Random Number Procedure Problems!
Sep 7, 2006
Hey Guys, I have a quick stored
procedure question for you. I created a procedure that returns a randomly
generated number.
I know there is a built in
Rand() function but I need to be able to
specify the range. Anyways, it€™s returning multiple numbers (1 for each row in
the tempTable)
But I just want one number returned.
I tried using MAX( ) but that€™s not a good way of doing it.
My question is, how do I return just
one record or number?
Thanks
Fellas,
Chris
ALTER PROCEDURE
dbo.spx_GetRandomNum
AS
DECLARE @Start_Num int
DECLARE @End_Num int
DECLARE @ReturnValue
int
DECLARE @RecNum
int
DECLARE @CurrentRec
int
DECLARE @MyCount
int
SET @Start_Num=1
SET
@End_Num=100
CREATE TABLE #tblTemp (CurrentRecNo
int IDENTITY(1,1), RandomNumber int null)
SET @MyCount = ( @End_Num -
@Start_Num ) + 1
SET @CurrentRec = 1
WHILE @CurrentRec <= @MyCount
BEGIN
SET @RecNum
= CAST((RAND() * @MyCount) AS int) + @Start_Num
INSERT INTO
#tblTemp (RandomNumber) VALUES (@RecNum)
SET
@CurrentRec = @CurrentRec + 1
END
SET
@ReturnValue = (SELECT RandomNumber FROM
#tblTemp)
DROP TABLE #tblTemp
RETURN
@ReturnValue
GO
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Apr 15, 2002
Generates a true random number from xxx to zzz. Uses a table variable so it all depends on the boundaries you specify how long it will take.
create procedure random_number
@lower int = 0,
@upper int = 256,
@number int = null output
as
set nocount on
declare @numbers table (number_id int identity(1,1), value int)
if @lower > @upper
begin
set @number = @lower
set @lower = @upper
set @upper = @number
end
set @number = rand((datepart(mm, getdate()) * 100000) + (datepart(ss, getdate()) * 1000) + datepart(ms, getdate()))
while (select count(*)
from @numbers) < (@upper - @lower + 1)
begin
insert into @numbers (value)
select (@upper - @lower + 1) * rand() + @lower
end
select @number = value
from @numbers
order by newid()
go
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Oct 8, 2005
I need to update an integer column in my table with a random number. Here's what I've done so far (with the table name and column names changed):
UPDATE dbo.MyTable
SET Column1 = RAND() * 1000000
My question is, how come the values in my column all have the same value? I thought the RAND function gives out a random number? How can I update my table to generate random numbers?
Thanks in advance.
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Nov 27, 2004
Hi,
How can I update my users table and set the password field to a random number or string.
eg.
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even better would be a randomly generated alphanumeric string.
All help much appreciated.
Cheers,
RG
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Feb 23, 2005
i have an application that uses a table for login access, for security reason i need to get a random numbers in this table daily. table consist of just two columns, userid and password. This table will be printed out on the web for users to get valid username and pw daily.
I m thinking about a job or dts package that will run once daily with a sql script to generate random number (referable 5 digit-letters and numbers), delete the table and re-create the table with same set column names and insert the random values in username and pw column.
Will appreciate help on this
Thanks
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Aug 2, 2007
How to create random number for the value in other colum. Please help and urgent
I have a table with 4 column ( ID, Ori_Quantity, Rand_Quantity, Location)
If Ori_quantity < 5000 then
Rand_quanty as qty = I want Random number within 100
Else If Ori_quantity = 0 or < 10 then
Rand_quanty as qty = I want Random number within 7
End if
From tblname where Location = 'DAS'
I have around 2500 field. So when I run the query I expect the result should be
like below
Ori_Quantity, Rand_Quantity
------------ -------------
4000 90
2986 57
2500 89
I don't want to pass any parameter and I am new. Please help
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Mar 25, 2008
Hi,
I need to generate random numbers that will always contain 9 digits.
How can I do that?
Thanks
Whisky-my beloved dog who died suddenly on the 29/06/06-I miss u so much.
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Jun 9, 2007
I just wana make a random id number based on4 digits-for examples??Thanks in AdvanceCh.Yallin
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Sep 28, 2007
In a Name table, I need to generate unique 6 digit random numbers in a field called UniqueID for all records that have the ID field populated.
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Regards,
Polar Bear
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Jan 15, 2005
I'm building a test database and I need to randomly create phone numbers in the format xxxxxxxxxx
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Dec 11, 2007
I need to generate a random 10 digit alphanumeric string that is also unique within a table. My application will be calling a stored procedure to insert this number into the table. This number will be associated with a id from another table. Is it better to generate the random number within sql (and perform the lookup at the same time), then just pass the number back to the calling application ?
If the calling application generates the number, it will also need to make a call to check if its unique. So im thinking it would be best to simply have sql generate this random number, check the number against the table and then insert the new record.
thoughts ?
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Dec 1, 2015
Lets say we have a table (tblProducts)
ID  Item           RandomNumber
-------------------------------------------
1Â Â Â JEANSÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 1234567
2Â Â Â SHIRTÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 72813550
3Â Â Â HOODÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Null
4Â Â Â TROUSERÂ Â Â Â Â Â Â Â Â Â Â Â Â 72191839
5Â Â Â BLAZERÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 0
I want to perform a query so that SQL should look for RandomNumber Values and set a Unique Random Number Where RandomNumber Value is Null or 0.So I have got a solution as one of the MSDN Member shared the below query
select id,item,RandomNumber=Case when RandomNumber=0 then (select floor(rand()*100000000-1))
when RandomNumber is null then (select floor(rand()*100000000-1))
else RandomNumber end from tblProducts
So, can you all confirm me, that performing this query ensures that if a Value is assigned to one of the Item in RandomNumber Column, that value will not be assignend to any other Item in RandoNumberColumn.
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Aug 4, 2005
I try to set up a testing sample table which contain one integer project_ID field for table Sample around 500 records, and want the project_ID to be random number within 1 to 99, how to implement script todo it?
thanks!
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Hi
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I need to assign a random number between 0 and 1 to all eligible cases of cancer.Â
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site
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Oct 3, 2015
I have a function which generate random number in range :
CREATE FUNCTION Func_Rand
(
@MAX BIGINT ,
@UNIQID UNIQUEIDENTIFIER
)
RETURNS BIGINT
AS
BEGIN
RETURN (ABS(CHECKSUM(@UNIQID)) % @MAX)+1
END
GO
If you run this script you always get result between 1 and 4
SELECT dbo.Func_Rand(4, NEWID())
BUT, in this script sometimes have no result !!!!!!! why??
SELECT 'aa'
WHERE dbo.Func_Rand(4, NEWID()) IN ( 1, 2, 3, 4 )
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Jun 20, 2001
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In the stored procedure I have many if statements to chose the correct sql statement.
As the no of clauses in the where statement can vary, it can become messy script.
Has anyone dealt with this scenario. What is the best strategy ?
A simple illustation of this is as follows
A statement with two clauses :-
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A statement with three clauses :-
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hi and thanks for your help. Is there such a code that return whether or not a field is either positive or negative. If I have a field that contain numeric value. lets say -500
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writing the procedure for incrementing the number based on alphabets from A-Z
for example:
if alphabet is A then increment should be A001,next A002..etc
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.
.
.
.
if alphabet is Z then increment should be Z001,next Z002...etc
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Jan 22, 2007
Hi to all,
How can I Pass different number of parameters to a Stored Procedure?
In my Requirement,
Some times i want to pass 2 parameters only,
In some cases i want to pass 6 parameters.
How can i do this?
Please give me a solution.
Thanx in advance...
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Query
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