see here:
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Random Selection in SQL query

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At most 2 records for each username, and those 2 records should be random.
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I've never delved into a Random selection method before.
Someone mentioned to me that I could use a rank() statement; but I have no clue how to use that.
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Thank you

my query just needs a slight modification:
SQL> select   deptno, ename
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import java.applet.*;
import java.util.*;
import java.text.*;
public class dclock extends Applet implements Runnable{
Thread animThread = null;
int delay = 1000;
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if(animThread == null){
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public void stop(){animThread = null;}
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try{ Thread.sleep(delay);}
catch(InterruptedException e){};
repaint();
//sec++;
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Why doesn't the clock just decide what colour it is going to be? If you need to pass the colour choices in, just let the clock accept a collection of colours in its constructor or something. I don't understand what bit of this you are having problems with as you haven't really explained. Please also use code tags.

Random select using multiple tables

Hello World!!!
I'm trying to fix a form I modified last month and it's causing me fits!
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Thanks in advance for any suggestions.
SELECT security_question, question_number
FROM (SELECT security_question, question_number
FROM agent_sec_questions
WHERE agent_id =
(SELECT agent_id
FROM agent_data
WHERE username = 'john doe')
ORDER BY DBMS_RANDOM.VALUE (1, 9))
WHERE ROWNUM = 1;

Here's the solution I came up with if interested. I got the random number first, then joined my tables. If you have a better one, please let me know...
Chow!
M
SELECT DBMS_RANDOM.VALUE(1,3) INTO Sel_Num FROM DUAL;
MESSAGE ('Sel_Num= '||Sel_Num||' ID= '||UPPER(:LOGON_BLOCK.USERID));
pause;
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               AND ROWNUM = 1;

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Thanks a lot.
Edited by: user783927 on Dec 1, 2008 5:57 AM
Edited by: user783927 on Dec 1, 2008 5:59 AM

Thanks a lot for VU#. Also i got an idea about how to randomly select a link:
Private Sub RSWVBAPage_afterPlay()
Dim objReg As New RegExp
Dim objMatchCol As MatchCollection
Dim objMatch As Match
Dim objSubMatch As SubMatches
Dim doc As String
Dim str As String
Dim rNumb As Integer
RSWApp.GetHtml doc
With objReg
.Global = True
.IgnoreCase = True
'the kind of urls have the following special pattern
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Randomize
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If objMatchCol.Count >= 1 Then
If rNumb = objMatchCol.Count Then
rNumb = objMatchCol.Count - 1
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str = objSubMatch.Item(0)
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RSWApp.WriteToLog str
Set objMatchCol = Nothing
Set objMatch = Nothing
End Sub

Random selection of materials

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