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How To Prevent Displaying All Names Of Databases?


I get an issue, that is: Once i expand databases from SQL Enterprise Manager, it takes a long time to wait displaying all names of databases. How should i do to prevent displaying all names of databases?




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How To Prevent Displaying Names Of DB?
I get an issue, that is: Once i expand databases from SQL Enterprise Manager, it takes a long time to wait displaying all names of databases. How should i do to prevent displaying all names of databases?

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Is It Possible To Prevent Databases From Being Copied?
Hi,

We have a point of sale application (C# .NET 2.0) and a Sql Server 2005 database back end.

Our customers are concerned that employees could create a backup of the SQL Server database (or even of the MDF file) and use it to steel customer data.

Very often, the application is running on a single PC in a shop using Sql Server Express Edition 2005 under Windows XP. The users usually log on as local administrator. It's hard for us to force our customers to change their local security policies.

Ideally, I would like some form of security mechanism that prevents a backup from being restored on to another PC without either a password or some other form of authentication.

Is this possible?

Regards,

 

Sigol.

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Replication Monitor Bug - Subscription Names Suddenly Not Displaying?
This is strange.

 

We use Merge (pull) replication to get data from the "mother ship" updated to the laptops of 15 sales reps before they head out into the field, where they work disconnected. At end of day, they all reconnect and all the data is once again shared.

 

We've been having problems with the replication, but that's another topic.

 

This morning, I logged onto the server to check the replication monitor, and found that all of the subscriber names for that particular subscription are blank! They show the open/close bracket ( [] ) followed by the database name. This is under the My Publishers >> [server name] >> [publication name] node in the explorer tree. If I try to double-click on one of the subscribers to get their detail, I get tne message, "Replication Monitor could not open the Detail Window." and "Specified cast is not valid".

 

If I look at the publication in SQL Server Management Studio, all of the subscriber names show up just fine. But they do NOT show up under Replication Monitor.

 

No one touched the database over the weekend, and this was working just fine on Friday afternoon.

 

Has anyone seen this before? What to do?

 

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How To Prevent Domain Admin Users From Accessing SQL 2000 Databases?
Based on our database infrastructure, we need to secure our SQL databases. The security issue concerns on allowing a limited number of Domain Admin users to access the SQL databases.
We tried certain ways, based on the documents in the Microsoft web site, but we couldn€™t reach to the point of preventing the Domain Admin users accessing the SQL databases.
 
Thanks in advance.
 

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Displaying All Databases And Tables Made In SQL Server 7
Please tell me how can I display all the databases I have made in the SQL Server 7 and their respective tables. Is there a query for that? I need to display all the databases made in SQL SERVER and their tables on a form made in Visual Basic.

Please reply to the following email urgently
saad_19@yahoo.com
Please help me. Thankyou :)

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How To Get Names Of All Databases Using Sql Statements?
How can i get names of all databases using sql statements or system stored procedures? Thanks in advance!

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Using Qualified Names Of Databases
I have databases a1 , a2 , a3 , a4 ... an.
Each has a table t1 .

I am writing a stored proc which compares the t1 table between any given two databases.
I want to pass the database name as a variable ..
so the SPROC looks like

exec sp_comparetable 'a3' , 'a7'

My question is , inside the SPROC ,how do I refer to the tables in the a3 and a7 databases.


Thanks,
Alok.

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Return All Databases Names Using Query?
Hi, I am trying to get all the databases from MS SQL into a dropdownlist. However, I am not sure how to do that in query ... is there a way to retrieve all databases name using  a query in MS SQL? Thanks.

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How To Get The List Of Names Of The Databases Of A Server Using OleDbConnection In C#.......?
I want to get the names of the databases of the server using OleDbConnection in c# which i have to add in to a combobox.....the same task i achieved using SqlConnection where in there is a Class SqlClientCollectionNames...the code is as followsusing (SqlConnection connection =new SqlConnection("Data Source=server;User ID=username;Password=passwd")) {                connection.Open();                DataTable myData = connection.GetSchema(SqlClientMetaDataCollectionNames.Databases);                foreach (DataRow row in myData.Rows)                   comboBox1.Items.Add(row[0]);               connection.Close();}   but the same i did for OleDbConnection it is not working using (OleDbConnection connection =new OleDbConnection("Provider=SQLOLEDB;Data Source=server;User ID=username;Password=passwd"))
 {
                connection.Open();
                DataTable myData = connection.GetSchema(SqlClientMetaDataCollectionNames.Databases);//no such method Databases  present in OleDb namespace
                               foreach (DataRow row in myData.Rows)
                   comboBox1.Items.Add(row[0]);
               connection.Close();
}    is there any other way to do this using OleDbConnection........??Please help 

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Are Duplicate Instance Names A Problem If Physical Server Names Are Different?
If I restore the master database from ServerA to ServerB and start the SQL Server services on ServerA and ServerB, the master databases will be identical and running sp_helpserver and @@ServerName will indicate the SQL Server instance for both instances is ServerA.  Is this ok considering the physical server names are different? 
 
If this is ok, how does SQL Server advertise on the network who it is?  Does it append the physical server name to the SQL Server instance name during network communications?
 
Thanks,    Dave

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Determine Table Names And Column Names At Runtime?
Hi

I was wondering if anyone has an idea of how we could find the table names and column names of the tables in our Sql server database at runtime/dynamically given our connection string? Please let me know.

Thanks.

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DB Mirroring: Different Server Names With Same Instance Names
I'm going to be setting up DB mirroring between two SQL Server 2005 boxes. Since these are on two different servers, can the instance names be the same? Is there any reason NOT to do so if the mirror server is going to be used exclusively for DB mirroring?
 
For example: if the my primary DB is located on SERVER1INSTANCE1, can the mirror be SERVER2INSTANCE1 or do the instance names have to be different even though they're on different boxes.
 
Thanks!

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Table Names And Field Names
I'm trying to do an update query that looks like this:

UPDATE

PAEMPLOYEE

SET PAEMPLOYEE.LOCAT_CODE = EMPLOYEE.PROCESS_LEVEL


FROM

PAEMPLOYEE A

JOIN EMPLOYEE B ON A.EMPLOYEE = B.EMPLOYEE

It's erroring out on the Employee prefix B.EMPLOYEE saying:

..."does not match with a table name or alias name used in the query"


Is it wrong or will it cause problems to have a field name the same as the table name?

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Server Names Or Instance Names
Hello there.  I'm trying to populate a drop down box with a list of all available instances of SQL server (express or not) available on a network.  To list all instances I'm using EnumAvailableServers() in SmoApplication. 

The issue is that the Instance column in the returned data table is always empty, and both the Name and the Server columns contain the same string -- the name of the computer the SQL server is installed.  Locally I have SSE installed, the instance name is <computer_name>SQLEXPRESS, however, using Smo I can't seem to get to the either full instance name or just the instance name.  I can't assume SQLEXPRESS, since there may be more than one installed. 

Alternately I used EnumRegisteredServers() in SmoApplication.SqlServerRegistrations and that, while returning instance information (can be retrieved from the RegisteredServer in the returned collection), doesn't always return the remote SQL servers in the list. 

Any idea how can this be done?  Maybe I'm going at it the wrong way, maybe there's another class / method I need to use to retrieve all instances? 

Thank you

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Looping Through Stored Procedure Inside Another Stored Procedure And Displaying The Category And Then Displaying 1 Item In Each Category
I used to do this with classic asp but I'm not sure how to do it with .net.Basically I would take a table of Categories, Then I would loop through those.  Within each loop I would call another stored procedure to get each item in that Category. I'll try to explain, Lets say category 2 has a player Reggie Bush and a player Drew Brees, and category 5 has Michael Vick, but the other categories have no items.Just for an example.. Category Table: ID   Category1      Saints2      Falcons3      Bucaneers4      Chargers5      FalconsPlayer Table:ID    CategoryID   Player                 News                                Player Last Updated1            1           Reggie Bush       Poetry in motion                                9/21/20062            1           Drew Brees         What shoulder injury?                        9/18/20063            5           Michael Vick       Break a leg, seriously.                       9/20/2006 Basically I would need to display on a page:SaintsReggie BushPoetry in MotionFalconsMichael VickBreak a leg, seriously.So that the Drew Brees update doesnt display, only the Reggie Bush one, which is the latest.I have my stored procedures put together to do this.  I just don't know how to loop through and display it on a page.  Right now I have two datareaders in the code behind but ideally something like this, I would think the code  would go on the page itself, around the html.

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SQL Injection - How To Prevent It?
I am building my first ASP.Net app from scratch and while working on the DAL I came across the problem of SQL Injection. I searched on the web and read different articles but I am still unsure about the answer. My question is should I add
 
db.AddInParameter(dbCommand, "AvatarImageID", DbType.Int32, avatarImageID);
 
Add in Parameters to my C# code to avoid SQL Injection. What is the best practice. I am unclear if the stored procedure already helps me avoid SQl Injection or if I need the add in parameters in the C# methods to make it work. I need some help. Thanks, Newbie
 
My C# update method in the DAL (still working on the code)
 
private static bool Update(AvatarImageInfo avatarImage)
        {
            //Invoke a SQL command and return true if the update was successful.
            db.ExecuteNonQuery("syl_AvatarImageUpdate",
                avatarImage.AvatarImageID,
                avatarImage.DateAdded,
                avatarImage.ImageName,
                avatarImage.ImagePath,
                avatarImage.IsApproved);
 
            return true;
        }
 
 
I am using stored procedures to access the data in the database.
 
My update stored proc
 
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
GO
 
ALTER PROCEDURE [dbo].[syl_AvatarImageUpdate]
      @AvatarImageID          int, 
      @DateAdded              datetime,  
      @ImageName              nvarchar(64),    
      @ImagePath              nvarchar(64),    
      @IsApproved             bit
AS
BEGIN
      -- SET NOCOUNT ON added to prevent extra result sets from
      -- interfering with SELECT statements.
      SET NOCOUNT ON;
      BEGIN TRY
            UPDATE      [syl_AvatarImages]
            SET
                        [DateAdded]       = @DateAdded,
                        [ImageName]       = @ImageName,
                        [ImagePath]       = @ImagePath,
                        [IsApproved]      = @IsApproved
            WHERE [AvatarImageID] = @AvatarImageID
            RETURN
      END TRY
      BEGIN CATCH
            --Execute LogError SP  
            EXECUTE [dbo].[syl_LogError];
            --Being in a Catch Block indicates failure.
            --Force RETURN to -1 for consistency (other return values are generated, such as -6).
            RETURN -1
      END CATCH
END

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Prevent SP Compilation
Hi,I'm using SQL Server 2000 MSDE on a laptop running Windows XP.I have a couple of SP's that that quite some time to compile. So I waswondering: is there any way to have the database *not* recompile them everytime after a reboot?BOL says: "As a database is changed by such actions as adding indexes orchanging data in indexed columns, the original query plans used to accessits tables should be optimized again by recompiling them. This optimizationhappens automatically the first time a stored procedure is run afterMicrosoft® SQL ServerT 2000 is restarted."Now the SQL Server is restarted a lot, because laptops don't have endlessbatteries <g>Cheers,Bas

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Prevent Sql Job Failure.
Have a job that calls a DTS package, DTS is an Export & Import wizard to copy tables. Someone deleted a table from source and my job failed last night. Inputs appreaciated.

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How To Prevent Db Deletion
Hi

I want to try and protect myself from my own stupidity. I have a number of sql databases, but one is LIVE. It is easy to drop tables but I want to set something (e.g. a password) which will help prevent me from dropping tables on the live database.

Any help/direction here would be appreciated.

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Best Way To Prevent Deadlocks
I'm going thru my application log, and just seeing what errors are popping up. I have a relatively intense search feature, thats causing alot of deadlocks.

Exception type: SqlException
Exception message: Transaction (Process ID 105) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.

In general, what's the best way to resolve this ?

Should I see if I can apply "WITH (NOLOCK)" to my data ?

Any suggestions are greatly appreciated !


thanks again!
mike123

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Prevent Duplicate Insert
How can I prevent duplicate inserts or entries to a table?
Thank you.
Note: I am using SQL Server and coding ASP.net pages in VB.

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Prevent Duplication On UPDATE
Hello
I noticed a spelling mistake in the data in a column of several tables, I used the following syntax to alter the spelling:
UPDATE [dbo].[Prod_Cat]     SET  [ProdName]=N'merseyside'    WHERE ProdName = 'mmserseyside'
The above code correctly updated the spelling error, but it also inserted a new row with the corrected data. 
So I found myself with two Identical rows containing the corrected information. I had to manually delete the extra row. Because if I had put in a DELETE statement, I would have then lost both rows.
What do I need to do to prevent this happening next time.  As I find that I need to update the names of some products, but I don't want to duplicate them.
Thanks
Lynn

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How Do I: Prevent Race Condition?
I want to be able to read and update a value in the database without entering a race condition.
For example:
User #1 reads a row from the database, changes a value then writes the value back.
User #2 reads the same row AFTER user #1 has read it, but BEFORE user #1 writes it back. User #2 then changes the value and writes it back, overwriting the value that user #1 wrote.
I thought I could do this with transactions, but it just makes user #2 wait until user #1 is done writing before user #2 can write. It doesn't stop user #2 from reading while user #1 has it out.
Does that make sense?

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I have a web form that I use to insert data into a sql database. I want to know how to prevent inserting duplicate records into the database. Thanks.

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How To Prevent SQL Injection Attacks
Hi,

On my site I have a simple textbox which is a keyword search, people type a keyword and then that looks in 3 colums of an SQL database and returns any matches

The code is basic i.e. SELECT * FROM Table WHERE Column1 LIKE %searcg%

There is no validation of what goes into the text box and I am worried about SQL injection, what can I do to minimize the risk

I have just tried the site and put in two single quotes as the search term, this crashed the script so I know I am vunerable.

Can anyone help, perhaps point me in the direction of furthur resources on the subject?

Thanks

Ben

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What Are Sql Injection Attacks And How To Prevent?
this is a question I put in the sql community in microsoft, but havent be answered in full

------------

I am using dynamic sql to do a query with differents 'order' sentences and/or 'where' sentences depending on a variable I pass to the sp

ex:

create proc ex
@orden varchar(100)
@criterio varchar(100)

as
declare consulta varchar(4000)

set consulta=N'select pais from paises where '+@criterio' order by '+@orden

------------

I'd like to know it it uses 2 sp in the cache, as I read, the main sp and the query inside the variable of the dynamic sql. if so, as I imagine, then I suppose I have to do the main sp without any 'if' sentence to be the same sp, and so taking it from the cache and not recompile the sp

now, I have various 'if' sentences in the main sp (the caller of the dynamic sql) but I plan to remove them and do the 'if' by program -it is in asp.net-, so I suppose it is better because in this way the main sp is took from the cache, supposing this uses the cache different that the dynamic sql in the variable

what do u think? does the dynamic sql use 2 caches? if so, u think it is better to try to do the main sp same in all uses (no 'if' statements)?


-----

They told me this coding is not good (dynamic sql) because it can give control to the user?

I ask, how does it give control to use? what ar sql injection attack and how to prevent them?

I use dynamis sql because I have 150 queries to do, and thought dynamic sql is good

is it true that dynamic sql have to be recompiled in each execution? I suppose so only if the sql variable is different, right?

can u help me?

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Prevent DELETE And/or UPDATE
Hi all!Are there any other way than using rights or Triggers to prevent aDELETE or an UPDATE on a specific column.The "problem" with rights is that they dont apply to all DB-usersThe "problem" with triggers is that they generate lots of extraSQL-codeI would like a solution something like below. If there are anyprimitives like this or other more neat solutions I would be glad toknowCREATE TABLE some_table NO DELETE/* ^^^^^^^^^*/(some_column SOME_TYPE NO UPDATE/* ^^^^^^^^^*/)For clarity, here is a trigger that currently solves the problemCREATE TRIGGER check_updateable_columns ON some_tableFOR UPDATEASIF UPDATE(some_column)RAISERROR(...)GOorCREATE TRIGGER delete_not_allowed ON some_tableINSTEAD OF DELETEASRAISERROR(...)GO

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Prevent One Single Row From Being Updated
I am doing customization for microsoft POS. I manually added a recordto a table. The manage and maintenance of this table are done by POS,and user can update the contents of this table. Is there any way I canlock this single row at database level to prevent it from being deletedor changed by user? I am using SQL 2000 and vb.net.Thanks.Leanne

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Prevent Trigger From Firing
Hi,

I have an update tigger on one of my tables.
I want to fire an Update SQL but somehow prevent trigger from firing.

Any Ideas..

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Trigger To Prevent Duplicates
Hi all,

I'm writing a trigger to prevent duplicates. I know that this can be done through primary key or unique constraints but in the real world my uniqueness is defined by 8 columns which is too a big an index to maintain on the primary / unique key.

If I create a table with 2 columns

CREATE TABLE Table1
(CentreCHAR(10),
Month CHAR(3)
)


Then create a trigger to prevent duplicates

CREATE TRIGGER trigger_Check_Duplicates
ON Table1
FOR INSERT, UPDATE
AS
-- This trigger has been created to check that duplicate rows are not inserted into AudioVisual table.
DECLARE @IsDuplicate INTEGER
-- Check if row exists
SELECT @IsDuplicate = 1
FROM Inserted i, Table1 t
WHERE t.Centre = i.Centre
AND t.Month = i.Month
IF (@IsDuplicate = 1)
-- Display Error and then Rollback transaction
BEGIN
RAISERROR ('This row already exists in the table', 16, 1)
ROLLBACK TRANSACTION
END

Then insert a row into the new table (no other data is in there)

INSERT Table1
VALUES('0691040176','AUG')

I get the Trigger error message that the row already exists. Why is this the case? I though that Table 1 (target table) would show no entries as it has no data - it should be a before image of the table and the inserted table should be an after image.


Please help!!!


Thanks

Neill

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Prevent ODBC By USER/APP
Is there a way to monitor all ODBC connections to a MSSQL server and prevent a username/ODBC combination. My problem is that we have many frontends for viewing reports, but we managed them all and users are not allow to make their own connections. Some users now uses MSAccess over ODBC to draw their own reports - they have all the permissions as neededd by the other apps.

thanx

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How To Prevent Doublicate Name Entry
hi I have a table I need to have a process which prevent a user from entering a name value( company Name ) in a field. how can I do that .

Ahmed

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Prevent SQL/CLR Auto Deploy
Hi,
 
I have a solution (VS 2005, C#) that includes a SQL 2005 CLR project.
 
When I run the solution (in debug mode, and with a test harness in a different project in the solution set as the startup project) the IDE often wants to deploy my CRL assembly.
 
How do I tell it NOT to try to do the deployment?
 
(i.e. to only do it when I right-click the project and tell it to).
 
Cheers,

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Is That Possible To Prevent Modifying The Name Of An IDTSInputColumn90?
Hi,

I'm building a custom SSIS data flow component and I create myself input and output columns from a custom property of my pipeline component. That's why I don't want the user to modify the name of the input and output columns by using the advanced editor.

Is there a way either to make input/output column properties - at least the name - readonly or to override any PipelineComponent method to throw an exception like we do when we want to prevent the user from adding/removing input/output colulmns with methods like PipelineComponent.DeleteOutputColumn?

Thanks for your help,

David

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Prevent Data Being Inserted Twice
I have a table with 3 columns: ID, Status, DateTime.

I created a stored procedure to insert a staus value for each ID. This will run every hour. The DateTime stores the time, date when the Status was inserted.

If the procedure was to be run a second time in hour window I do not want any Status to be inserted.

Note: that I cannot rely on the procedure being run at exactly the right time - if it was scheduled to run on the hour (i.e at 1:00, 2:00, 3 :00 etc) but didn't run until 1:20 it sould still be able to run at 2:00.

Does anyone know if there is anyway I can gaurd against this?

 

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Prevent MS Access To Connect
Hello
 
I'm facing a dilemma. I have quite a lot of users who need read access to data for analysis purposes. By granting them read access you also give them the option to connect to the database using MS Access which puts locks on the data.
 
First I thought of generating stored procedures for all tables within a database those users need to query but when users execute a stored procedure with the name of the table, they get a resultset of all the data. They cannot filter the data by for example using select top 100* from usp_table where name like '%worf%'
 
I'm sure I'm not the only one here but I don't see any alternative then grant them those rights.
 
Thanks!
Best Regards,
Worf

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How To Prevent A Distributed Transaction?
I have a stored proc that performs some validations and returns a result set.  I catch the result set in a calling procedure as follows:
 
declare @tblErr (ErrType varchar(20), ErrMsg varchar(255))
insert @tblErr (ErrType, ErrMsg)
    exec dbo.spMyProc ...(args)
 
Within the def of spMyProc there is a cross-server call:
 
create procedure dbo.spMyProc (...params...)

as
begin

declare @tblErr (ErrType varchar(20), ErrMsg varchar(255))

...(do checking, inserts to @tblErr)...
 
-- check other server
exec @n = otherserver.mydb.dbo.spCheck ...(args)
if @n != 0
    insert @tblErr values ('someerr', 'somemsg')
...etc.
select ErrType, ErrMsg from @tblErr
end

 
Apparently, the implicit transaction of the outer Insert statement is causing a distributed transaction to be started.  There is no 'begin tran', distributed or non, and the foreign sp has no data-modifying statements.  The call to spMyProc, if done from a query window, works fine, returning the desired resultset.  When called from the outer proc, the call fails because the servers are not configured for distributed transactions.  When performed without the cross-server call, using a copy of the remote db attached to the local server, the outer proc works fine.
 
I do not want a distributed transaction.  How can I prevent one?  The local server is 2005 Standard on Server 2003, and the linked server is SQL2000 on Windows 2000 Server.

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Prevent Email Authentication
Due to the 'interesting' set up of AD, email etc we are unable to send reports as attachments.

It would appear that it is trying to authenticate the user to see if they have permission to view the report, as though they were viewing it in real time.

Is there any way to override this behaviour?

If not then all we can do is email them a link to the report, which sort of defeats the object.

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How To Prevent Ordering Of Records....
hello,

i use VC# and sql server 2005.

i create a table using the following command :

create table history(name varchar(20) primary key);

I insert records in a particular order.After all the records are inserted and when I try to retrieve the records, all of them are sorted in a ascending order.Is there any way to prevent them from being sorted.

pls reply asap.....

- Sweety

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How Can I Prevent That All Data Can Be Seen With Notepad?
Hello,

is there a way to say to SQL Server to make the data not readable?

Regards
Markus

 

 

 

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How To Prevent My Co-Workers From Accessing My SQL
Hi all

In our office we have simple Network (LAN) and for some reason in each workgroup Computer in this network we have installed SQL-Server 2000.

So far everything was ok but recently i noticed that my co-workers can easily access my Sql Server Instance through their Enterprise manager installed on their computers and then they can open my tables,view...and manipulate other objects.

for better illustration i have created a Flash Movie from this process , please check the following Link :

http://www.Parsisoftco.com/movie/Sql/Sql.htm

How can i prevent others from doing so?
Any help greatly Appreciated.
Kind Regards.

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Prevent From Copying Database ?
Hi,

How can prevent from stoping sql-server sevice and copying database,
note user has a access right to pc/server.

Kind Regards,
sasan.

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How Can I Get All Server Names And Catalogs Names For Specific Server
 

hii all,can any one help me to get this information.
 
i am using sql server 2000 and i want to know:
 
1- all names of servers
 
2- all database names (catalogs) at specific server and only which the user created . 
 
3- user name and password for each server.
 
 
thanks.

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How Can I Prevent My Co-Workers From Accessing My SQL Instance..
Hi all
In our office we have simple Network (LAN) and for some reason in each workgroup Computer in this network we have installed SQL-Server 2000.
So far everything was ok but recently i noticed that my co-workers can easily access my Sql Server Instance through their Enterprise manager installed on their computers and then they can open my tables,view...and manipulate other objects.
for better illustration i have created a Flash Movie from this process , please check the following Link :
 http://www.Parsisoftco.com/movie/Sql/Sql.htm
How can i prevent others from doing so?
Any help greatly Appreciated.
Kind Regards.

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How To Prevent A Second Entry Being Inserted With Primary Key Value? (C#)
Ok, this is a really stupid question, but I can't seem to find an answer I understand. In my SQL database I have a a table called MasterSkillList, to which the user can write by using a little web form with a text box and a drop down list. The table has 2 fields, Skill and Attribute. Skill is the primary key, as no skill can appear twice. What I want to do is prevent just that, I don't want people to enter the same skill more than once. So how do I tell the user that the entry allready exists in the database?
 My C#  Code is as follows:1 protected void btnSubmit_Click(object sender, EventArgs e)
2 {
3 srcAddSkill.InsertParameters["Skill"].DefaultValue = txtSkillName.Text;
4 srcAddSkill.InsertParameters["Attribute"].DefaultValue = ddlAbility.SelectedValue;
5 try
6 {
7 srcAddSkill.Insert();
8 lblErrorMessage.Text = "The skill '" + txtSkillName.Text + "' has been added. It is based on a character's " + ddlAbility.SelectedItem + " score.";
9 lblErrorMessage.Visible = true;
10 txtSkillName.Text = "";
11 }
12 catch (Exception ex)
13 {
14 lblErrorMessage.Text = "An exception has occurred. " + ex.Message;
15 lblErrorMessage.Visible = true;
16 }
 

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How Can I Prevent From Inserting Duplicate Data?
 
I have a table storing only 2 FKs, let's say PID, MID
Is there any way that I can check distinct data before row is added to this table?
For example, current data is
PID MID------------100 2001100 2005101 3002102 1009102 7523102 2449
If my query is about to insert PID 100, MID 2001, since it's existing data, i don't want to add it. Can I use trigger to solve this issue?
 
Thanks.  
 
 

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Prevent Duplicate Entries In A Table
I have an ASP.Net Web appplication with a Back-End SQL DB. There are 3 Tables; Users, Groups, and GroupMember.

The GroupMember table is used to link Users to Groups and consists of just two fields; userID and GroupID.

Here is a sample of some data:

User1 Group1
User1 Group2
User2 Group2
User3 Group1
User3 Group3

Users can belong to multiple Groups. However, you shouldn't be able to have the same user and group comobination more than once. for example:

User1 Group1
User2 Group2
User1 Group1

I can stop this kind of duplicate data entry by doing a lookup first (using asp.net) to see if the entry already exists but this seems cumbersome.

Is there a simpler way to prevent duplicate entries in a table using sql?

Thanks a lot,

Chris

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What Type Of Constraint To Prevent Duplicates
I am trying to either write a trigger or a check constraint to preventduplicates in my table. There are two columns I need to look at for theduplicates and only one combo value for both columns is allowed in thetable. For e.g.Column Serial can have only one '123456' value with testresult value as'PASS'. This serial can be in the table many times with any other comboso for e.g.The table could contain 100 entries for serial column value '123456'with testresult value 'FAIL', 'PENDING' etc.** TESTED SCHEMA BELOW **-- create tableCREATE TABLE bstresult(ID int IDENTITY (1, 1) NOT NULL ,serial char (10) NULL ,testresult char (10) NULL)-- Insert valid valuesinsert into bstresult values ('123456','PASS')insert into bstresult values ('123456','FAIL')insert into bstresult values ('123456','FAIL')insert into bstresult values ('123456','PENDING')-- insert invalid value this should failinsert into bstresult values ('123456','PASS')If I simply create a unique constraint on both columns it will notallow the FAIL combo or PENDING combo with the same serial which I needto allow.Appreciate your help.

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DTS Package - How To Prevent A 0 Byte File?
I've created a DTS package -- that uses a query to export to a .txt file. My question is -- if the results of this query are zero (no results returned within the package ) -- how can I tell the package not to export a zero byte file. Any thoughts on that? Any help you could give would be greatly appreciated. Thanks!

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How To Prevent Doublicate Entry To A Table
hi, If I have a table which contains customer names. I want to have some kind of process to validate any new insert record into the customer table. so if the inserted new customer already exist in the table I will get a message that say " Sorry , this customer name is already in the system " .... how can I do that,

I am using sql server 2000. thanks

Ali

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How To Prevent Connection To Db Directly Through ODBC
How to prevent connection to db directly through ODBC without using application role?


could it be done for standard user and domain user ?

Thank you

Alex

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