Hi, for some reason I want to have a unique ID with a seed and random Identity increment (I want an ascending ID's but without able to know how many objects there are).
any ideas?
thanks in advance
I once came across a database in which when ever a row was inserted, a unique random code was also inserted in a column. This code generated was similar to format like {8A5FE5F1-6BDA-476C-A4DB584A7710FBF91121054625}. I was told that SQL2000 has some inbuilt functionality for this.
Any idea on how to do this using SQL2000 or coding.
I feel this is much better than Identity Column as using autonumbers in quesrystring is too much risky as they easily readable.
Please help.
Thanks
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 RelatedI 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 ?
Lets say we have a table (tblProducts)
ID Item RandomNumber
-------------------------------------------
1 JEANS 1234567
2 SHIRT 72813550
3 HOOD Null
4 TROUSER 72191839
5 BLAZER 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.
Hi I am using VS 2005 with SQL 2005.
I had a Datagrid and i Need to bind data into it.
I need to show Random Unique ID's based on the Parameter i pass.
I wrote select top 5 * from Employee order by NEWID()
for this i had created a Stored Procedure as
create Proc Demo(@N int)as beginselect top @N * from Employee order by NEWID()end
Its showing a syntax error near @N. How can i pass the parameter for Select Top @N * from .......
Hi
I have a sql procedure. I need to create UNIQUE random 13 digit number to use for barcode.
How do I generate 13 digit UNIQUE random in sql procedure?
Advance thanks
Hello!
I is true that SQL-Server use lower values than last integer value (in auto incremet field). Is there option that i could prevent that. So the Server would always put + 1 for the auto increment value.
Thanks
Juissi
If delete all the records from a table that has an incremental identity. Is there a TSQL way of reset the first number on an insert back to be 1 again without going to the table taking it off then saving it the putting it back on again?
View 2 Replies View RelatedHello, I need some help writing a script to generate Identity keys. I cannot use the row number generator because I would like to start the identity at a package level variable. Is this possible?
Thank you in advance
HiI have a Jobs Table: Job_ID,User_ID,Job_Info,...Job_ID is the Primary Key.I want to add [Job_ID_PerUser] so I wiil get:Job_ID Job_ID_PerUser User_ID1 1 A2 1 B3 1 C4 2 A5 3 A6 2 CThanks
View 4 Replies View RelatedIam trying to add a column to an existing table that would be an "identifier". I called it "ReadingNumber" and selected Identity "Yes" and "Identity increment" as 1.
When I add it, it just gives the rows random numbers instead of by the order they were inserted into the database by.....is there a way to autonumber the columns correctly? I have a COLUMN called Date and also one called Time that have the date and Time, but the format is char.
Would I have to convert the date time columns into something SQL understands, sort them ASC or DESC and then do the Identity column add?
Thanks for any help
Edited
hi,
i really need ur help..
I am creating an a stored procedure which could insert new records, the identity of the primary key in my table is not incremented. i want to increment the id when adding a new record in the stored procedure. what would be the system for that?
thanks
Funnyfrog
Reset the Identity IncrementHello:I have a table with a bigint type column (field) that has an identity seedof 1 and an identity increment of 1. The column is the primary key for thetable.After I backup and clean out the database (delete all of the data in the DB)I need to have the column with the identiy seed/increment value reset to 1automatically. (start counting at 1 again). How does one do that, becauseas it is now, the DB keeps increasing the value of the column from where itleft off, regardless of the fact that I deleted all of the data in thetable.The DB is MS SQL Server 2000.Thanks and appreciate any help.Ryan Kennedy
View 2 Replies View RelatedI have created a table that generates a sequential id and a
stored procedure that will return that id. The trouble is
no matter what I set the Seed or Increment values to, the
id will always start with #1 and increment by 1.
My table is BILLING_TIME_ID
Identity field BT_GEN_ID
(SEED 200, INCREMENT 1)
The sp is as follows:
CREATE PROCEDURE BT_NEXT_ID
AS
INSERT dbo.BILLING_TIME_ID DEFAULT VALUES
select count (*) from dbo.BILLING_TIME_ID
GO
I have double checked that Identity_Insert is set to off for
this table. (does this default to off unless it is set to on?) Since
there is only 1 field in the table, I don`t have any indexes set.
Thanks for your help!
Toni
trying to change a column that is just a INT NOT NULL column, to have an auto-increment.
Code:
ALTER TABLE [ImpExpTables].[dbo].[ImpExp_eBayLocalNeedsDeleted]
ALTER COLUMN ID int IDENTITY(1,1) NOT NULL
just gives error at IDENTITY
Hi,
How to Change Increment Value for existing Identity Column (MS SQL2000) ?
I know how to change the seed :
DBCC CHECKIDENT (activity, RESEED,4233596)
but I need the future id generated with step 2
4233596
4233598
4233600
I would like to do it using T-sql because I will need to do it every day after syncronising with another SQL server .
Thanks,
Natalia
Hi all,
I've been thrown a curve ball late in the game on an application I'm developing. Without getting into the specifics of the application I store a unique employee ID number for all person records in it. This ID is provided to us by the companies we're servicing. Up until this point in time we didn't have need of an externally visable ID other than the one provided to us. Now, a need for an internally generated (by our application) unique ID has been discovered. This number needs to be a minimum 5 digits (e.x. 10001, 10002, ....). I could achieve this nicely by seeding an identity column at 10000 with an increment of 1. However, I've alredy made different settings for this and there are records in the db with the old ones.
My question is: If I initially set the seed / increment at 1/1 can I change this after the fact without causing data integrity problems. Will all subsequent insertions into this table just start at the new values?
Or, ideally I'd like to create a new column seperate from the PK Identity column already in place that serves the same function, incrementing a 5 digit number by 1 for each new record. Seems that you're only allowed one identity column per table though. Is there another way to achieve get the same result as identity?
Thanks!
Dear Sir,
the following code is copied from the SQL Server Help Example.
CREATE TABLE MyCustomers2 (CustID INTEGER IDENTITY (100,1) PRIMARY KEY, CompanyName NvarChar (50))
INSERT INTO MyCustomers2 (CompanyName) VALUES ('A. Datum Corporation')
ALTER TABLE MyCustomers2 ALTER COLUMN CustId IDENTITY (200, 2)
It gives the following error.
Msg 156, Level 15, State 1, Line 3
Incorrect syntax near the keyword 'IDENTITY'
Can U please guide me abt the error.
with regards,
wilfi
Hi
I am trying to use the identity data type ( column)
I am using examples from the book and management studio in sql server 2005.
I am using the identity property for the customer Id in customers table.I accidentatly executed the querry twice and I had two same record with different customer id numbers of 1 and 2 . I realised the problem and I had to delete the second record.
The problem is now even if I have deteted the 2nd record with customer id 2 , when I insert a new record the identity value ( customer Id) increments with a number after the value I deleted. i.e if I deleted a second row with customer id 2 ( identity 2) when I enter a new record it enters with a customer id of 3 and whenever i add a new record it increments from there.
So instead of first record have cust id 1 and second record customer id 2 etc , I get first record with cust id 1 , second record with cust id 3 , third record cust id 4 etc.
How can I get rid of this wrong values of identity values whenever I delete a record and try to add a new record?
Thanks
I had a strange problem today with one of the identity fields in a frequently used table. It appears that the Identity column for a table had stopped incrementing after it reached 2147483585. Since I had inherited this table, I am not sure if the identity column type has been modified from int to numeric, but the current type is Numeric (9) which is 19 precision and 0 scale value.
When resetting the seed to 1, it started working. I tried creating a temp table with numeric value and it increments well beyond billions with no problems.
Has anyone encountered this? Any best practices around defining Identity data type (ie. use int or bigint and avoide Numeric)?
Thanks
NS
I use the identity = yes for my unique columns in most of my tables that need it. I am trying to decide if I should change identity = no, and instead manually update my unique number column myself by adding one when I insert new rows.
The reason I want to do this is for maintainabilty and ease of transfering data for backup to other sql servers. I always have trouble keeping the identity numbers to stay the same as they are in the original database because when they are transfered to a db that has identity = yes, the numbers get rearranged.
It will also make it easier to transfer data from original db to another sql server db and use the data right away without having to configure the destination db to disable identity and then enable it, etc.
Any pro's con's appreciated,
Dan
Hi there,I'm new to sql server. I've created a table which can be updated through an aspx form. However coming from an access background I don't know how to generate an auto number. I've read through a number of the threads on here and keep coming across Identity or unique identifier. However I can't actually find out how to implement these.Any help would be greatCheersStu
View 2 Replies View RelatedI have a table EugeneTest(id_num, fname, minit, lname)where field "id_num" is type IDENTITY and has UNIQUE constraintLet's say 2 user execute this code at the same time:DECLARE @return integeruse EugeneTestINSERT employees( fname, minit, lname)VALUES( 'Eugene3', 'F', 'Josephs')SET @return = @@IDENTITYIs is not possible to get duplicated value in id_num column becuase ofUNIQUEconstraint, but is it possible the both user get the same @@IDENTITYnumber( for example, if @@IDENTITY is evaluated and kept somewhere in thebuffer before the data actually get written to the disk )Thanks, Eugene
View 5 Replies View RelatedHow do I get the next int value for a column before I do an insert inMY SQL Server 2000? I'm currently using Oracle sequence and doingsomething like:select seq.nextval from dual;Then I do my insert into 3 different table all using the same uniqueID.I can't use the @@identity function because my application uses aconnection pool and it's not garanteed that a connection won't be usedby another request so under a lot of load there could be major problemsand this doens't work:insert into <table>;select @@identity;This doesn't work because the select @@identity might give me the valueof an insert from someone else's request.Thanks,Brent
View 4 Replies View RelatedI've seen this error on several of my databases again and again this week:
Violation of PRIMARY KEY constraint 'PK_XXXX'. Cannot insert duplicate key in object 'dbo.MyTable'. The duplicate key value is (whatever number here). The statement has been terminated.
The thing is, the PK is unique, and the INSERT statement does not touch that column, it touches the other ones. So SQL2012 is the one that automatically generates the next and unique available value.
How can be possible that the value to be inserted (generated by SQL2012) is a duplicate one? By the way, this was not happening on the previous SQL2005 or SQL2008 server where the databases were being hosted.
Here's my SQL 2012 version: 11.0.3000.0 (SP1 applied). Runs on top of a Win2008R2 Cluster.
So for years I was using the int identity(1,1) primary_key for all the tables I created, and then in this project I decided, you know, I like the uniqueidentifier using newsequentialid() to ensure a distinctly unique primary key.
then, after working with the php sqlsrv driver, I realized huh, no matter what, i am unable to retrieve the scope_identity() of the insert
So of course I cruised back to the MSSMS and realized crap, I can't even make the uniqueidentifier an identity.
So now I'm wondering 2 things...
1: Can I short cut and pull the uniqueidentifier of a newly inserted record, even though the scope_identity() will return null or
2: do I now have to add a column to each table, keep the uniqueidentifier (as all my tables are unified by that relationship) and also add a pk field as an int identity(1,1) primary_key, in order to be able to pull the scope_identity() on insert...
I need to be able to create completely random and unique keys for a key verification system, which would require a user to enter a pre-defined key in order to activate their account, but I need to be able to create those keys on the fly.
This is going to be a key that will be mailed to them on paper, and unfortunately means it needs to be relatively short in order to prevent too much confusion while they are typing it in.
I like the newID() function in SQL, but the ID that it creates is a bit excessive to say the least for someone to have to type when registerring.
I use C#, so I wouldn't have much of a problem creating a small app to create x number of keys, which will sit in the DB until I need them, but I would rather not have to fill the DB with a million or so ID's which might never be used, and don't want to create too little that I have to track when I might need to add more, in case I start to run low on ID's.
Re-using ID's may be an option, but I would prefer to keep them intact for the life of the accounts.
If there is something that I can do to simulate the newID() function, but generate unique/random ID's which look more like this: A97-2C5-77D than this: A972C577-DFB0-064E-1189-0154C99310DAAC12 I would be very grateful to know about it.
Thanks!
I am looking to make the primary key auto increment by 1. I have found by looking around the internet that you need to do this in the Tables -> [Table Name] -> Columns -> [Column Name], Properties window, and I see the "Identity Increment" however all of the properties there are greyed out -- I can't access them. Any ideas on how to make this work?For some background: I'm running SQL Server 2005 with Visual Studio 2005. To create this database, I right-clicked on my project, and went to 'Add SQL Database', I filled in the columns all from within visual studio.
View 1 Replies View RelatedI have an MS SQL Server table with a Job Number field I need this field to start at a certain number then auto increment from there. Is there a way to do this programatically or within MSDE?
Thanks, Justin.
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 RelatedHello,
I Have a table that needs to have 2 unique number.
detail_id and detail_print_id.
detail_id is already an IDENTITY.
both fields need to be different, because when importing, it imports the same data into a table twice, with only a slight data change (and id is not one of the changes).
So I thought i could do the following:
detail_id INT NOT NULL IDENTITY(1,2),
detail_print_id INT NOT NULL IDENTITY(2,2),
--blah blah
that way, the detail_id will always be odd, and the detail_print_id will always be even. however SQL Server 2005 only allows 1 identity per table, and both these fields need to be auto generated when the field is inserted, so as to prevent double data.
is there anyway I can create a int column to auto increment, without the column being an IDENTITY??
also, I would prefer to not have to create a second table with a single column just for this work.
Thanks,
Justin
I have data for online catalogue in SQL 7.0. The web grogrammer asked me to add a unique key for reference. I used int datatype with identity seed of 1 and increment of 1. This works fine BUT when I try to import new data I get an error because the csv file has no column and therefore no value for the unique field which will not allow null by definition.
How can I maintain a unique field to act as primary key in my data when
I want to add (and delete) data that doesn't have this field.
I tried adding the uniqueidentifier field but this gives error message.
The only work round is to delete the unigue field altogether and then add the new data and afterwards create a new unique field. At 600000 + lines of data, this is time and memory consuming
Any help appreciated,Thanks, Keith