Random Record Display

Can someone tell me how to display a random record from a database? I want to use it on my site to show a "review"... am able to do it in ASP but not sure how to in JSP.
Any advice is gratefully received.
M

ok man
you can put all object that you get it form DB in not
sorted contener as HashMAP. okYeah, then to further randomize it, you can use a Random Number to lookup in that HashMap. ;) Sounds interesting.
Annie.

Similar Messages

Random Record from a Query

I have a page on my site that displays certain information in
kind of a "feature" section, where it needs to query the database
based on certain criteria and then display the data for just one of
the records. The record should be different each time the page
loads. So, if my query has 10 or 20 records, I just want to select
one of them randomly and disply its data. What would be the best
way to code such a scenario?
Many thanks.

first, a statement that contains "The record
should be different each time the page loads" and "select one
of them
randomly and display its data" is a bit of a contradiction:
you either
display a random record or you control which record to
display to make
sure each page load displays a different one.
if you just want a random record displayed (which means same
record may
be displayed on subsequent page loads) then how to do it
depends on
which database you are using, as cfSearching pointed out.
here's a great place to look to sql statements for this for
various db
systems:
http://www.petefreitag.com/item/466.cfm
if you want to display a different record each page load, you
need to
keep track which records have already been displayed
previously and
display the next one in sequence. you could do this by
storing the list
of record ids in an application-scope variable, displaying
the record
with the first id and removing that id from the list of ids.
when the
list is empty, query the db for record ids again and make a
list anew.
hth
Azadi Saryev
Sabai-dee.com
http://www.sabai-dee.com/

Display Random Record

Morning all
Just a quick one.
How do I display a random record in DW?
I have a MySQL statement which is:
SELECT * FROM
tablename ORDER BY RAND() LIMIT 0,
number of records to display
The error message I get is:
'Syntax error (missing operator) in query expression RAND()
LIMIT 0'
If I alter 'RAND()' to 'RND()', I still get the error. If I
remove the '0' I still get the error.
Any ideas how to make this work?
I'm using Access BTW.
Regards
Martin

Tell your SQL statement what to RAND - right now it doesn't
know how to
randomize it, by what field.
"Pantyboy" <[email protected]> wrote in
message
news:ef0and$r7g$[email protected]..
> Morning all
>
> Just a quick one.
>
> How do I display a random record in DW?
>
> I have a MySQL statement which is:
>
> SELECT * FROM
tablename ORDER BY RAND() LIMIT 0,
number of
> records to
> display
>
> The error message I get is:
>
> 'Syntax error (missing operator) in query expression
RAND() LIMIT 0'
>
> If I alter 'RAND()' to 'RND()', I still get the error.
If I remove the '0'
> I
> still get the error.
>
> Any ideas how to make this work?
>
> I'm using Access BTW.
>
> Regards
>
> Martin
>

Display random records

Hi guys,
Is there an easy way to display a random record from an XML
file? Current code:
HEAD
<script type="text/javascript">

</script>
BODY
<div spry:region="dsPower">{product_name}</div>
What i want to happen is when the page is loaded (and/or
reloaded) i want the {product_name} to randomly display any one of
my ten product names. I presume it requires use of {ds_RowID} and
some JavaScript, but am unsure of where to begin.
Thanks in advance for any help.

nevermind people, i figured it out already. please close this topic.

How can I select the random records in u201Cstep loopu201D.

Hi, Experts,
I am using step loop to display the data on screen now I want to select the random records from this step loop display. Like 1st 3rd or 5th record, is there any way to select the records,
like I did in Table control there was a filed in internal table named marked char length 1, I gave this field name in u201Cw/ SelColumnu201D it fill that field with u2018Xu2019 from where I can get the info about the selected records, in this way I can easily perform the operation on that internal table with the help of that marked field.
Is there any way to select the records in step loop too ?
Kind Regards,
Faisal

thanks for replay shwetali,
but i just gave you example of random records with 1st 3rd and 5th my goal is not select only these records. i want to select the random mean any records from the step loop display.
like we can select from the table control. and when select any record it place 'X' in the given internal table field.
Thanks and kind Regards,
Faisal

Dynamic Table with Random Records

What I am trying to do is select random records from a table
and display them in a dynamic table with max columns set to 3 and
the 4th record to be on a new row. Below is what I have right now
and it works to randomly pick records but has no function to set
columns in a table. If there is an easier way feel free to let me
know. I have tried various ways to do this but none seem to work.
<CFQUERY NAME="getItems" DATASOURCE="absi">
SELECT catfit.*, modcats.*, prodmat.*, prod.* FROM catfit,
modcats,
prodmat, prod WHERE prodmat.prodid=catfit.prodid And
catfit.catid=modcats.catid
ORDER BY modl ASC </cfquery>
<cfif getItems.recordCount>
<cfset showNum = 3>
<cfif showNum gt getItems.recordCount>
<cfset showNum = getItems.recordCount>
</cfif>
<cfset itemList = "">
<cfloop from="1" to="#getItems.recordCount#"
index="i">
<cfset itemList = ListAppend(itemList, i)>
</cfloop>
<cfset randomItems = "">
<cfset itemCount = ListLen(itemList)>
<cfloop from="1" to="#itemCount#" index="i">
<cfset random = ListGetAt(itemList, RandRange(1,
itemCount))>
<cfset randomItems = ListAppend(randomItems, random)>
<cfset itemList = ListDeleteAt(itemList,
ListFind(itemList, random))>
<cfset itemCount = ListLen(itemList)>
</cfloop>
<cfloop from="1" to="#showNum#" index="i">
<cfoutput>
<table width="205" border="0" align="left"
cellpadding="0" cellspacing="0">
<tr>
<td width="235" height="116"> <div
align="center"><img
src="../Products/ProductPictures/#getitems.pic[ListGetAt(randomItems,
i)]#" width="100"></div></td>
</tr>
<tr>
<td
class="ProdTitle">#getitems.brand[ListGetAt(randomItems,
i)]# #getitems.modl[ListGetAt(randomItems, i)]#</td>
</tr>
<tr>
<td
class="paragraph">$#getitems.prc[ListGetAt(randomItems,
i)]#</td>
</tr>
<tr>
<td><A
href="../Products/details.cfm?prodid=#getItems.prodid[ListGetAt(randomItems,
i)]#" class="linkcontact">more
info</a></td>
</tr>
<tr>
<td> </td>
</tr>
</table>
</cfoutput>
</cfloop>
</cfif>

To start a new row after 3 records, do something like this.
<table>
<tr>
<cfoutput query="something">
<td>#data#<td>
<cfif currentrow mod 3 is 0>
</tr><tr>
</cfoutput>
</tr>
</table>
You should also know that your approach is very inefficient
in that you are bringing in to cold fusion more data than you need.
First of all you are selecting every field from 3 tables when you
don't appear to be using all of them. Second, you are selecting
every record and you only want to use 3. There are better ways out
there, but they are db specific and you did not say what you are
using.

Random record return

I have a DB of sites that I need to query and pull in 5
records that are to be displayed in a random order.
I can limit the records but I'm struggling with displaying
them in a random order.
Any ideas?

We're using MySQL as the DB and to clarify I need to pull in
5 random records in a random order.
I've just been emailed the answer by a friend so I'llpost it
up here.
"SELECT *
FROM tablename
WHERE somefield='something'
ORDER BY RAND() LIMIT 5"
Seems to work fine to me.

Random record for ASP

I would like to have a section on my ASP page to generate a
random record that pulls from my database. So that each time the
page is opened/refreshed, a different record is displayed.
Any ideas?

"Biggest Dave" <[email protected]> wrote in
message
news:e2nn6n$83e$[email protected]..
>I would like to have a section on my ASP page to generate
a random record
>that pulls from my database. So that each time the page
is
>opened/refreshed, a different record is displayed.
>
> Any ideas?
Yes.
Of course, since I don't know what database you're using, any
or all of
those ideas could be useless.

Random Record + Update

Looking to create a random record repeat region where the
random records being pulled updates a hit count. i.e. a simple
banner rotator that counts how many times it's displayed. not all
banners being rotated are in one folder... they are simply accounts
designated as being featured. I tried the order by rand() limit
5... error. changed to just rand() and that worked... but how do I
update a file based on that?

darrel wrote:
>> i tried the code you provided, the 2 question
marks... but that didn't seem
>> to do it either. anyone else have any ideas on how
to update a hit counter
>> based on the random record recordset?
>
> Instead of being a smart-***, how about actually either
a) quoting the
> original question or b) repeating the question.
>
> Anyone that's going to be of any help to you uses the
newsgroup interface,
> not the crappy web forum, so when you reply to a
question that's several
> weeks/months old, we don't see the original post.
>
> So, as such, all we saw was your silly question mark.
I use a newsreader and saw the entire thread as if it was a
new one.
There was 3 days between the original posts and his question
mark. Maybe
a question mark wasn't the right way to get more attention to
the post...
Steve

Change number of record displayed for a single item alone

Hi,
I have a single data block with few items. Is it possible to make one item in the block as non-database item and make the display of record in the item alone to show multiple lines.
i.e. All other items in the Data block shows single record, whereas this particular item should shows 10 records.
Is this achievable?
Or should i have to put that item in a separate data block and choose the data block property to "Number of records displayed" as 10?
Thanks,
Yuvaraaj.

983448 wrote:
Hi,
I have a single data block with few items. Is it possible to make one item in the block as non-database item and make the display of record in the item alone to show multiple lines.
i.e. All other items in the Data block shows single record, whereas this particular item should shows 10 records.Yes you can. But i will say re-check your design.
Hamid
Mark correct/helpful to help others to get right answer(s).*

How to set the number of records displayed at run time

Is it possible to set the number of records displayed block property at run time? The built-in 'GET_BLOCK_PROPERTY' can retrieve the number of RECORDS_DISPLAYED. But I can't find SET_BLOCK_PROPERTY to set this property. Is there anyway I can set this property programmatically? Thanks for any suggestions!

Bookmark Go to End
goal: How to vary the number of records displayed in a block
programmatically
fact: Oracle Forms Developer
fix:
Block property 'Number of Records Displayed' can not be changed during runtime
using SET_BLOCK_PROPERTY. However, it is still possible programmatically change
the visual appearance of the form so that it creates effect of changing this
property. To achieve such an effect follow these steps:
1. in Forms Builder, in the multirecord block define the new set of items.
The simplest way is to copy/paste the original item and rename created item.
2. set properties of these new items so that they are the same as the properties
of the original items. If these new items were copied from original items
then properties are already the same. Modify following properties
'Database item' on new items to value 'No'
'Synchronize with item' to the value of the original item
'Number of Items Displayed' to desired value.
'Visible' to 'No'
In other words, these new items are mirrors of original items.
3. code event, which is meant to trigger the change in block appearance.
This code should use SET_ITEM_PROPERTY built-in to set properties
like 'VISIBLE', 'ENABLED', 'NAVIGABLE', 'UPDATE_ALLOWED' and others
to desired value for items which are about to be displayed, then
move cursor to one of these just displayed items with GO_ITEM built-in
and then hide the previously displayed items.
Example:
Assume that the block is built on SCOTT.DEPT schema. Following will
change the set of displayed items
set_item_property('dept.mdeptno',visible,property_true);
set_item_property('dept.mdname',visible,property_true);
set_item_property('dept.mloc',visible,property_true);
set_item_property('dept.mdeptno',enabled,property_true);
set_item_property('dept.mdname',enabled,property_true);
set_item_property('dept.mloc',enabled,property_true);
set_item_property('dept.mdeptno',update_allowed,property_true);
set_item_property('dept.mdname',update_allowed,property_true);
set_item_property('dept.mloc',update_allowed,property_true);
set_item_property('dept.mdeptno',navigable,property_true);
set_item_property('dept.mdname',navigable,property_true);
set_item_property('dept.mloc',navigable,property_true);
go_item('dept.mdeptno');
set_item_property('dept.deptno',visible,property_false);
set_item_property('dept.dname',visible,property_false);
set_item_property('dept.loc',visible,property_false);
Regards,
Monica

Rows Per Page doesn't affect the number of records displayed

I just updated from 3.2 to 4.0 this morning. When I change the Rows Per Page value in the action menu the report doesn't change and the number of records displayed stays at 10. The report has ~6000 records. I edited the report attributes and add the rows selector to the IR search bar. This doesn't change the behavior either. I noticed that if I change the rows per page in the action menu then the drop down select list is updated, but the report still doesn't change from 10. I tried paging to the next set of results and it still remains at 10.
Has anyone else experienced this problem?
Tony

Yes, Tony, I've seen this in several versions of APEX. In most cases, simply starting a new session was enough to force APEX to refresh the page and grab the new set of pagination directives. If that doesn't work, please give more info like: what type of report you are doing and what the Pagination values are. Please note the following:
Report Template
Pagination Scheme
Enable Partial Page Refresh
Display Position
Number of Rows/Number of Rows Item
Maximum Row Count

Populate multi record display item

Hellou gurus!
I have forms 10g and i need to populate display item in enter query mode. My problem is that I have table T1 with some static values. Table T2 is through ID connected (reference) to table T1 1:1 cardinality and T2 table also have reference to T3 table.
I have block B2 based on table T2 and in this block I have multirecord item for inserting and updating new values for T2, but in this block ii also have no DB, multi record display item (because i don't want to allow editting in T1 table records) for diplaying static values for table T1. I want to display all static values from T1 next to the editable values in T2 (T2 multi record field is not insert yet). I tried for loop, select into but it not work. T1 values need to be selected before I started to inserting values into T2 items, but off course they need to be referenced It is hard to explain but i belive you understand.
Can you help me how I can populate multi record item??

You have to write the code again for your second list item....
group_id RecordGroup;
list_id Item := Find_Item('button.tyear');
list_id1 Item := Find_Item('button.tperiod');
status NUMBER;
rg_name varchar2(40) := 'recgroup';
BEGIN
----------------------------- LIST
clear_list(list_id);
group_id := Find_Group(rg_name);
IF NOT id_null(group_id) then
Delete_Group(group_id);
End if;
group_id := Create_Group_From_Query(rg_name,
'select vm_year, vm_year from fwqgl.vouchermaster
group by vm_year');
status := Populate_Group(rg_name);
Populate_List(list_id, group_id);
/* --------------------SECOND LIST ITEM...BUT REC. GRP NAME CAN BE SAME,better to use another name if you need to retrieve list and store qry..other wise the fol. code is enuf-----------------------*/
clear_list(list_id1);
group_id := Find_Group(rg_name);
IF NOT id_null(group_id) then
Delete_Group(group_id);
End if;
group_id := Create_Group_From_Query(rg_name,
'select vm_period, vm_period from fwqgl.vouchermaster
group by vm_period');
status := Populate_Group(rg_name);
Populate_List(list_id1, group_id);
END;Edited by: Dora on Dec 5, 2009 10:41 AM

Select Random Records with Group By?

Hi,
I currently select random records by using this type of SQL:
(SELECT *
FROM ( SELECT *
FROM ( SELECT *
FROM TABLEA
ORDER BY dbms_random.value
WHERE ROWNUM <= 100
Based on the following data, I now want to still pick out random records but I only want 1 record from the same ID and START_DATE but where the FLAG could be Y or N.
So with grouping by ID and START_DATE, I need to still be able to choose the record if it has anything from 1 entry or 10 entries per ID and START_DATE.
Could this be performed with a GROUP BY?
ID START_DATE FLAG
1 12/12/2005 Y
1 12/12/2005 N
1 12/12/2005 N
1 30/12/2005 Y
1 30/12/2005 N
1 30/12/2005 N
2 10/10/2005 Y
2 07/07/2005 Y
Thanks for any help.
Daniel

Try this [not tested]:
SELECT *
     FROM
          (SELECT *
               FROM
               ( SELECT
                          ID
                         ,START_DATE
                         ,FLAG
                         ,ROW_NUMBER() OVER
                              (PARTITION BY ID,START_DATE ORDER BY dbms_random.value) RN
                    FROM TABLEA
               ORDER BY dbms_random.value
     WHERE RN = 1
          AND ROWNUM <= 100
     ;

Number of items/records display

I want to set the number of items/records display base on query. I tried Set_Block_Property and Set_Item_Property, they don't have any option for me to set it dynamically. Any ideas?
Thanks

A couple:
a) Set QUERY ALL RECORDS to YES, and programmaticaly set MAXIMUM RECORDS FETCHED.
b) in a POST-QUERY block-level trigger, check the :system.trigger_record. When it reaches the number you want, issue an ABORT_QUERY built-in.
Hope this helps,
Pedro

Random Record Display

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