NewID(), UniqueIdentifier Is It Unique Across Different SQL Servers?
Apr 23, 2001
I have an application being developed using SQL server.
The data is captured at various remote areas and the
SQL servers are not physically connected to each other.
Periodically either through a replication / backup process
i plan to update the data from various servers into a central
database.
Can i use the NewID() function to generate a unique ID which
i can use as a primary key that would not be duplicated
across all these servers?
if not Please suggest a solution to maintain the uniqueness
of the transaction.
thanks in advance
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Oct 26, 2007
I'm migrating a web based system to SQL server. I'm planning on using the SQL server function NewID() to create unique keys for many of my records in many different tables. I'm just wondering if NewID() is guaranteed to return a value that does not already exist in my database. I mean obviously once you have a certain number of records (a hell of a lot) you'd be breaking the odds to never come up with a duplicate. Do I need to make sure the result of NEWID() doesn't already exist?Thanks
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Jul 20, 2005
Greetings,I have 3 servers all running SQL Server 2000 - 8.00.818. Lets callthem parent, child1, and child 2.On parent, I create a view called item as follows:CREATE view Item asselect * from child1.dbchild1.dbo.Item union allselect * from child2.DBChild2.dbo.ItemOn child1 and child2, I have a table "item" with a column named "id"datatype uniqueidentifier (and many other columns). There is anon-clustered index created over column "id".When I connect to the parent server and select from the viewSelect id, col1, col2, …. From item where id =‘280A33E0-5B61-4194-B242-0E184C46BB59'The query is distributed to the children "correctly" (meaning itexecutes entirely (including the where clause) on the children serverand one row is returned to the parent).However, when I select based on a list of idsSelect id, col1, col2, …. From item where id in(‘280A33E0-5B61-4194-B242-0E184C46BB59',‘376FA839-B48A-4599-BC67-25C6820FE105')the plan shows that the entire contents of both children item tables(millions of rows each) are pulled from the children to the parent,and THEN the where criteria is applied.Oddly enough, if I put the list of id's I want into a temp tableselect * from #bv1id------------------------------------280A33E0-5B61-4194-B242-0E184C46BB59376FA839-B48A-4599-BC67-25C6820FE105and thenSelect id, col1, col2, …. From item where id in (select * from #bv1)the query executes with the where criteria applied on the childrendatabases saving millions of rows being copied back to the parentserver.So, I have a hack that works (using the temp table) for this case, butI really don't understand the root cause. After reading online books,in a way I am confused why ANY of the processing is done on thechildren servers. I quote:================================================Remote Query ExecutionSQL Server attempts to delegate as much of the evaluation of adistributed query to the SQL Command Provider as possible. An SQLquery that accesses only the remote tables stored in the provider'sdata source is extracted from the original distributed query andexecuted against the provider. This reduces the number of rowsreturned from the provider and allows the provider to use its indexesin evaluating the query.Considerations that affect how much of the original distributed querygets delegated to the SQL Command Provider include:•The dialect level supported by the SQL Command ProviderSQL Server delegates operations only if they are supported by thespecific dialect level. The dialect levels from highest to lowest are:SQL Server, SQL-92 Entry level, ODBC core, and Jet. The higher thedialect level, the more operations SQL Server can delegate to theprovider.Note The SQL Server dialect level is used when the providercorresponds to a SQL Server linked server.Each dialect level is a superset of the lower levels. Therefore, if anoperation is delegated to a particular level, then Queries involvingthe following are never delegated to a provider and are always it isalso delegated to all higher levels.evaluated locally:•bit•uniqueidentifier================================================This suggests to me that any query having where criteria applied to adatatype uniqueidentifier will have the where criteria applied AFTERdata is returned from the linked server.Any ideas on the root problem, and a better solution to get the queryand all the where criteria applied on the remoted linked server?Thanks,Bernie
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Apr 9, 2007
Dear Folks,
can you please tell me, how many newid's can be generated by an sql server instance? and the newid generated by one instance can possibly be generated by another instance ? please give me brief regarding this
thank you very much
Vinod
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Nov 23, 2005
Is there a limitation of using:set @sessionID = NEWID()would there be a simular NEWID() being generated if used in a databaseapplication.Eugene Anthony*** Sent via Developersdex http://www.developersdex.com ***
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Mar 1, 2007
Hello,
I use VB.Net and SQL CE 2.0. I'd like to start using UniqueIdentifier fields as my primary keys.
I saw that this would return a NewID value
System.Guid.NewGuid().ToString()
however, it is not supported in Compact Framework. So how can one obtain the next NewId()?
Thank you.
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Jul 10, 2006
when you use newid() is that a new uniqueidentifier for the database or for the table???I have a changelog that captures newly created users first and gives them a newid, then i want to approve that change and copy the newid generated for that user into the user table. Will I run into duplicate id's that way???
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Jul 7, 2006
Excuse my ignorance because I don't do advance db related programming,but have no other choice at the moment. My experience is limited tosimple queries.I need to have the following query display the recordset in random orderbased on RecordID (unique key) if possible. I tried the ORDER BY NewID()at the end and it generated an error (ORDER BY items must appear in theselect list if SELECT DISTINCT is specified.) I guess because of the subquery. I would also like for the recordset to display a different 10records on each hit to the page, not just the same 10 records in randomorder. I wasn't sure if the SELECT commands I have in place aresufficient for this task.Thanks in advance for any assistance.SELECT DISTINCTTOP 10 dbo.ShowcaseRides.RecordID,dbo.ShowcaseRides.CustomerID, dbo.ShowcaseRides.PhotoLibID,dbo.ShowcaseRides.Year,dbo.ShowcaseRides.MakeShowcase,dbo.ShowcaseRides.ModelShowcase, dbo.ShowcaseRides.VehicleTitle,dbo.ShowcaseRides.NickName,dbo.ShowcaseRides.SiteURL,dbo.ShowcaseRides.ShowcaseRating, dbo.ShowcaseRides.ShowcaseRatingImage,dbo.ShowcaseRides.ReviewDate,dbo.ShowcaseRides.Home,dbo.ShowcaseRides.EntryDate, dbo.Customers.UserName,dbo.Customers.ShipCity, dbo.Customers.ShipRegion,dbo.Customers.ShipPostalCode,dbo.Customers.ShipCountry, dbo.Customers.LastName,dbo.Customers.FirstName, dbo.Customers.MemberSince,dbo.ShowcaseRides.Live,dbo.ShowcaseRides.MemberLive, dbo.Accessories.Make,dbo.Accessories.Model, Photos.PathFROM dbo.ShowcaseRides INNER JOINdbo.Customers ON dbo.ShowcaseRides.CustomerID =dbo.Customers.CustomerID INNER JOINdbo.Accessories ON dbo.ShowcaseRides.MakeShowcase= dbo.Accessories.MakeShowcase ANDdbo.ShowcaseRides.ModelShowcase =dbo.Accessories.ModelShowcase INNER JOIN(SELECT MIN(dbo.ShowcasePhotos.PhotoPath)AS Path, RecordIDFROM dbo.ShowcasePhotosGROUP BY RecordID) Photos ONdbo.ShowcaseRides.RecordID = Photos.RecordID INNER JOINdbo.ShowcasePhotos ON Photos.Path =dbo.ShowcasePhotos.PhotoPathWHERE (dbo.ShowcaseRides.MemberLive = 1) AND (dbo.ShowcaseRides.Live= 1) AND (dbo.ShowcaseRides.MakeShowcase = @MMColParam)ORDER BY dbo.ShowcaseRides.EntryDate DESCRegards,Darin L. MillerParadyse Development~-~-~-~-~-~-~-~-~-~-~-~-~-~-"Some things are true whether you believe them or not." - Nicolas Cagein City of Angels
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Apr 28, 2008
Hi,
Why am I getting a different numbers of distinct ids in those queries?
USE AdventureWorks
go
Declare @myXml as xml
set @myXml = '
<lol>omg</lol>
<lol>rofl</lol>
';
select locations.*, T.c.value('.','nvarchar(max)') from
(
select newid() as Id
from Production.ProductModel
where ProductModelID in (7, 8)
) as locations cross apply @myXml.nodes('(/lol)') T(c);
select mytable.* , T.c.value('.','nvarchar(max)') from
(
select newid() as Id
union
select newid()
) as mytable cross apply @myXml.nodes('(/lol)') T(c);
Thanks,
Victor
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Apr 23, 2006
hi guys
cant find the prob, please help
ALTER TABLE [dbo].[tblUserDetails]
ALTER COLUMN [UserDetailRowGUID] [uniqueidentifier] set default newid()
go
error:Incorrect syntax near the keyword 'default'.
cm
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Apr 28, 2008
I've been trying to figure out why these two return a different amount of distinct ids...
Is that a bug in optimization?
Code Snippet
USE AdventureWorks
go
Declare @myXml as xml
set @myXml = '
<lol>omg</lol>
<lol>rofl</lol>
';
WITH locations as
(
select newid() as Id
from Production.ProductModel
where ProductModelID in (7, 8)
)
select locations.*, T.c.value('.','nvarchar(max)') from locations cross apply @myXml.nodes('(/lol)') T(c);
with mytable as
(
select newid() as Id
union
select newid()
)
select mytable.* , T.c.value('.','nvarchar(max)') from mytable cross apply @myXml.nodes('(/lol)') T(c);
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Sep 30, 2006
I have a view which at the moment has no unique identifier on each record. When I try adding a column definition to the view such as NEWID() as TransactionId, the view then cannot 1) be selected into a temporary table, or 2) queried on other columns in the table. In either case I end up with an empty result set.
I believe I have a way around this for my purpose, which was principally testability. However, can anyone enlighten me as to how and why this happens?
Andrew Raymond
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May 26, 2008
I have 2 tables, Artists and Artworks.
I have a query:
SELECT TOP (4) dbo.Artists.ArtistID, dbo.Artists.FirstName + ' ' + dbo.Artists.LastName AS FullName, dbo.Artworks.ArtworkName, dbo.Artworks.Image
FROM dbo.Artists INNER JOIN
dbo.Artworks ON dbo.Artists.ArtistID = dbo.Artworks.ArtistID
ORDER BY NEWID()
This query returns random images, but the artists are sometimes repeated.
I would like to have DISTINCT Random Artists returned, each with a random image. I tried various subqueries, but I just get error messages.
Any help would be appreciated.
Thnks,
Paolo
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Jul 20, 2005
Is it possible to use NEWID() as a parameter to a stored procedure inSQL Server 2000. I keep getting a "Line 1: Incorrect syntax near ')'"error.ALTER PROCEDURE dbo.StoredProcedure1(@x uniqueidentifier)AS/* SET NOCOUNT ON */RETURNStoredProcedure1 NEWID()go"Line 1: Incorrect syntax near ')'"Thanks in advance
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Apr 3, 2008
Hello.So the scenario is a little complicated.I am joining two tables.Table 1 is derived; it has one row; it has a column based from newid()Table 2 joins to table 1 and reuses the newid() value from table 1 in table 2's rowsBecause there is only one row in Table 1, the value of newid() REPEATS in Table 2The bug is that the NewId() value from Table1 is REGENERATED with every Table 2 record.I created a blog about this because it takes a code sample to demonstrate:http://jerrytech.blogspot.com/2008/04/sql-2005-tsql-bug-with-newid-in-derived.html
Have a nice day;
Jerry
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Mar 3, 2007
Hi There,
I'm having a problem retreiving the auto generated Guid after inserting anew record with NEWID(), my stored proc is as follows:SET @uiTransactionID = NEWID()
INSERT INTO Transactions (uiTransactionID) VALUES (@uiTransactionID)
IF @@ERROR = 0 AND @@ROWCOUNT = 1
BEGIN
SELECT @uiTransactionID AS '@@GUID'
RETURN 0
END
And the return on my insert statement is:
command.ExecuteNonQuery();m_uiTransactionID = (Guid)command.Parameters["RETURN_VALUE"].Value;
I can never retreive the newly generated Guid, can onyone spot where i'm going wrong?
Many thanks
Ben
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Mar 27, 2007
Hi,What I am trying to do is to get the new ID for every record is inserted into a table. I have a For...Each statement that does the loop and using the sqldatasource to so the insert. <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ myConnectionString%>">
<InsertParameters>
<asp:Parameter Name="NewID" Type="int16" Direction="output" />
</InsertParameters>
</asp:SqlDataSource> Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim sqlSelect As String
Session("Waste_Profile_Num") = 2
Session("Waste_Profile_Num2") = 5
sqlSelect = "SELECT Range, Concentration, Component_ID FROM Component_Profile WHERE (Waste_Profile_Num = " & Session("Waste_Profile_Num").ToString() & ")"
SqlDataSource1.SelectCommand = sqlSelect
Dim dv As Data.DataView = CType(SqlDataSource1.Select(DataSourceSelectArguments.Empty), Data.DataView)
For Each dr As Data.DataRow In dv.Table.Rows
sqlSelect = "INSERT INTO Component_Profile (Waste_Profile_Num, Range, Concentration, Component_ID) "
sqlSelect &= "VALUES (" & Session("Waste_Profile_Num2").ToString() & ", @Range, @Concentration, @Component_ID); SELECT @NewID = @@Identity"
SqlDataSource1.InsertCommand = sqlSelect
'SqlDataSource1.InsertParameters.Add("Waste_Profile_Num", Session("Waste_Profile_Num2").ToString())
SqlDataSource1.InsertParameters.Add("Range", dr("Range").ToString())
SqlDataSource1.InsertParameters.Add("Concentration", dr("Concentration").ToString())
SqlDataSource1.InsertParameters.Add("Component_ID", dr("Component_ID").ToString())
SqlDataSource1.Insert()
SqlDataSource1.InsertParameters.Clear()
MsgBox(Session("NewID").ToString())
Next
End Sub
Protected Sub SqlDataSource1_Inserted(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.SqlDataSourceStatusEventArgs) Handles SqlDataSource1.Inserted
Session("NewID") = e.Command.Parameters("@NewID").Value.ToString
End Sub What I have done so far is to display the new id and I am going to use that return id later. However, the first time through the loop, I am able to get the new id but not the second time. So, I wonder, how do I every single new id each time the INSERT statement is executed?STAN
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Apr 23, 2008
I currently have a table called stores. I've just added a uniqueidentifier column called store_guid to the stores table. The table currently has about 500 records in it and now i'm trying to set each store_guid = to a newid(). I've tried using UPDATE stores SET store_guid = newid() . however, that doesn't work because i think it's trying to set each record equal to the same guid using that approach. All i need to do is fill in my new column with new guids. any ideas?
Thanks in advance,
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Jun 11, 2007
I'm trying to use the NEWID function in dynamic SQL and get an errormessage Incorrect syntax near the keyword 'ORDER'. Looks like I can'tdo an insert with an Order by clause.Here's the code:SELECT @SQLString = N'INSERT INTO TMP_UR_Randoms(Admit_DOCID,Client_ID, SelectDate, SelectType,RecordChosen)'SELECT @SQLString = @SQLString + N'(SELECT TOP ' + @RequFilesST + 'Admit_DOCID, Client_ID, SelectDate, SelectType, RecordChosen FROMFD__UR_Randoms 'SELECT @SQLString = @SQLString + N'WHERE SelectType = ' +@CodeRevTypeSt + ' AND SelectDate = ''' + @TodaySt + '''' + ' ORDERBY NEWID())'execute sp_executesql @SQLStringMy goal is to get a random percentage of records.The full SP follows. In a nutshell - I pull a set of records fromFD__Restart_Prog_Admit into a temporary table called FD__UR_Randoms.I need to retain the set of all records that COULD be eligible forselection. Based on the count of those records, I calculate how manyneed to be pulled - and then need to mark those records as "chosen".I'd just as soon not use the TMP_UR_Randoms table - I went that routebecause I ran into trouble with a #Tmp table in the above SQL.Can anyone help with this? Thanks in advance.Full SQL:CREATE PROCEDURE TP_rURRandomReview @ReviewType varchar(30)--Review type will fill using Crystal Parameter (setting defaults)AS/* 6.06.2007UR Requirements:(1) Initial 4-6 month review: 15% of eligible admissions(eligible via days in program and not yet discharged) must be reviewed4-6 months after admission. This review will be done monthly -meaning we'll have a moving target of names (with overlaps) whichcould be pulled from each month. (Minimum 5 records)(2) Subsequent 6-12 month review: Out of those already reviewed(in #1), we must review 25% of them (minimum of 5 records)(3) Initial 6-12 month review: Exclude any included in 1 or 2 -review 25% of admissions in program from 6-12 months (minimum 5)*/DECLARE @CodeRevType intDECLARE @PriorRec int -- number of records already markedeligible (in case user hits button more than once on same day for sametype of review)DECLARE @CurrRec int --number of eligible admitsDECLARE @RequFiles intDECLARE @SQLString nvarchar(1000)DECLARE @RequFilesSt varchar(100)DECLARE @CodeRevTypeSt char(1)DECLARE @TodayNotime datetimeDECLARE @TodaySt varchar(10)--strip the time off todaySELECT @TodayNotime = DateAdd(day,datediff(day,0,GetDate()),0)--convert the review type to a codeSelect @CodeRevType = Case @ReviewType when 'Initial 4 - 6 Month' then1 when 'Initial 6 - 12 Month' then 2 when 'Subsequent 6 - 12 month'then 3 END--FD__UR_Randoms always gets filled when this is run (unless it waspreviously run)--Check to see if the review was already pulled for this recordSELECT @PriorRec = (Select Count(*) FROM FD__UR_Randoms whereSelectType = @CodeRevType and SelectDate = @TodayNotime)If @PriorRec 0 GOTO ENDThis--************************************STEP A: Populate FD__UR_Randomstable with records that are candidates for review************************If @CodeRevType = 1BEGININSERT INTO FD__UR_Randoms (Admit_DOCID, Client_ID, SelectDate,SelectType,RecordChosen)(SELECT pa.OP__DOCID, pa.Client_ID,Convert(varchar(10),GetDate(),101) as SelectDate, @CodeRevType, 'F'FROM dbo.FD__RESTART_PROG_ADMIT paInner join FD__Client cOn pa.Client_ID = c.Client_IDWHERE Left(c.Fullname,2) <'TT' AND (Date_Discharge IS NULL)AND(DATEDIFF(d, Date_Admission, GETDATE()) 119)AND (DATEDIFF(d, Date_Admission, GETDATE()) <= 211)AND pa.OP__DOCID not in (Select Admit_DOCID from FD__UR_Randomswhere RecordChosen = 'T'))ENDIf @CodeRevType = 2--only want those that were selected in a batch 1 - in program 6-12months; selected for first reviewBEGININSERT INTO FD__UR_Randoms (Admit_DOCID, Client_ID, SelectDate,SelectType,RecordChosen)(SELECT pa.OP__DOCID, pa.Client_ID,Convert(varchar(10),GetDate(),101) as SelectDate, @CodeRevType, 'F'FROM dbo.FD__RESTART_PROG_ADMIT paInner join FD__Client cOn pa.Client_ID = c.Client_IDWHERE Left(c.Fullname,2) <'TT' AND (Date_Discharge IS NULL)AND(DATEDIFF(d, Date_Admission, GETDATE()) 211)AND (DATEDIFF(d, Date_Admission, GETDATE()) < 364)AND pa.OP__DOCID in (Select Admit_DOCID from FD__UR_Randomswhere SelectType = 1 AND RecordChosen= 'T'))ENDIf @CodeRevType = 3--only want those that were not in batch 1 or 2 - in program 6 to 12monthsBEGININSERT INTO FD__UR_Randoms (Admit_DOCID, Client_ID, SelectDate,SelectType,RecordChosen)(SELECT pa.OP__DOCID, pa.Client_ID,Convert(varchar(10),GetDate(),101) as SelectDate, @CodeRevType, 'F'FROM dbo.FD__RESTART_PROG_ADMIT paInner join FD__Client cOn pa.Client_ID = c.Client_IDWHERE Left(c.Fullname,2) <'TT' AND (Date_Discharge IS NULL)AND(DATEDIFF(d, Date_Admission, GETDATE()) 211)AND (DATEDIFF(d, Date_Admission, GETDATE()) < 364)AND pa.OP__DOCID NOT in (Select Admit_DOCID from FD__UR_Randomswhere SelectType < 3 AND RecordChosen= 'T'))ENDSELECT @CurrRec = (Select Count(*) FROM FD__UR_Randoms whereSelectType = @CodeRevType and SelectDate = @TodayNoTime)--*************************************STEP B Pick the necessarypercentage **************************************--if code type = 1, 15% otherwise 25%If @CodeRevType = 1BEGINSELECT @RequFiles = (@CurrRec * .15)ENDELSEBEGINSELECT @RequFiles = (@CurrRec * .25)END--make sure we have at least 5If @RequFiles < 5BEGINSELECT @RequFiles = 5End--*************************************STEP C Randomly select thatmany files**************************************--convert all variables to stringsSELECT @RequFilesSt = Convert(Varchar(100),@RequFiles)SELECT @CodeRevTypeSt = Convert(Char(1),@CodeRevType)SELECT @TodaySt = Convert(VarChar(10),@TodayNoTime,101)SELECT @SQLString = N'INSERT INTO TMP_UR_Randoms(Admit_DOCID,Client_ID, SelectDate, SelectType,RecordChosen)'SELECT @SQLString = @SQLString + N'(SELECT TOP ' + @RequFilesST + 'Admit_DOCID, Client_ID, SelectDate, SelectType, RecordChosen FROMFD__UR_Randoms 'SELECT @SQLString = @SQLString + N'WHERE SelectType = ' +@CodeRevTypeSt + ' AND SelectDate = ''' + @TodaySt + '''' + ' ORDERBY NEWID())'print @SQLStringexecute sp_executesql @SQLStringSELECT * FROM TMP_UR_Randoms/*--This select statement gives me what i want but I need to somehowmark these records and/or move this subset into the temp tableSelect Top @RequFilesFROM FD__UR_RandomsWHERE SelectType = @CodeRevType and SelectDate =Convert(varchar(10),GetDate(),101))ORDER BY NewID()*/ENDTHIS:GO
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Jan 10, 2006
Hello,
In my table, i've a GUID column type. I insert a new record with NewID() function in Sql request.
Is it possible to retreive the GUID column of this new record (without requerying the table) ?
I'm using EVC, Sql Mobile 3.0 and OLE DB interface.
Thanks in advance.
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Jul 5, 2015
This index is not unique
ix_report_history_creative_id
Msg 2601, Level 14, State 1, Procedure DFP_report_load, Line 161
Cannot insert duplicate key row in object 'dbo.DFP_Reports_History' with unique index 'ix_report_history_creative_id'.
The duplicate key value is (40736326382, 1, 2015-07-03, 67618862, 355324).
Msg 3621, Level 0, State 0, Procedure DFP_report_load, Line 161
The statement has been terminated.
Exception in Task: Cannot insert duplicate key row in object 'dbo.DFP_Reports_History' with unique index 'ix_report_history_creative_id'. The duplicate key value is (40736326382, 1, 2015-07-03, 67618862, 355324).
The statement has been terminated.
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Sep 22, 2004
A UNIQUE INDEX must inherently impose a unique constraint and a UNIQUE CONSTRAINT is most likely implemented via a UNIQUE INDEX. So what is the difference? When you create in Enterprise Manager you must select one or the other.
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Jul 20, 2005
HelloWhat should I use for better perfomance sinceunique constraint always use index ?ThanksKamil
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Jun 24, 2006
What's the difference in the effect of the followings:
CREATE UNIQUE NONCLUSTERED INDEX
and
ALTER TABLE dbo.titles ADD CONSTRAINT
titleind UNIQUE NONCLUSTERED
I found there're two settings in Indexs/Keys dialog box of the management studio, Is Unique, and Type. The DDL statements above are generated by setting Is Unique to yes plus Type to Index, and just Type to Unique Key, respectively. What's the difference between them?
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Nov 21, 2007
I have a report that was designed using SQL Reporting Services that sits on a SQL reporting server. It's nothing too exciting, it is essentially a three page application with legal jumbo on pages 2 and 3 and applicant data in fields on page 1.
We use rectangles to force page breaks to page 2 and to page 3.
When running the report on the report server, it shows and prints fine.
When running the report from the QA website internally, it shows and prints just fine.
When running the report from the production website from a machine internally, it shows and prints just fine.
When running the report from outside of the company network, the report is jacked. It obliterates large chunks of text, crams text together, and creates blank pages.
I need help in determining where I even begin with trouble shooting this!
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Aug 21, 2001
can anyone tell me if they know of a way to automate the update process from development servers to live server, with little interference from an administrator
I have a development team that are constantly updating their databases along with their ASP code, and want to publish changes an a weekly basis. They have asked me for a way to take their new structures, tables, procedures etc, and copy them to the live servers, but NOT to interfere with existing customer data.
Funny I know – and I hate the idea btw :(
Any references, contacts, 3rd party tool recommendations welcome,
Thanx,
Darren
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Sep 27, 2007
I am in the middle of a major migraton project, moving from x86 SQL 2000 to IA64 SQL 2005. I have a business need to link to several legacy servers. I have a number of problems I am trying to solve.
1) Linking a Kerberos server to a non-Kerberos server.
2) Linking x64 or IA64 servers to x86 servers.
3) Linking SQL 2005 to SQL 2000.
Two of the errors I am encountering are:
------------------------------
TCP Provider: An existing connection was forcibly closed by the remote host.
Login failed for user '(null)'. Reason: Not associated with a trusted SQL Server connection.
OLE DB provider "SQLNCLI" for linked server "SCDC250DB" returned message "Communication link failure".
(Microsoft SQL Server, Error: 10054)
------------------------------
And
------------------------------
The OLE DB provider "SQLNCLI" for the linked server "SCDC250DB" reported an error. Authentication failed.
Cannot initialize the data source object of OLE DB provider "SQLNCLI" for linked server "SCDC250DB".
OLE DB provider "SQLCLI" for linked server "SCDC250DB" returned message "Invalid authorization specification".
(Microsoft SQL Server, Error: 7399)
If someone has worked through these problems before, I would appreciate it if you could direct me to the relevant documentation to resolve these issues.
Thanks!
Brandon Forest
Database Administrator
Data & Web Services Team
Sutter Connect Information Technologyforesb@sutterhealth.org
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Mar 7, 2001
Hi everyone,
I need urgent help to resolve this issue...
As far as the performance goes which one is better..
Unique Index(col1, col2) OR Unique constraint(col1, col2) ?
Unique constraint automatically adds a unique index
and unique index takes care of uniqueness then whats the use of unique constraint ?
Which one do one use ?
thanks
sonali
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Jan 20, 2006
BOL says a unique constraint is preferred over a unique index. It also states that a unique constraint creates a unique index. What then is the difference between the two, and why is a constraint preferred over the index?
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Mar 26, 2008
hi team,
.Can i create umique constraint with out unique index.when i am creating a unique constraint sql creates a unique index (default) can i have only unique constraint ?
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Mar 12, 2008
I am having a problem trying to figure out the best way to get the results I need. I have a table of part numbers that is joined with a table of notes. The table of notes is specific to the part number and user. A row in the notes table is only created if the user has entered notes on that part number. I need to create a search that grabs all matches on a keyword and returns the records. The problem is that it currently returns a row from the parts table with no notes and a separate row with the notes included if they had created an entry. It seems like this should be easy but it eludes me today.
Here is the code
Code Snippet
create procedure SearchPartKeyword
(
@Keyword varchar(250) = null,
@Universal_Id varchar(10) = null
)
as
select p.PartNumber, p.Description, p.ServiceOrderable, n.MyNotes, p.LargestAssembly, p.DMM,
p.Legacy, p.Folder, p.Printer
from Parts p inner join notes n on p.PartNumber = n.Identifier
where n.Universal_ID = @Universal_ID and p.Description like @Keyword
union
select p.PartNumber, p.Description, p.ServiceOrderable, '' as MyNotes, p.LargestAssembly,
p.DMM, p.Legacy, p.Folder, p.Printer
from Parts p
where p.Description like @Keyword
and the results:
PartNo Description SO Notes LA DMM Legacy Folder Printer
de90008 MAIN BOARD 1 DGF1 114688 0 0 0
de90008 MAIN BOARD 1 I love this part Really I do DGF1 114688 0 0 0
This could return multiple part numbers and If they have entered notes I want the row with the notes
Thank You
Dominic Mancl
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Nov 13, 2007
What 's difference between Unique key and unique index in SQL server 2005?
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Apr 10, 2006
I am really struggling. I am trying to query a sql database table using a uniqueidentifier.
Public Class SalesDataClass
Public Function getAccountNumber(ByVal ID As String) As String
Dim accountnumber As String = "0"
'Try
Using connection As New SqlConnection(ConfigurationManager.ConnectionStrings("InterhealthCRM_MSCRMConnectionString").ConnectionString)
Using command As New SqlCommand("getAccountNumber", connection)
command.CommandType = CommandType.StoredProcedure
Dim parameterdat1 As New SqlParameter("@accountid", SqlDbType.UniqueIdentifier)
parameterdat1.Value = ID
command.Parameters.Add(parameterdat1)
Dim parameterdat2 As New SqlParameter("@accountnum", SqlDbType.NVarChar, 20, ParameterDirection.Output)
command.Parameters.Add(parameterdat2)
connection.Open()
command.ExecuteNonQuery()
accountnumber = parameterdat2.Value
Return accountnumber
End Using
End Using
'Catch ex As SqlException
' Catch ex As InvalidOperationException
' Catch ex As Exception
' You might want to pass these errors
' back out to the caller.
' End Try
End Function
End Class
Can someone help me correct my code.
Sproc:
ALTER PROCEDURE [dbo].[getAccountNumber]
-- Add the parameters for the stored procedure here
@accountId uniqueidentifier,
@accountnum nvarchar(20) output
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
-- Insert statements for procedure here
SELECT accountNumber from accountbase where accountid = @accountid
return @accountnum
END
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