SQL Server 2005 Keep Alive Behavior
Nov 2, 2007
We are having some problems with the SQL Server 2005 Keep Alive mechanism causing dropped connections. The Keep Alive time and interval appear to work as documented. However the number of retries made before dropping the connection seems to be variable. When running Network Monitor I have seen this vary between 3 and 9 retries. The value for TcpMaxDataRetransmissions in the registry is set to 5. Does anyone know what the correct number of retries should be for SQL Server 2005 Keep Alive? Is this dynamically determined or is this a bug?
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May 24, 2006
We tested this new feature ("Keep Alive" for orphant connections to automatically close) with no success - neither the standard properties nor slightly changed properties worked.
We tested like this:
SQL Server 2005 - ADO.NET Client
The client established an explicit lock on one row at one database. Afterwards we disconnected the client by pulling out the network-cable. We waited about 35 sec for the sessios to close - but nothing happend; we waited another minute but nothing changed. SQL Server Management Studio and the command line "netstat" told us that the connections are alive ... so what went wrong?
Did we miss something?
Our goal is, that such "orphant connections" get cleaned up and also their inked locks on the database.
BTW we installed the sp1 before all the tests started!
please help -
.agony
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Sep 26, 2007
hye everyone,
i have problem .
when i deploy the report, its failed and the error mesage :
The underlying connection was closed: A connection that was expected to be kept alive was closed by the server. d:
ptdemoClaimOTReport.rdl
any suggestion or idea
thank in advance
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Aug 15, 2007
We have an interesting problem. We are attempting to migrate from sql 2000 to sql 2005. the schema we have is exactly the same. the new 2005 box is more powerful than our 2000 box.
here is our schema:
tbl_Items
ItemID int pk
ReferenceID int
sessionid varchar(255)
StatusID int
tbl_ItemsStatus
statusid int pk
isinternalstatus bit
there is an index on (ReferenceID, SessionID, StatusID) and (SessionID, StatusID)
this is the query:
DECLARE @referenceid INTEGER
SET @referenceid = 1019
SELECT MAX(i2.itemid)
FROM tbl_Items i2 (NOLOCK)
JOIN tbl_ItemsStatus s (NOLOCK)
ON i2.StatusID = s.StatusID
WHERE
s.IsInternalStatus = 0
AND i2.referenceid = @referenceid
AND i2.sessionid IN (
SELECT i3.sessionid
FROM tbl_Items i3 (NOLOCK)
WHERE
i3.referenceid = @referenceid
AND i3.status <> 7
AND i3.status <> 8
AND i3.status <> 10
AND i3.itemid IN (
SELECT max(i4.itemid)
FROM tbl_Items i4 (NOLOCK)
WHERE i4.referenceid = @referenceid
GROUP BY i4.sessionid
)
AND i3.itemid NOT IN (
SELECT MAX(i7.itemid )
FROM tbl_Items i7 (NOLOCK)
WHERE
i7.referenceid = @referenceid
AND i7.SessionID IN (
SELECT i5.SessionID
FROM tbl_Items i5 (NOLOCK)
WHERE
i5.status <> 11
AND i5.referenceid = @referenceid
AND i5.itemid IN (
SELECT MAX(i6.itemid)
FROM tbl_Items i6 (NOLOCK)
WHERE
i6.referenceid = @referenceid
AND i6.status IN (7,11,8)
GROUP BY i6.sessionid
)
)
GROUP BY i7.SessionID
)
)
GROUP BY i2.sessionid
we know this query is pretty bad and can be optimized. however, if we run this query as is on 2005 it takes about 2 hours to run...if we run the exact same query on 2000 it takes 9 seconds.
so this query on 2005 if run takes 2 hours..however, if we omit the s.IsInternalStatus = 0 or the i2.referenceid = @referenceid line it takes about 9 seconds.
why would this be? it makes no sense why omitting one of those where clauses would increase the performance of the query by 2 hours? we know its a bad query...but this doesnt make sense.
any one else run into this problem?
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Oct 16, 2006
Hi there,
Does anyone know how i can keep an ssis package used for real time reporting alive no matter the amount of errors it gets? So for instance the server im streaming to is shutdown for maintenance, and the connection dies, its needs to just keep re-trying. In other words the maximum error count is infinite. i dont just want to set max err count high, i want it out of the picture all together.
Thanks
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Feb 5, 2008
sql2k5
sp2
We moved a very tiny db (< 100 mb) from 2000 to 2005 (via attach/ detach) recently and now there are a couple sprocs which take forever to run from the app. Yes, the stats have since been updated as I reorg the indexes weekly. Now here is where it gets really strange, I can run this sproc in 0 seconds via Query Analyzer (QA). In other words I:
Have a developer run it from the app while monitoring in Profiler. There is a setting in the app for a 30 timeout, so after 30 seconds the app blows up and I see the exact code that the developer tried to run.
I can grab that code from Profiler, plop it into QA, and run it. Results are returned instantly. We have done this test a number of times, so I know it's not just a one time thing.
How can this be? The only thing that got changed in the app was the connection string to the new 2005 server.
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Jul 18, 2007
Hi there,
We are in the process of upgrading from SQL Server 2000 to 2005. During testing we came across the following situation.
To reproduce the issue you can do the following
Create this structure in a 2000 and 2005 server instances
CREATE TABLE test
(a int,
b varchar(30))
INSERT INTO test
(a, b)
VALUES (1, '2')
INSERT INTO test
(a, b)
VALUES (3, '3a')
INSERT INTO test
(a, b)
VALUES (4, '4')
Then run the following statement in both servers:
UPDATE test
SET a = ltrim(rtrim(b))
WHERE b NOT LIKE '%a%'
AND ltrim(rtrim(b)) <> a
In 2000 this last statement will execute with no problem and it will update one row, whereas in 2005 the following error message is given:
Msg 245, Level 16, State 1, Line 20
Conversion failed when converting the varchar value '3a' to data type int.
By looking at the execution plan it seems that 2005 first tries to evaluate ltrim(rtrim(b)) <> a and then excludes those rows containing a whereas 2000 first excludes those rows containing a and then evaluates the different than condition.
I know fixing this instance itself is easy but I€™m more concerned about having to rewrite many more stored procedures where we find this same scenario; is there any setting that can be changed to avoid this?
Any guidance is much appreciated.
Thanks!
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Aug 7, 2007
What is actually happening when a conversation timer is being used in terms of the dialog_timer column in sys.conversationendpoints? For example, I was using the following query to tell me which conversation timers are currently running:
SELECT * FROM sys.conversation_endpoints
WHERE dialog_timer > '1900-01-01 00:00:00.000'
However, I have noticed that periodically the dialog_timer value goes back to '1900-01-01 00:00:00.000' and the query fails, starting up another timer. Then, the original timer magically appears again, working just fine. So, I changed to this query:
SELECT * FROM sys.conversation_endpoints
WHERE far_service
IN
(
'TimerService1',
'TimerService2',
'TimerService3',
)
But this seems like the long way around and doesn't really indicate that the timer is running or not, just that its present in the sys.conversationendpoints catalog view. What is the proper way to see if timers are running? If one dies for some reason, I need to restart it.
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Jan 23, 2007
Currently, our application is issuing a 'select count(*) from systypes' command to check to see if the database connection is live (has not been reaped by the firewall.) This is somewhat inefficient. Perhaps a less expensive way to implement this functionality is to issue a ping statement to the instance? At least a more simple SQL query is needed.
I'm sure this function is typical in application architecture. What recommendations do you have for confirming that a database connection is alive and viable from the application?
Stephanie
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Oct 30, 2007
On a SQL 2005 Cluster, when you move the SQL resources you generally have to kind of "reauthenticate". For example, in SSMS and after you have moved the SQL cluster resources, you run a query in SSMS and you get a connection failure. Run it again and it works.
Does anyone else notice this? I am assuming it is because the resources are now on a differen't server. But then what's the purpose of the SQL virtual server name and instance? I thought when you authenticate to SQL it's to the virtual SQL server like so... VirtualServerSQLInstance.
Can someone straighten out my poor mangled mind?
I'd like to avoid this reauthentication thing.
Thanks
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Jun 20, 2007
A stored procedure takes an IN parameter, an INOUT parameter, and returns an OUT parameter. When this stored procedure is defined in SQL Server 2000, the JDBC DatabaseMetadata method getProcedureColumns() returns three rows in the resultset:
one for the IN parameter (COLUMN_TYPE=1)
one for the INOUT parameter (COLUMN_TYPE=2), and
one for OUT parameter (COLUMN_TYPE=5).However, when the same stored procedure is defined in SQL Server 2005 (SP2), the getProcedureColumns() method returns only two rows in the resultset:
one for the IN parameter (COLUMN_TYPE=1)
one for the INOUT parameter (COLUMN_TYPE=2).No row for the OUT parameter is returned.
jTDS JDBC driver was used for both of the above tests. When the Microsoft JDBC Driver for 2005 was used against SQL Server 2005, the same behavior (only two rows in the resultset) was observed.
Has someone else run into such a problem? Is this a bug in SQL Server 2005 because the same jTDS driver works as expected against SQL Server 2000 but not against SQL Server 2005? Any feedback will be appreciated.
Thanks,
-- Damodar Periwal
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Feb 19, 2008
Note the code below, running on the version noted.
I just found this today, figured I'd share. Not sure if it's a known bug or a "special" feature. The only difference between the two queries is the 3rd line, everything else is the same. Notice that the sort order changes, yet no errors or warnings are given. I assume that the table aliases are ignored for the order by, unless there are duplicate column names in the results.
I abstracted this from a bug I discovered in one of my apps today, where I have sales reps assigned to their clients with start and end dates. A while back, a developer asked me to format the dates without the time portion, and when I did so, I introduced the problem. I resolved it temporarily by ordering by convert(datetime, startdate) but I found it strange that the column alias match overrides the table alias attempted match in the order by. Another way to get around this would be to change the column aliases, then the sort order would be as desired, but I didn't want to have to change the app code for something so trivial.
My apologies if this is a duplicate.
@@version = Microsoft SQL Server 2005 - 9.00.3054.00 (X64) Mar 23 2007 18:41:50 Copyright (c) 1988-2005 Microsoft Corporation Standard Edition (64-bit) on Windows NT 5.2 (Build 3790: Service Pack 2)
select convert(varchar(10), table_alias.startdate, 101) as startdate,
convert(varchar(10), table_alias.enddate, 101) as enddate
from
(
select convert(datetime, dateadd(mm, -4, getdate()-1)) as startdate, convert(datetime, dateadd(mm, -4, getdate())) as enddate
union
select convert(datetime, dateadd(mm, -3, getdate()-1)) as startdate, convert(datetime, dateadd(mm, -3, getdate())) as enddate
union
select convert(datetime, dateadd(mm, -2, getdate()-1)) as startdate, convert(datetime, dateadd(mm, -2, getdate())) as enddate
union
select convert(datetime, dateadd(mm, -1, getdate()-1)) as startdate, convert(datetime, dateadd(mm, -1, getdate())) as enddate
union
select convert(datetime, getdate()-1) as startdate, convert(datetime, getdate()) as enddate
) as table_alias
order by table_alias.startdate
select convert(varchar(10), table_alias.startdate, 101) as startdate,
convert(varchar(10), table_alias.enddate, 101) as enddate,
table_alias.startdate, table_alias.enddate
from
(
select convert(datetime, dateadd(mm, -4, getdate()-1)) as startdate, convert(datetime, dateadd(mm, -4, getdate())) as enddate
union
select convert(datetime, dateadd(mm, -3, getdate()-1)) as startdate, convert(datetime, dateadd(mm, -3, getdate())) as enddate
union
select convert(datetime, dateadd(mm, -2, getdate()-1)) as startdate, convert(datetime, dateadd(mm, -2, getdate())) as enddate
union
select convert(datetime, dateadd(mm, -1, getdate()-1)) as startdate, convert(datetime, dateadd(mm, -1, getdate())) as enddate
union
select convert(datetime, getdate()-1) as startdate, convert(datetime, getdate()) as enddate
) as table_alias
order by table_alias.startdate
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Jul 19, 2005
Hi,anyone could explain this : I have installed the same asp.net application on 2 distinct hosts, each with its own SQL Server 2000 database.However, in some SQL queries in Stored Procedures, the results do not come out the same.For example, on one server the query "select @value = (select ....)-(select ...)" works and on the other one it returns a null valueAny hint ?Thanks for your helpJohann
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Jun 29, 2007
Hi All,
if someone can point me to documentation on this I would appreciate it.....
If there isn't any....
I am wondering about the behavior of SQL Server for table scans. In other databases tables scans are not really table scans, they are scans of the underlying tablespace for all the rows that are in the table.....and if many tables are placed into the same tablespace then the obvious slowdown occurs as rows are scanned that are not in the table.
This used to be the case in server 7......but is it still the case in 2005 that if the explain says 'table scan' it will in fact scan the filegroup the table is in?
Some other databases also have a map of the row numbers and the table it is in and the optimiser decides whether to scan the data itself or to navigate through the map and fetch a row at a time depending on the stats....
It seems that the grahical explain does not tell me more than 'table scan'. Is there any way to see down to the physical level of what the optimiser is going to do?
Thank You in Advance
Peter
www.peternolan.com
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Dec 2, 2007
Hi Friends,
I am struggling with creating a simple stored procedure, I want to take max(timekey) out in one variable @Val in a dynamic SQL statement as below in SP. When I create this SP, it creates successfully but when I run it I get error
Select @Val=MAX(TimeKey) FROM ABC
Msg 137, Level 15, State 1, Line 1
Must declare the scalar variable "@Val".
Can someone help me in understanding this wierd behavior? And how to get rid of this. Table and SP scripts are as below
CREATE TABLE ABC (TimeKey int, Data_Val int)
CREATE Procedure MAXVal(@Table_Name Varchar(30))
AS
BEGIN
DECLARE @Val INT,
@SQL Varchar(100)
SET @SQL='Select @Val=MAX(TimeKey) FROM '+''+@Table_Name+''
EXECUTE (@SQL)
END
Thanks,
Kul
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Aug 2, 2006
I was able to successfully create a database maintenance plan for SQL Server 2000 Transaction Log Shipping for a few databases a few weeks ago. Yesterday, I created a few more but to my surprise, I can no longer do it. I can create a maintenance plan but the job it creates does not start even if I force the job to start. I did exactly the same thing as what I did (as I document everything I do) before but no luck.
Has anybody had this experience before?
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Oct 1, 2004
I have two SQL Server Instances on two servers. One server is my webserver and database server and the other one is just a database server. i have an application that calls a stored procedure located on the webserver/database server that runs a query on the OTHER database server. I use linked tables in my first instance to make the call possible.
Everything was working just fine for months until the database server was restarted and the IP address was changed. The name of the database is the same however and my first SQL Server instance has no problems running queries on the other databases tables. However, when you try to run the application i get the following error:
Login failed for user 'sa'. Reason: Not associated with a trusted SQL Server connection
I have mixed mode authentication selected and my security uses the security context with username=sa and password=sa.
So here's the weird part.
The application will only run correctly when i manually run a SQL command from my webserver's SQL Analyzer on the linked SQL Server. however, after a few minutes, the same error comes back!! so as a temporary fix, i scheduled a dts job to run a simple query on the linked server every two minutes, so the application keeps working! It's almost as if the webserver's sql server forgot that the linked server is there, and by running a simple query in query analyer, the connection gets refreshed and everythings normal again - for about 3 minutes!
I am completely stumped by whats happeneing and appreciate any help. Thank you.
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Jan 21, 2008
I'm a wee bit of a newbie concerning DTS and have inherited a db with a DTS containing a Copy SQL Server Objects task set to run nightly. Essentially, it does an informal backup of some core data.
Recently, I was notified that one of the tables it copies over is now empty on the Destination db. The DTS shows that it runs successfully with no errors logged, the table in question IS selected to be copied from the Source database, there IS data in the Source database table, and every other table in the Destination database is populated appropriately.
Any ideas on what would cause this one table to be empty without generating any errors?
FYI, running SQL Server 2000.
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Oct 11, 2014
I can't understand why I get 2 different results on running with a Bracket I get 'NULL' and without a bracket I get the declared variable value which is 'Noname'
Below is Query 1:
Declare @testvar char(20)
Set @testvar = 'noname'
Select @testvar= pub_name
FROM publishers
WHERE pub_id= '999'
Select @testvar
Out put of this query is 'Noname'
BUT when I type the same query in the following manner I get Null-------Please note that the only difference between this query below is I used brackets and Select in the Select@testvar statement
Declare @testvar char(20)
Set @testvar = 'noname'
Select @testvar=(Select pub_name
FROM publishers
WHERE pub_id= '999')
Select @testvar
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Feb 6, 2007
This was originally posted on DBForums.com, so here is the link:
http://www.dbforums.com/showthread.php?t=1614086
Since some of the Microsoft staff come around here occasionally, I figured I should at least link to it here. This is the gist of the problem, though. I was asked to come up with a script to create all required data directories in case an emergency was declared, and someone had to rebuild one of our database servers. Most of you are probably thinking of hitting up the sysaltfiles table about now, but this will turn into a cautionary tale. Try it if you dare. The one requirement is that you install the data for SQL Server in a non-standard directory that has a short path (such as C:MSSQL8, instead of the whole C:Program files...).
What I am unclear on is whether this is a problem in the reverse function, the r(l)trim function, or the fixed-width datatype. I have confirmed that transferring the data to a temp table did not eliminate the...oddity.
select filename
from master..sysaltfiles
where dbid = 2
go
select reverse(rtrim(filename)), filename
from sysaltfiles
where dbid = 2
go
select reverse(rtrim(filename))
from sysaltfiles
where dbid = 2
I have also had two independent DBAs confirm this oddity exists, so this should be relatively easy to replicate.
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Aug 29, 2007
I have three tables I am using, aspnet_Users, Stories,
CustomizedStory. Stories and
CustomizedStory are related via a foreign key StoryID. I’ve setup the tables so that when I delete a
Story row it cascade deletes the corresponding row from CustomizedStory.
Each CustomizedStory row has a reference to UserID from aspnet_Users.
Since, I didn’t want to mess with the table definition by adding a cascade
delete option on aspnet_Users, I decide to use a trigger, essentially delete all customized stories and associated stories if a user is deleted:ALTER
TRIGGER [dbo].[DeleteCustomizedStories] ON [dbo].[aspnet_Users] FOR DELETEAS
BEGIN DELETE FROM dbo.Story
WHERE StoryID
= (SELECT StoryID FROM dbo.CustomizedStory WHERE
UserID = (SELECT UserID FROM deleted))END
The problem I am having is that it deletes all of the
CustomizedStory rows as specified by the cascading option, but doesn’t delete
the Story rows. I can’t seem to understand
why this is happening, especially when I
explicitly told it to delete story rows.
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Feb 1, 2008
I've done a new tabel that insert the UserId that in a uniqueidentifier get from Membership.GetUser().ProviderUserKeySo if I want to make a select statement threw storedprocedure in codebehind it runs as it shouldCode behindDim GetCustomersCars As CustomerCarByUserId = New CustomerCarByUserId MyCars.DataSource = GetCustomersCars.CarByUserId(Membership.GetUser().ProviderUserKey)MyCars.DataBind() But in when I use ObjectDataSource it fails<asp:ObjectDataSource id="ObjectDataSource1" runat="server" selectmethod="CarByUserId" typename="CustomerCarByUserId"> <SelectParameters> <asp:Parameter defaultvalue="Membership.GetUser().ProviderUserKey" name="UserId" type="Object" /> </SelectParameters> </asp:ObjectDataSource>I've tried with Membership.GetUser().ProviderUserKey.ToString(), but that doesnt work. Error message:InvalidCastExceptionI connect to the same source in both cases.Any one with an Idee ?
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Jan 14, 2005
I get the error " 'commandBehavior' not declared". What does this mean? What is CommandBehavior exactly?
'
Sub Page_Load(Sender As Object, e As EventArgs)
' Obtain categoryId from QueryString
Dim connectionString As String = "server=(local); trusted_connection=true; database=SalesSide"
Dim sqlConnection As System.Data.SqlClient.SqlConnection = New System.Data.SqlClient.SqlConnection(connectionString)
Dim queryString As String = "Select tblIdent.fldStockNo, tblIdent.fldProgram, tblIdent.fldGenus" & _
"tblIdent.fldVariety, tblIdent.fldSize, tblAvailability.fldQuantity" & _
"FROM tblIdent INNER JOIN tblIdent On tblAvailability.fldStockNo = tblIdent.fldStockNo"
Dim sqlCommand As System.Data.SqlClient.SqlCommand = New System.Data.SqlClient.SqlCommand(queryString, sqlConnection)
sqlConnection.Open
dgAvailability.DataSource = sqlCommand.ExecuteReader(CommandBehavior.CloseConnection)
dgAvailability.DataBind()
sqlConnection.Close
End Sub
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Dec 17, 1999
I'd like to understant the Percent Log Used behavior...
I monitored the Percent Log Used. For a specific database, it was 50 % used. I backup up the transaction log and the Percent Log Used was still 50 % used. For another database, the log was 60 % used. After the backup, it was 80 % used!!!!
Would you help me to understant this situation?
Thank you,
Fabio
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May 28, 1999
Hi all,
I have a question regarding some very odd NT/SQL behavior that is exhibited when running a shell command through xp_cmdshell. If I do a 'net use z: servernamesharename' from the xp_cmdshell, it shows up in Explorer with the icon for a local drive! This would not be more than an ordinary M$ bug, except for the fact if go to a command line, I can't do a 'net use z: /delete' because it says that the network drive isn't there! Can someone shed some light on this?
Thanks,
Ed Molinari
Emerald Solutions
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Jun 3, 2004
Hi
I'm using MSSQL 2000 (with SP3) on Win2000.
Now, before installing the service pack I encountered with several strange bugs in the MSSQL mostly in queries that used TOP, gladly they were all fixed when installing the service pack... or so I thought...
So yesterday while trying to optimize a heavy query (7 joins - 2 of them are left joins from different tables crossed to the same table) I encountered yet again and with the latest service pack with an even stranger bug.
First the returned records are just not always the same, meaning, for example when I use TOP 465 in the SELECT statement, the last record which is 465 contains some value, when using TOP 466 the record before the last which is record 465 contains different value!... of course both with the same ORDER BY clause.
Also when I view the execution plan it's also not same in both cases, with TOP 465 it's one way (and much much faster) and with TOP 466 the plan is completely different and much slower...
Does anyone encountered with this phenomenon? Any suggestions?
BTW, don't pay too much attention to the number 465, in my case this is the border of the problem, after trying this query on different tables I found that each has it's own border that after it the TOP starts to freak out.
Thanks for the help!
Inon.
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Jun 30, 2004
I've scheduled a job to run on a certain schedule, but the Last Run Status date comes back very oddly, a couple years out of synch, the other jobs scheduled report back just fine.
Anyone seen this behavior?
Edward R Hunter, Data Application Designer
comScore Networks, Inc.
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Nov 29, 2005
I have a SP that usually works fine (0-16 CPU time, 40 ms Duration), but from time to time the server hangs with apparently no reason. The SP has a lock timeout set to 500, so it should abort if a lock timeout error (1222) occurs but it doesn't. The Profiler reports very long execution time (over 30 sec), and because of that all other SP calls are blocked, 'cause the transaction opened by the first sp execution is not finished yet.
Any other attempts to identify other blocking queries did not show me anything suspect (sp_lock, dbcc opentran) other then the usual blocked chain. I'm starting to think about an IO bottleneck, or IO failure, that could block the disk access and cause the delay. The status of RAID 5 is healthy.
The server is used as storage system for a website (approx. 2000 concurrent users), and occasionally I noticed an ASP queue, but this strange behavior occurs even during the peak-off hours.
Any thoughts ?
-----
HP Server - 2 CPU @ 3,4 ; 4 GB RAM; SCSI - RAID 5
Windows 2000 Advanced Server - SQL Server 2000 SP4
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Feb 18, 2008
I would like to ask for help. We had no problems with dynamic queries in SQL 2000, which were very fast. But when we ran the same queries in SQL 2005, it was many times slower lasting several seconds. I guess it has something to do with creating execution plan, because when I run it second time, it is suddenly extremely fast. But after just a little change (like adding space character), the speed is very slow again. If it is caused by execution plan in SQL 2005, is it somehow possible to change its settings so that it will behave like in sql 2000?
Thank you for answers!
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Jul 23, 2005
Hi folksI have an C# app. connecting to a MS-ACCESS database with several tables.In a specific situations I have problems with a DateTime type in a table.The problemis when I want to select records from a table in a specific period the dayand monthseems to be swapped in the query, but it only happens when the swappinggives avalid date eg.12/10/2005 (12. Oct. 2005) returns records on 10/12/2005 (10. Dec. 2005)23/05/2005 (23. May 2005) returns records correctly since 05/23/2005 is nota valid date with danish regional settings.The query is:"SELECT [ID], [Activity], [BeginDate] FROM TimeReg WHERE [BeginDate] >= #" +_start + "# " AND [BeginDate] <= #" + _end + "#"_start and _end are of type DateTimeMy PC in running with danish regional settings and if I shift to en-USsettings in the control panel, thisfixes the problem, but that is not a solution for me.Any suggestions to solve this problemThanks in advance.Kim W.
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Apr 22, 2007
SQL Server 2000 SP4.Running the script below prints 'Unexpected':-----------------------------DECLARE @String AS varchar(1)SELECT @String = 'z'IF @String LIKE '[' + CHAR(32) + '-' + CHAR(255) + ']'PRINT 'Expected'ELSEPRINT 'Unexpected'-----------------------------If the @String variable is set to 'y' (or in fact any ANSI character otherthan 'z'), the result is 'Expected'. The comparison also evaluates asexpected if CHAR(255) is replaced with CHAR(254). The server collation, ifthat matters, is SQL_Latin1_General_CP1_CI_AS.It would be helpful to find the explanatin of this behavior. Thanks.--(remove a 9 to reply by email)
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Nov 1, 2007
I am have the following code below on a standalone computer and it worked perfectly. Suddenly, without any significant changes to the code there were no Servers instances found on my local computer. I know there are several server instance on the computer. Why is it acting so unpredictable? The same thing happened when I tried SQLDMO.
// Get a list of SQL servers available on the networks
DataTable dtSQLServers = SmoApplication.EnumAvailableSqlServers(false);
foreach (DataRow drServer in dtSQLServers.Rows)
{
String ServerName;
ServerName = drServer["Server"].ToString();
if (drServer["Instance;] != null && drServer["Instance"].ToString().Length > 0)
ServerName += " + drServer["Instance"].ToString();
if (cmbServer.Items.IndexOf(ServerName) < 0)
cmbServer.Items.Add(ServerName);
}
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Jul 20, 2006
I am writing an upsert proc that should detect the change in state for a record. The change in state happens when a particular date field (default null) is populated. However, I can not get a record set that detects the changes properly.
Here is an example
set ANSI_NULLS on
go
create table #t1
(
ID int,
DateField datetime
)
create table #t2
(
ID int,
DateField datetime
)
insert into #t1 (ID, DateField) values (1, '7/20/2006')
insert into #t2 (ID, DateFIeld) values (1, null)
select * from #t1 join #t2 on #t1.ID = #t2.ID where #t1.DateField <> #t2.DateField
drop table #t1
drop table #t2
The select should return a record because NULL does not equal '7/20/2006' but it doesn't.
What am I missing?
Thanks in advance.
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