s it possible to create random numbers within a range like : .28 to .57 ?
UPDATE Nop_ProductVariant
SET percent = RAND() .28 to .57
So the percent field would look like :
ProdID percent
1001 .38
1002 .29
1003 .40
etc . .
all rows having a different value
I have a table with a column ID of ContentID. The ID in that column is all NULLs. I need a way to change those nulls to a number. It does not matter what type of number it is as long as they are different. Can someone point me somewhere with a piece of T-SQL that I could use to do that. There are over 24000 rows so cursor change will not be very efficient.
Thanks for any help
I am trying to get random numbers to have a unique value for different processes, then I can identify each process. What happens is that I use rand() function without seed, so I got my random numbers, but after shutting down SQLServer and try to get again another random number after booting up, the same series of random numbers is given again and again. So if anyone knows how I can get unique values,even though reseting the server, and using random function or any other method which automatically provides unique values,I'll really appreciate it if you let me know it.
This is the function: select rand()
Alberto.
Hi,
I have an int column that i want to have random numbers inserted into it.
How can I create random integer numbers to insert into my column?
Thanks
Whisky-my beloved dog who died suddenly on the 29/06/06-I miss u so much.
Hi, how do I use the Rand Function to generate a Random integer value between 1 and 20. Any help will be appreciated.
Thanks
I have a table with a field called "host" and I want to replace the value of this column in each row with 'Host' followed by a random number. I have created the below function to do this:
DECLARE @Random varchar;
SELECT @Random = CONVERT(int, (20+1)*RAND())+ 1;
UPDATE AnalogLines Set [Host Name] = 'Host' + @Random
This sorta works... the problem is, the random number is determine and then the SAME random number is applied to each row. I need a different random number for every row. Any ideas?
Hi there... I've got an interesting one, that I can't seem to get my head around. Maybe some legend out there might be able to give me a hand...
I'm looking for a way to produce a weighted set of random numbers. I'm doing some work for a client at the moment, and they want to issue 3 random "reward cards" to their members at certain times. These are a bit like discount vouchers etc. The problem is some cards have need to have a higher frequency than the others. I guess a similar problem to baseball cards, you buy a pack of cards, you get mostly common cards, but every now and then, you get a rare card.
Here is the table setup:
CREATE TABLE [dbo].[Cards](
[CardID] [uniqueidentifier] NOT NULL CONSTRAINT [DF_Cards_CardID] DEFAULT (newid()),
[CardName] [nvarchar](50) NOT NULL,
[InsertRatio] [float] NULL,
CONSTRAINT [PK_Cards] PRIMARY KEY CLUSTERED
(
[CardID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
INSERT INTO [dbo].[Cards]([CardName],[InsertRatio]) VALUES('Common 1', NULL) /* Null implies the card is a common card */
INSERT INTO [dbo].[Cards]([CardName],[InsertRatio]) VALUES('Common 2', NULL) /* Null implies the card is a common card */
INSERT INTO [dbo].[Cards]([CardName],[InsertRatio]) VALUES('Common 3', NULL) /* Null implies the card is a common card */
INSERT INTO [dbo].[Cards]([CardName],[InsertRatio]) VALUES('Common 4', NULL) /* Null implies the card is a common card */
INSERT INTO [dbo].[Cards]([CardName],[InsertRatio]) VALUES('Common 5', NULL) /* Null implies the card is a common card */
INSERT INTO [dbo].[Cards]([CardName],[InsertRatio]) VALUES('Common 6', NULL) /* Null implies the card is a common card */
INSERT INTO [dbo].[Cards]([CardName],[InsertRatio]) VALUES('Common 7', NULL) /* Null implies the card is a common card */
INSERT INTO [dbo].[Cards]([CardName],[InsertRatio]) VALUES('Common 8', NULL) /* Null implies the card is a common card */
INSERT INTO [dbo].[Cards]([CardName],[InsertRatio]) VALUES('Common 9', NULL) /* Null implies the card is a common card */
INSERT INTO [dbo].[Cards]([CardName],[InsertRatio]) VALUES('Rare 1', 0.02) /* 1:50 ratio */
INSERT INTO [dbo].[Cards]([CardName],[InsertRatio]) VALUES('Rare 2', 0.02) /* 1:50 ratio */
INSERT INTO [dbo].[Cards]([CardName],[InsertRatio]) VALUES('Rare 3', 0.02) /* 1:50 ratio */
INSERT INTO [dbo].[Cards]([CardName],[InsertRatio]) VALUES('Very Rare 1', 0.005) /* 1:200 ratio */
So what I need to do, is have a Stored Proc that I can execute and it returns back 3 random rows. Now in that single run, a card can't be duplicated.
Notice the Insert Ratio column? This has the ratio of the probability, eg a 1:50 insert ratio is equal to 0.02. For the common cards, a NULL value indicates it is a common.
Eventually, this table would have about 1000 rows in it, and about 200 of those would have various ratios (eg 1:50, 1:200, 1:1000, 1:8000 etc)
Any ideas or comments?
Thanks in advance.
Leddo
Brisbane, Australia
I'm grappling with this issue which I thought was basic VB programming; I'm trying to insert a random number (between 100 and 999) into a SQL table column (=Status_ID). This is input as part of a user submitting helpdesk requests via a APS.Net Web Form. The 'Status_ID' field is obviously not visible to the user but will help reference this Helpdesk request on the database.Here is the code:Protected Sub submitButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles submitButton.Click If Page.IsValid Then ' Define data objects Dim conn As SqlConnection Dim comm As SqlCommand ' Read the connection string from web.config Dim connectionString As String = _ ConfigurationManager.ConnectionStrings("ITNet_Students").ConnectionString ' Initialize connection conn = New SqlConnection(connectionString) ' Create command comm = New SqlCommand( _ "INSERT INTO HelpDesk (First_Name, Last_Name, StudentID, PersonalEmail," & _ "CategoryID, SubjectID, Description, StatusID) " & _ "VALUES (@First_Name, @Last_Name, @StudentID, @PersonalEmail, " & _ "@CategoryID, @SubjectID, @Description, @StatusID)", conn) ' Use randomize Randomize() Dim randomvalue As Integer ' Generate random value between 999 and 100. randomvalue = Int((900 * Rnd()) + 100) ' Add command parameters comm.Parameters.Add("@First_Name", System.Data.SqlDbType.NVarChar, 50) comm.Parameters("@First_Name").Value = fnameTextBox.Text . . . comm.Parameters.Add("@StatusID", System.Data.SqlDbType.Int) comm.Parameters("@StatusID").Value = randomvalue 'Enclose database code in Try-Catch-Finally Try ' Open connection conn.Open() ' Execute the command comm.ExecuteNonQuery() ' Reload page if the query executed successfully Response.Redirect("HelpDesk.aspx") Catch ' Display error message dbErrorMessage.Text = _ "Error submitting the help desk request! Please try again later, and/or change the entered data!" Finally 'close connection conn.Close() End Try End If End Sub----------------------------------------------------------------------------------------------------------------------I keep getting the error message under 'Catch' and the page 'HelpDesk.aspx' is not reloading; the 'comm.ExecuteNonQuery()' is not executing.Can anyone spot any inconsistencies in the declaration of the 'randomvalue' variable?P.S: this code works fine if you replace 'randomvalue' with any integer in 'comm.Parameters("@StatusID").Value = randomvalue'
View 2 Replies View RelatedHello,
I need to sample data in a very large table in SQL Server 2000 (a gazillion rows of Performance Monitor statitics).
I'd like to take the top 5%, for instance, based upon a column containing random numbers.
Can anyone suggest a highly efficient method of populating a column with random numbers.
Thanks in advance.
Rod
While trying to solve a SQL challenge I found myself trying to understand what is happening when you CAST a INT to date time.
Trying to understand the results. Here are some random numbers and Castings. My question is why do they produce the datetimes they do?
SELECT CAST((1.1) AS DATETIME)
SELECT CAST((200) AS DATETIME)
SELECT CAST((15) AS DATETIME)
SELECT CAST((99.99999) AS DATETIME)
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 )
What I am trying to do is get all of the records in a table that are out ofsequence so I know which account numbers I can reuse. I have a rangeof account numbers from 50100 to 70100. I need to know which accountnumbers are not stored in the table (not currently used) so I can use.For instance say I have the following data in table:Account Name--------- --------50100 Test150105 Test250106 Test4......I should see the results:50101501025010350104because 50101-50104 are available account numbers since not currently intable.Thanks.
View 2 Replies View RelatedI'm trying to add random dates to date column in existing table, but these need to be week days (Mon-Fri).I'm a beginner in TSQL, worked with MS Access many years - in Access I used to do something a bit different:
DateAdd("d",(Int((5*Rnd([ID]))+1)),#31/08/2015#)
Table had ID, I gave a date it would start from (31/08/2015) and then range of ID to apply new date:
UPDATE table1 SET table1 .date = DateAdd("d",(Int((5*Rnd([ID]))+1)),#31/08/2015#)
WHERE (((table1 .ID) Between 1 And 5456));
This was applying random dates in range of 31/08/2015 + 5 days, so I could give a starting date of Sunday to get random dates populated over given IDs from Monday to Friday.Now, how can I do it in TSQL?I have a table with ID and dates column. I would like to apply new random dates from some range, but making sure they will be week days.
Given a Table1 with two columns 'Name' with some N rows of data and another Table2 with one column 'SeqNo' with N rows, each of which contains a unique integer which can be ordered monotonically, I want to do an INSERT into some Table3 with two columns 'Name' and 'SeqNo' such that each INSERT'd row gets one of the unique integers.
E.g. -
Table1 contains 'Fred','Tom','Mary','Larry'
Table2 contains 6000978,6000979,6000980,6000981
INSERT INTO Table3
SELECT Table1.Name
Table2.SeqNo
FROM Table1
And I want to get Table3
'Fred',6000978
'Tom'.6000979
'Mary',6000980
'Larry',6000981
How can I reference Table2 so that Table2.SeqNo will 'line up' properly? Note that the ordering of the SeqNo values isn't mandatory as long as each SeqNo is assigned to one and only one row.
On edit: Table2 isn't required, it's just the way I started thinking about it. It would be nicer to just have two integer vars, @StartSeqNo = 6000978 and @EndSeqNo = 6000981 for he example above. Either way is fine.
Hi there,I am trying to create a UID that is unique within my SQL Server. There are many users accessing the Server in seperate databases, but then I want to combine all the data from these tables, keeping the ID from each one as a primary key. I have written the following function, but when i call it as a default value for a field, it does not produce a unique number. CREATE FUNCTION GETNEXTID(@CURDATE DATETIME)RETURNS BIGINTASBEGINRETURN (SELECT CAST(CAST(DATEPART(YY,@CURDATE) AS VARCHAR) +RIGHT('0' + CAST(DATEPART(M,@CURDATE) AS VARCHAR),2) +RIGHT('0' + CAST(DATEPART(D,@CURDATE) AS VARCHAR),2) +RIGHT('0' + CAST(DATEPART(HH,@CURDATE) AS VARCHAR),2) +RIGHT('0' + CAST(DATEPART(SS,@CURDATE) AS VARCHAR),2) +RIGHT('00' + CAST(DATEPART(MS,@CURDATE) AS VARCHAR),3) AS BIGINT))END Can anyone help?
View 2 Replies View Relateduse AFMIF EXISTS (SELECT * FROM sysobjects WHERE type = 'U' AND name='uye_idler') drop table uye_idlerCREATE TABLE uye_idler ( uye_no int NOT NULL, ) GO DECLARE @uye_numarası int Set @uye_numarası = 1 WHILE @uye_numarası < 15001 BEGIN INSERT INTO uye_idler VALUES (@uye_numarası) Set @uye_numarası = @uye_numarası + 1 EndHi , I am able to create 15000 records by the codes above .By the same way I want to create random texts as ASD ,WER,SAD,DFG etc. How can I do this ? Thanks ...
View 1 Replies View RelatedI'm trying to write a function that will retrieve the last backup date/time of a particular database on a remote server (i.e. by querying msdb.dbo.backupset). Unfortunately, you can't use sp_executesql in a function, so I can't figure out a way to pass the server name to the query and still be able to return the datetime value back to the calling TSQL code (so that rules out using EXEC().
View 3 Replies View RelatedFor a new project. I need to create random alphanumeric characters as primary key values when inserting a record.
eg: cmSbXsFE3l8
It can start from 4 digit characters and can grow to 6, 7 as required
The database will involve more than 10000 concurrent users.
I don't want to use guid or auto increment integer or sequence.
Hello,
I use ODBC driver to perform SQLServer commands from C/C++ application.
An "INSERT INTO <table> (<column>) VALUES (NULL)" command has a random behavior in a SQL2000 Server running on WindowsXP.
The <column> in this command has 2 definitions about the NULL value :
- the NULL is accepted in the table definition, with <column> ut_oui_non NULL".
- the NULL is rejected in the type definition, with EXEC sp_addtype ut_oui_non, 'char(1)', 'NOT NULL' and a rule to check values with '0' or '1'
1/ The column definition in any explorer show the NULL from table deffinition
2/ The "INSERT INTO" is completed in SQL Query tool, used on Windows2000 and WindowsXP computers, connected to the same SQL2000 server.
3/ The "INSERT INTO" is completed in the application, running on Windows2000 with an ODBC driver to the same SQL2000 server.
4/ The "INSERT INTO" is rejected in the application, running on WindowsXP witjh an ODBC driver to the same SQL2000 server. The error 513 means that INSERT VALUES conflicts with previous rule. So only the type definition seems to be used.
But :
5/ This is a random error, and some INSERT with the same values in this column are completed.
6/ This random error seems to be discarded by using the "Use NULLs, paddings and warnings ANSI" checkbox in the ODBC driver user source configuration.
This checkbox is only use for enforcing the ANSI syntax in SQL commands, and has no known effect on type checking.
Do you know about any conflict of column NULL value between a type definition and a table definition ?
SELECT pid, lname, visit_date, quantity
FROM customer
ORDER BY pid
pid lname visit_date quantity
-------------------------------------------
23 wang 07/23/2006 100
23 wang 07/30/2006 140
23 wang 08/05/2006 130
23 wang 08/15/2006 135
23 wang 08/22/2006 110
34 linden 06/23/2006 99
34 linden 07/06/2006 110
34 linden 07/15/2006 120
34 linden 08/26/2006 99
How do I use cursor (or is there a better way) to create an additional column "index"? "Index" starts at 1 for every unique pid
index pid lname visit_date quantity
----------------------------------------------------------
1 23 wang 07/23/2006 100
2 23 wang 07/30/2006 140
3 23 wang 08/05/2006 130
4 23 wang 08/15/2006 135
5 23 wang 08/22/2006 110
1 34 linden 06/23/2006 99
2 34 linden 07/06/2006 110
3 34 linden 07/15/2006 120
4 34 linden 08/26/2006 99
Please let me know if I can explain the my question better. Thanks in advance
I have a temp table that's populated with an insert query in as toredprocedure. The temp table has a uniqueID as the primary key.In that table I have a column SortOrder.What I want to do is to create a sequential number in SortOrder butonly for records matching a WHERE statement, for example:(pardon the shorthand...)Insert *.tblPermanent into tblTempIf myField = 1 thenSortOrder = 1(2,3,4,5,.....etc.)elseSortOrder = 0Thankslq
View 1 Replies View RelatedI'm trying to create a column of numbers that increment by one.
I'm not able to use a #temptable in the application I'm using so I cannot use IDENTITY(int,1,1).
I want to add an Id column to this query:
Select distinct sd.name,ic.TABLE_SCHEMA,ic.TABLE_NAME from sys.databases sd
cross join INFORMATION_SCHEMA.COLUMNS ic
where sd.name = 'ODS1stage'
order by TABLE_SCHEMA,TABLE_NAME
How can I accomplish this without creating a temp table? I would just alter the table and insert the numbers but there are 2000 rows.
Hi,
Can anyone tell me offhand the simplest/most elegant way of updating an integer column to a sequential column of numbers with a query?
e.g given
intval | Description| Cost
0 | Descvalue0| 4.32
2 | Descvalue2| 4.33
3 | Descvalue3| 4.34
8 | Descvalue8| 4.35
change it to:
intval | Description| Cost
0 | Descvalue0| 4.32
1 | Descvalue2| 4.33
2 | Descvalue3| 4.34
3 | Descvalue8| 4.35
I think it might need a stored proc..
Many Thanks
greg
I have a report with a column which contains either a string such as "N/A" or a number such as 12. A user exports the report to Excel. In Excel the numbers are formatted as text.
I already tried to set the value as CDbl which returns error for the cells containing a string.
The requirement is to export the column to Excel with the numbers formatted as numbers and the strings such as "N/A' in the same column as string.
Any suggestions?
I have a merge replication in place. I increased the identity_range to 100000 for a table. I have done this both ways, via the properties of the publication on SSMS, and via TSQL. I have call sp_adjustpublisheridentityrange. Then I recreated the sanpshot. EXEC sp_adjustpublisheridentityrange @table_name = N'Label', @table_owner = N'caseup';but after synchronization, the range defined in the table's constraint has not changed and now all of the identity values are used up. All inserts are failing.What needs to be done to force the publisher to recreate the identity range on a subscriber(s).
View 3 Replies View RelatedI need to create records based on date range on monthly basis, please help.
Here is an example:
ID Startdate EndDate
1 20070301 20070522
and I need to create the following data set based on start and end date range
ID Startdate EndDate
1 20070301 20070331
1 20070301 20070430
1 20070301 20070522
Hi,I need to extract randomly 5 records from the table "Questions". Now I useSELECT TOP 5 FROM Questions ORDERBY NEWID()And it works. The problem is that I need an additional thing: if SQLextracts record with ID=4, then it should not extract record with ID=9,because they are similar. I mean, I'd like something to tell SQL that if itextracts some questions, then it SHOULD NOT extract other ones.How can I do it?Thanks!Luke
View 1 Replies View RelatedOk, I have two parameters - @StartDate and @EndDate. We only care about the date part of these paramters. What I would like to do is create a table with one record for each date between these two values. For example:
@StartDate = '01/01/2008'
@EndDate = '01/8/2008'
Should yield a table with 9 records in it for every day between @StartDate and @EndDate like so:
01/01/2008 <datacol1> <datacol2>
01/02/2008 <datacol1> <datacol2>
01/03/2008 <datacol1> <datacol2>
01/04/2008 <datacol1> <datacol2>
01/05/2008 <datacol1> <datacol2>
01/06/2008 <datacol1> <datacol2>
01/07/2008 <datacol1> <datacol2>
01/08/2008 <datacol1> <datacol2>
I know I could just do a WHILE (@StartDate <= @EndDate) loop and insert records into a temp table but I'm looking to see if there are any new methods/techniques to achieve this with a more simple statement.
I re-created a publication that was having problems and it gives this error when I start the snapshot agent from SQL Server Management Studio: I am stuck on how to resolve - any ideas?
"The publisher's identity range allocation entry could not be found in MSmerge_identity_range table. Transaction count after EXECUTE indicates that a commit or ROLLBACK TRANSACTION statement is missing. Previous Count = 1, current count = 2."
select * from MSmerge_identity_range returns 19 entries but I don't know how to fix.
I have tried deleting and re-creating but always get this error.
My other publications and subscriptions are working fine and I was able to create a new test publication that worked but can not get this one to work that worked fine up until today.
Any ideas?
I'm using ASP and SQL Serv 2000. What I need to get from 2 tables (company & customers) is random 10 customers from random 20 comp.
Anyone got an idea how to do this??? I've spent 2 days trying to get stored proc. or T-SQL to work, but nothing good came out of it. I can get 1 comp and 10 cust, but not a grouped list of 20 comp. w/ 10 cust. each.
Help is greatly appreciated.
Why does M$ Query Analyzer display all numbers as positive, no matterwhether they are truly positive or negative ?I am having to cast each column to varchar to find out if there areany negative numbers being hidden from me :(I tried checking Tools/Options/Connections/Use Regional Settings bothon and off, stopping and restarting M$ Query Analyer in betwixt, butno improvement.Am I missing some other option somewhere ?
View 7 Replies View RelatedI am attempting to write a SQL query that retrieves info processed between two times (ie. 2:00 pm to 6:00 pm) during a date range (ie. 8/1/06 to 8/14/06)... I am new to SQL and am perplexed... I have referenced several texts, but have not found a solution. Even being pointed in the right direction would be greatly appreciated!!
View 6 Replies View RelatedI have an 'ID' column. I'm up to about ID number 40000, but not all are in use, so ID 4354 might not be in any row. I want a list of all numbers which aren't in use. I want to write something like this:
select [numbers from 0 to 40000] where <number> not in (select distinct id from mytable)
but don't know how. Any clues?