Do I Need To Verify That NewID() Returns A Unique GUID?
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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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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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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May 13, 2004
Dear SQL,
I need to SELECT something from a database that has a UNIQUEIDENTIFIER (GUID) field,
If the number is wrong (has some other than A-Z 0-9) than the ASP page just freaks out and gets "error converting from a character string to uniqueidentifier"
How can I check that the GUID is OK before I SELECT ?
this is the number format:
{7A9B5F81-4936-4A31-B4E2-9168AAB75A0}
I tried to cast this "error" number with no successs:
"WHERE Deceased_ID = cast('"& "---------4936-4A31-B4E2-9168AAB75A0" &"' as uniqueidentifier)"
Thanks in advance, Yovav.
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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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Jul 20, 2005
Greetings All, I have read many upon many articles here regarding GUIDdata types and uniqueness. There have been many opinions regardingthe effectiveness of GUID's and when they should/should not be used.However, every article strongly implies, if it does not state itoutright, that GUID's are always unique. My question is this, whathappens if you have a database that uses GUID's and the NIC is changedout on the box? From what I understand the MAC address of the NIC isused as part of the algorithm to generate a GUID. If you change outthe NIC after generating 1 billion GUID's do you run the chance ofgenerating a duplicate GUID?I look forward to your insightfulness on this issue.Regards, Louis.
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May 8, 2006
Let's say that I have a database with 2 tables named 'TableA' and 'TableB'. Each one of those two tables contains the two fields 'MyKey' and 'MyData'. The field 'MyKey' has the type 'uniqueidentifier' and its default value is 'getnewid()'.
Now I would like to consider a third table named 'TableC' with two fields 'KeyRef' and 'MetaData'. The type of 'KeyRef' is 'uniqueidenfier' and corresponds to an element of either 'TableA' or 'TableB'.
If the GUID identifiers are trully unique then there is no issue to proceed that way (I am not consering perf matters here). On the contrary, if GUID are not unique, then there is a collision possibility.
My question is simply: can I consider the GUID to be unique in MS SQL Server (2000 or 2005).
Thanks in advance,
Joannès
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May 1, 2006
In Access, newID returns a unique for the table. In SQL Server, newid()returns a GUID - unique in the world. I do not need or desire thatcomplexity. Is there a way to get a simple unique int on the table inSQL Server?Brad Eckhttp://www.sitesdynamic.comhttp://www.basketsetcetera.com*** Sent via Developersdex http://www.developersdex.com ***
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Feb 9, 2005
Function GUID() As String
GUID = System.GUID.NewGuid().ToString()
End Function
GUID is always 36 characters, for example:
1737be72-fe96-4c3c-b455-3730b049bef9
What the best way to store this in a MS SQL database? I'm thinking of using a fixed length string (char). Is there a better way than to just store this 36 character field?
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Dec 11, 2007
I've googled everything about GUID, seems there is no good thing to say about it. Here's my scenario, a purchase order (PO) application:
We want to have a centralized database with remote sites connected to it
Some of the sites are without connection, they will have their own servers with scheduled replication to the centralized database.
The design is something like this:
Each PO will have many revisions
Each revision will have many PO line items
Each PO line item will have many Delivery Schedules
In the past i used int IDENTITY as transaction ID in revision and line item tables.
transaction ID in revision table is FK to line item table, and transaction ID line item table is FK to Delivery Schedules table.
This work well in standalone database.
Now that we need to merge replicates, int IDENTITY produced in remote DB will conflict with IDENTITY produced in central DB.
I'm thinking of using GUID to replace int IDENTITY.
Question:
How bad is my decision?
Can't GUID size indexing problem be solved with partitioning?
Can you suggest other alternatives to GUID, based on the above scenario?
Thanks in advance
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Aug 21, 2007
Here's a problem description I read on another post but I have the same issue:
I am trying to Import Data from a csv file into a SQL Sever table. The Data being imported has a Unique Identifier in it but it is being considered as DT_WSTR datatype in SSIS
When i directly try to import, it gives an error:
The conversion returned status value 2 and status text "The value could not be converted because of a potential loss of data.".
I Tried to use Data Conversion to convert it to DT_GUID and import into SQL Server table but it again throws the above error.
Anyone has a clue?
Thanks!
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Oct 25, 2004
We are running the following query, which has a unique index on Table_2 (col1 and sys1), and Column col1 from Table_1 is unique.
select top 100 s.*, x.col1
from Table_1 s
left outer join Table_2 x
on x.col1 = s.col1 and x.sys1 = 'SYSTEM0'
Unfortunately this query returns duplicate rows. And every time the result is different
But once we dbcc dbreindex the unique index on Table_2, the result will not have any dups.
Any ideas?
Thanks
Steve
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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 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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Mar 4, 2008
How do I update the OrderGUID column in Table B with Values from OrderGUID column in Table A. I have already populated the OrderGUID column in Table A using NEWSEQUENTIALID(). Now I need to populate the OrderGUID column in Table B with Matching GUID values from the OrderGUID Column in Table A.
Does any one have a script to accomplish this task. thanks
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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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Jul 23, 2005
Grrr!I'm trying to run a script:print 'Declaring cursor'declare cInv cursor forward_only static forselectdistinctinv.company,inv.contact,inv.address1,inv.city,inv.state,inv.postalcode,inv.cmcompanyidfromdedupe.dbo.ln_invoice as invleft joindedupe.dbo.customerid as cidondbo.fnCleanString(inv.company) = cid.searchcowhere((inv.customerid is nulland cid.searchco is null)and (inv.date >= '01/01/2003' or (inv.date < '01/01/2003' andinv.outstanding > 0.01))and not inv.company is null)print 'Cursor declared'declare@contact varchar(75),@company varchar(50),@address1 varchar(75),@city varchar(30),@state varchar(20),@zip varchar(10),@cmcompanyid varchar(32),@iCount int,@FetchString varchar(512)open cInvprint 'cursor opened'fetch cInv into@company,@contact,@address1,@city,@state,@zip,@cmc ompanyidprint 'Cursor fetched @@Cursor_rows = ' + cast(@@cursor_rows asvarchar(5))All the prints are there to help me figure out what's going on!When I get to the Print 'Cursor fetched @@cursor_rows....the value is 0 and the script skips down to the close and deallocate.BUT, if I just highlight the Select...When section, I get over 2,000rows. What am I missing?Thanks.
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