I have read 10000 opinions on returning random records and I am more
confused now that before I started. I have a small access db that will
contain 20 or so rows with 3 or 4 columns. I like to return a set of 6
distinct rows and display the columns in html. I have seen response.write
and loops but can't I throw the 6 random rows in a array and pull the data
as I need it in the page? Examples?
I'm trying to have my program randomly select one of five images. I think my syntax is correct (that is it isn't giving my any error messages and the page loads with the image being replaced by a broken link 'X' box), but I don't know how to display the image to the screen.
Should the response.redirect part automatically display it to the screen or should I have it in some tag like <td><img scr ="lrandom"></td> within my table?
<% dim array(5)
randomize
array(1)="img1.gif"
array(2)="img2.gif"
array(3)="img3.gif"
array(4)="img4.gif"
array(5)="img5.gif"
upperbound=ubound(array)
lowerbound=0
lrandom = Int((upperbound - lowerbound + 1) * rnd + lowerbound)
response.redirect "images/" & (Array(lrandom))
%>
I want to take 3 records from a database. The selection must first take any record marked as priority and then random records (so there could be 3 priority records and no more or 1 priority and 2 random etc)
My theory is to build a recordset filtered by records marked priority, and if there are less than 3, build a second recordset of all the other records.
Questions
1, how can I select random records form the second recordset, without selecting the same one twice?
2, OR, could I write a sql statement which would randomly select 3 records from my table
3, Or is they a way I could write a query (view) in Access which would do the whole lot for me (select the priority records and then random records up to 3)?
I know how to generate random record from a database, the problem i need to overcome is like this:
1.If the user refreshes the page is a way i can control the randomized data from not repeating itself on display?
I am trying to write an array of random numbers to a database. The array part is working fine, but when I go to update the dataabse, it inserts the last value of the array into all the fields in the database .....
Dim MyValue,sqlRandom
Dim arrayRandom(8)
for i = 1 to 8
Randomize
MyValue = Int((100 * Rnd) + 1)
arrayRandom(i) = MyValue
response.write "<p> Array Value:" & arrayRandom(i)
sqlRandom = "UPDATE CarParkDetails SET FreeSpaces = '" & arrayRandom(i) & "'"
Conn.execute(sqlRandom)
next
I can't see whats wrong!
I have this page where I want to display 3 random pictures in a vertical table. Each picture represents a record in an Access database. The field "picname" holds the name of the picture (e.g. "pic1.jpg", "pic2.jpg", etc). Each record has a unique ID. How do I go about selecting these 3 records? I want the pictures to alternate everytime someone enters the page or refreshes it. I found a couple of javascript options, but they only choose the picture from within a folder, and I need to be able to link the pictures to each record.I don't know if I made myself clear enough.
View Replies View RelatedI am doing a simple program which display random records to students.The student table has the following fields(Access Database) Code:
1.Studentid-Number
2.Studentname-Text
3.Class-Text
4.Ans-Text
and Question table as
1.Questionid-Number
2.Questions-Text
Now What i am trying to do is , when the first time is student is login,he wil be shown a random record from the question and his answered wil be stored in the Ans field of the student table with column separeated.
The he will be redirected to the same page with one new question.This question should not be in the Ans Field, and must be randomly generated.I am using this code.But this not working. Code:
Here's what i need:
[vbs]
"SELECT * FROM Articles WHERE Category = 'Reviews' and SubCat = {RANDOM CATEGORY} LIMIT 5;"
[/vbs]
Now, I think the last post on the thread I read said the guy could make an Array and just pick a random item out of that...and that makes sense in my case, listing all the Categories and then picking a random one.But, I don't know how to do it! I don't have much experience in arrays
i am currently working on an online test tool using ASP. Now, the questions would be generated randomly from a database(access), so two or more candidates will not have the same question. There will be one question per page. Now, i have successfully generated the radom questions from the database.
But i have a problem which is:
1. When i click the next link to go the next question, my code displays the question on the previous.
2. Also, when i click on the previous link to go back to the previous question my code changes the question from the previously answered to a new question. Code:
Im looking for a very simple and small script that will display 2 random records for a database, but i havnt found one yet. Can someone help me on this one?
View Replies View RelatedI'm trying to create a portion of script that would select x (variable) number of random records from a table.
in PHP, I could do this pretty simply with a line like, "select * from table order by rand() limit x", but the solutions I've seen so far for asp and access involve things like 40 lines of code, selecting the entire contents of a database, creating temporary tables, etc.
Is there any quick and dirty way of doing this?
i want to select some records from my database by random. i want also to set a limit (limit=9).
View Replies View RelatedI want to select 5 random records from my database..I tried to suft the net and foundout this sql
SELECT TOP (3) Question, Choice1, Choice2, Choice3, Choice4
FROM Question
But when i tried to execute,i t always gave me the most top 2 records. why?Is this sql statement woring?How can i select 5 random records from the database?
Do you have any idea about weighted random records ? (for MSAccess AND SQL Server) Also can I get weighted random records just by SQL Language ?
View Replies View RelatedI have a tough question that i ca't get over it for all the day.
I have two different news tables. I can't get any of them and list.
Bu i want to do something different. I want to get both and randomize them and list them.
for example,
1. news (from the 1st db)
2. news (from the 2nd db)
etc.
is that possible, because i couln't find any solution for this.
I have been using this script which basically works fine, with on hitch. I populate a recordset from a database. Then, use the total number of records as a UBound.
I then want to display 9 random records. I get my 9 random images, but for some reason, if I do a sort by ID on the database, the lowest numbered ID file never comes up in the list. Here is my code: Code:
I have to develop an online quiz on my website. the site is developed in ASP.
i have a access database of the questions, the multiple ans.s and the correct ans. every quest. has an unique id.
i want a way by which any 10 'unique' quests. will be selected from the database everytime an user takes the test.
The following code should select the specified number of records randomly from the database .....
View Replies View RelatedI know there are plenty of threads relating to 'random' records, but non of the code samples seem to return random results each time I refresh the page; or don't show any results at all? The ID numbers for my recordset are not necessarily consecutive numbers (some items may have been deleted). I simply want to feature 2 or 3 random news teasers on my home page WHERE feature="yes". I guess I need to call 3 random id's, and keep looking until a record is returned? I would also like to change the number of 'teasers' displayed via another database table - I can do this later, but the code has to accommodate a flexible way to change how many records are returned.
Here's the Access table:
news (TBL):
id
title
shortdescr
longdescr
feature
If you have a possible answer for me could you please provide sample code and spell it out clearly.
I Have searched the forum but have no solution to this problem.
I want to display my records in a random order. I loop through my records so I don't know how many records will be displayed. I dont want to count the records and then use the TOP statement. I'm looking for a better solution.
Set rs = Server.CreateObject("ADODB.Recordset")
rs.Open SELECT test FROM testTable WHERE testId = 1, objConn
Do While Not rs.EOF
Response.Write "<b>" & rs("test") & "</b>" <- I want theese records to be displayed in random order
rs.MoveNext
Loop
Anyone has a solution to this problem?
How can I do it?
View Replies View RelatedI need to pull five records randomly from a database, and display them on a web page. These need to change weekly.
Is there a way to do this in ASP?
I have a shoppingcart which is saved in an array. When the user goes to the checkout and and presses the order button the contents of the array gets saved in a databasetable. This all works fine.
The problem that I have is that I want the articles that the user ordered get subtracted from the Quantity I have got in my database. But I don't know how to tell the database which records have to be updated. Code:
I want to save db records of dates in an array something like the below(I know it's wrong, i'm just trying to describe what I want)... Code:
View Replies View RelatedHowever, what I want to do is include a request.querystring("ID"), so that IF an ID is defined, eg ID=3, , it will display the relevant (not random) information. I've tried this every way I can think and get type mismatches, etc etc. It's probably really simple but I can't see it.
<%
limit=3
redim link(limit)
redim image (limit)
link(1)="xxx"
image(1)="image1.jpg"
link(2)="xxx"
image(2)="image2.jpg"
link(3)="xxx"
image(3)="image3.jpg"
randomize
random=int(rnd*limit)+1
%>
<center>
<a href="<%= link(random) %>">
<img src="<%= image(random) %>" border="0"></a>
I just wanted to know whats the best way to generate 50 or say X amount of number at random without having to repeat any of the previous number...
so far I've the following:
[VBS]<%@LANGUAGE="VBSCRIPT" CODEPAGE="1252"%>
<%
function RandomNumber()
dim theRandom
Randomize
'RandomNumber = Int((upperbound - lowerbound + 1) * Rnd + lowerbound)
theRandom= Int((99 - (0) + 1) * Rnd + (0))
if (theRandom<10) then theRandom = "0" & theRandom
RandomNumber = theRandom
end function
%>[/VBS]
and then I've this in the body of HTML doc: Code:
We have the need to have a random token (a 16 char alphanumeric field) to be used as the key for one of our SQL tables. I have created a random token generator, however after only 3 months in production, it appears that we had an instance where a token that already existed in the tables was created. There are 3810 records currently in the database so it isn't like there are billions of records there.
I contacted an old college buddy of mine who is a mathematician, and he claims, assuming that random really does mean random, that the chances of getting a duplicate token are 1 in 79.5 septillion (79,500,000,000,000,000,000,000,000).
So my conclusion is that this was either a complete freak of nature occurance, or my random generator isn't really all that random. Here is the code behind how I am generating this: Code:
I am trying to generate a random number. I am using randomize and then rnd to return a decimal number between 100 and 120. This will give me a longitude. I am doing something similar to generate a latitude.
I created this on a page which refreshs every minute. I put these points into a map and they are showing up in groups of straight lines. Since rnd is time based will refreshing every 60 seconds return similar numbers?
The problem concerns 2 tables, cart_products and cart_shoppingcart.
Cart_products contains all the product data (eg, prices, product's key name, etc), but most importantly, it contains the quantity of stock (prod_quantity) for each item.
cart_shoppingcart contains all of the user's items in their shoppingcart, including those that are part of an (customer) order; these have the order_number to differentiate from those that aren't in any order (their Order_number is 'no_order', the others have the order number).
Now, what I want to do is this:
For every item in the order (ie, every entry in cart_shoppingcart that matches the username and order number), take the quantity (x) the customer is ordering, then take the quantity of stock remaining (y), then subtract x from y to create the new stock level (z) and update the appropriate record in cart_products with z (all this with SQl preferably).
I was thinking of using a Do while loop, but realised that it wouldn't work as I'd have to use several SQL statements and then I'd run into a problem the minute ASP reads "objrec.movenext".
I dump the entire recordset into an array:
If not rs.EOF Then
aEmp = rs.GetRows()
Contents of the array are in this order:
EmpID,EmpName,Indent,Sub_ID,Lft,Rgt,MgrID, LastName
This query sort on the basis of Lft and Rgt columns.
The name of the array is: aEmp.
My question here is how can I get only the LastName from the aEmp array into another array so that I can sort the names alphabetically and then display the employees in the alphabetical order.
Or is there is another way I could this by using the same array while keeping the lft and rgt sort of the query? If I sort based at the SQL query level, I can see the names sorted by the lft, rgt and lastname, but since the lastname is at the end of the sort list - it does not appear alphabetically.
In working with arrays, I have found that I am unable to dimension and array
with a variable that has an integer value but I can redimension one this
way. I haven't see any information that tells me if this is a requirement,
although it appears to be because I get an error if I try it.
Ex.
Dim b
b = 10
Dim a(b) ' this errors out but
Dim a() ' this
Redim a(b) ' works
Code:
I'm trying to pull the last 5 records from my database.
<% j=5
rs.MoveLast
While ((j>0) AND (NOT rs_article.BOF))%>
''Execute HTML and data insertion here
<%rs_article.MovePrevious
j=j-1
Wend%>
Everytime I attempt to run this code, I recieve an HTTP 500- Internal Server Error. It tells me no more than that. I know that my connection settings are OK because when I move forward through the database (first five records), the code executes without error. And yes, my Cursor type is Dynamic.
Alternatively, I would also like to know how to add new recordset to the beginning of a database rather than the end.
I have an Access database with two fields that I would like to group by. The two fields are location and department. Field names are "Location" and "DeptName".
I have the code correct for grouping by location. That code looks like this: Code: