What Is The Purpose Of The ROWGUIDCOL Property?
Dec 4, 2007
Greetings,
What is the point of Microsoft defining a ROWGUIDCOL property that can
be attached to a 'uniqueidentifier' column? This is defined as a column
that is 'globally unique', but doesn't the uniqueidentifier datatype
already guarantee that? To make matters more confusing, they tell you
in Books Online to add a Unique constraint because ROWGUIDCOL does not
guarantee uniqueness...so what's the point?
Apparently the only functionality attached to this property is that only
one such column can exist per table and that it can be queried using the
$ROWGUIDCOL keyword in SQL.
Can anyone tell me the rationale for when to use this and when not to,
or what the purpose of this property is?
Thanks,
Sam Bendayan
DB Architect
Ultimate Software
Join Bytes!
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Feb 3, 2004
How would I get the value of a ROWGUID column of the row I just inserted? (like using @@identity for an identity column.)
Thanks!
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Aug 20, 1999
Is there a way to get the last ROWGUIDCOL entered into a table? I don't believe that doing a SELECT MAX will work, and we really need a way to do this. Does anyone have a nifty way to do this?
TIA...
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Apr 25, 2008
I've run into the following problem using "select rowguidcol from [LinkedServer].[DBName].dbo.MyTable" (as opposed to using "select <rowguid column name>...".
Against a locally-connected database, the following SQL command works as expected:
SELECT rowguidcol from dbo.MyTable
However, If I run the same query against a linked server (using the 4-part notation), it fails with an 'Invalid column name 'rowguidcol'' error:
SELECT rowguidcol from [LinkedServer].[MyDB].dbo.MyTable
Msg 207, Level 16, State 1, Line 1
Invalid column name 'rowguidcol'.
I've searched around but can't seem to find any info that tells me definitively that I can't use rowguidcol against linked tables, so I'm wondering if I'm just doing something wrong?
Any ideas on how to get around this issue would be greatly appreciated. I really don't want to use actual column names, as this is for generated scripts.
More Info:
> I can select the data just fine from the linked server if I use the column name - so I don't think it's a configuration or permissions issue.
> The row I'm trying to view is, in fact, a rowguidcol. I used the exact same script to create the table on both the local (where select rowguidcol works) and the linked (where it doesn't) servers.
> Both servers are MS SQL 2005 Standard with SP2
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Jun 16, 2006
I am having problems exporting data into a flat file using specific code page. My application has a variable "User::CodePage" that stores code page value (936, 950, 1252, etc) based on the data source. This variable is assigned to the CodePage property of desitnation file connection using Property expression.
But, when I execute the package, the CodePage property of the Destination file connection defaults to the initial value that was set for "User:CodePage" variable in design mode. I checked the value within the variable during runtime and it changes correctly for each data source. But, the property of the destinatin file connection doesn't change and results in an error.
[Flat File Destination [473]] Error: Data conversion failed. The data conversion for column "Column01" returned status value 4 and status text "Text was truncated or one or more characters had no match in the target code page.".
[DTS.Pipeline] Error: The ProcessInput method on component "Flat File Destination" (473) failed with error code 0xC02020A0. The identified component returned an error from the ProcessInput method. The error is specific to the component, but the error is fatal and will cause the Data Flow task to stop running.
If I manually update the variable with correct code page and re-run the ETL, everything works fine. Just that it doesn't work during run-time mode.
Can someone please help me resolve this.
Thanks much.
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Apr 17, 2008
Hi,
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Thanks for any hints.
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May 7, 2008
Untill recently I had a smooth running SSIS package,but suddenly it throws error syaing
"OnError,,,,,,,The result of the expression
"@[User:trTextFileImpDirectory] +"SomeTextStringHere"+ @[User:trANTTextFileName] +(DT_STR,30,1252) @[User:taging_Date_Key]+ "SomeTextStringHere"
" on property "ConnectionString" cannot be written to the property. The expression was evaluated, but cannot be set on the property."
I have child SSIS package running under a parent package (through execute package task)
I have few flat file connection managers in child package for text file import , in which I am building text file path dynamically at run time by assigning an expression in connection string property of connection manager.
The Expression is as follows
"@[User:trTextFileImpDirectory] +"SomeTextStringHere."+ @[User:trANTTextFileName] +(DT_STR,30,1252) @[User:taging_Date_Key]+ +"SomeTextStringHere"
Where @[User:trTextFileImpDirectory] is a variable which contains path of directory containg text
files.Value in this variable is assigned at runtime from parent package's variable,which in turns fetch
value from a configuration file on local server.
With my current configuration this path has been configured to some other server's directory over network ( I.e my package picks text files from some other servers folder over network)
While
"Some string here"+ @[User:trANTTextFileName]" part of file name string.
(DT_STR,30,1252) @[User:taging_Date_Key] Contain the date of processing ,value in this variable is also picked up at run time from parent package variable.
1) So can someone give me some insight into possible reason of failures.
2) Is it possible that problem arises if directory (from which I m picking text files) is assigned password or is there exist some problem in accessing forlders over network ?
3) Or there can be some problem in package configuration at design time( I.e where I m assigning value in variable from parent package vriables)?
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LoginConn.Open()
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Oct 30, 2007
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My probelm here is,is there any conditions to be cecked before using ROW type?Can't we use MULTISET instead of ROW type alone?
Please help me out by ansereing this.
Thanks
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Jul 23, 2005
What is the purpose of the "N" preceding the parameter values in theSQL examples?Here is an example copied from Books Online, SP_ATTACH_DB:EXEC sp_attach_db @dbname = N'pubs',@filename1 = N'c:Program FilesMicrosoft SQLServerMSSQLDatapubs.mdf',@filename2 = N'c:Program FilesMicrosoft SQLServerMSSQLDatapubs_log.ldf'I've found that my sp_attach_db routine works without the "N", but Ineed to know what it is that I don't know.Thank you everybody for all your help.
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Nov 16, 2006
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Apr 11, 2008
I understand that I can do this is SQL Server:
CREATE TABLE dbo.test1 (
Col1 int IDENTITY,
ColGUID uniqueidentifier rowguidcol NOT NULL CONSTRAINT DF_test1_ColGUID DEFAULT NEWSEQUENTIALID()
)
INSERT INTO dbo.test1 DEFAULT VALUES
SELECT rowguidcol FROM dbo.test1
SELECT ColGUID FROM dbo.test1
I get this result:
ColGUID
------------------------------------
ED2D1EF0-0408-DD11-A8EB-001AA0D389DB
ColGUID
------------------------------------
ED2D1EF0-0408-DD11-A8EB-001AA0D389DB
Here's the question: Is there any performance difference between using the actual column name and "rowguidcol"?
I would like to be able to script a trigger that uses the rowguidcol column. If I could use rowguidcol instead of the actual column name, I would not have to hard-code the column name in the trigger.
Thanks,
Rob
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Apr 28, 2007
Hello,
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// This is the Many to One section
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(
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Scope
(
Leaves([Date]) ,
Except
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{
[Reporting Currency].[Destination Currency Code].[Destination Currency Code].[USD],
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)
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- SB.
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-- updates record with sql user and timestamp
--created 11-28-00 tim cronin
DECLARE @muser varchar(35),
@rec_lock_status int,
@ptacpt_status int
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begin
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from deleted dt
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GO
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Mar 28, 2008
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Please advise.. Thanks in advance.
Here is my code:
USE pubs
DECLARE @TABLE_NAME sysname
DECLARE @AUDIT_TABLE VARCHAR(50)
SELECT @TABLE_NAME= MIN(TABLE_NAME) FROM INFORMATION_SCHEMA.TABLES
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AND TABLE_NAME NOT LIKE 'audit%'
AND TABLE_NAME!= 'sysdiagrams'
AND TABLE_NAME!= 'Audit'
AND TABLE_NAME = 'sales'
WHILE @TABLE_NAME IS NOT NULL
BEGIN
SELECT @TABLE_NAME= MIN(TABLE_NAME) FROM INFORMATION_SCHEMA.Tables
WHERE TABLE_NAME> @TABLE_NAME
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FROM @TABLE_NAME
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AND TABLE_TYPE= 'BASE TABLE'
AND TABLE_NAME!= 'sysdiagrams'
AND TABLE_NAME!= 'Audit'
AND TABLE_NAME NOT LIKE 'audit%'
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Thanks. ..
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Jan 29, 2007
Hi All
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Regards
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SQL Server 2005 Express License allow hosting for business purpose, as DB size is limited to 4 GB?
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