SLEEPING/AWAITING COMMAND Question
Dec 3, 2005
I am using SQL Server 2000. In Enterprise Mgr, under Management/Current
Activity, I see a list SPIDs.
I have a multi-tiered .NET web app that uses ADO.NET to connect to the
database. Each time a Stored Proc is called, a new connection is opened, the
data retreieved, and the connection closed and set to Nothing (in VB.NET).
Yet, I see several (15 or so) SPIDs for the user ID that the web app uses to
connect to the database.
The database is local and private, so I know all connections are from me.
What does Status=SLEEPING Command=Waiting Command mean?
What will happen when we get 1000's users on the web app?
Is SQL doing some kind of connection pooling?
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Sep 4, 2015
During our DR drill we found that the same code which used to run perfectly fine on our Primary Data Centre is running very slow on Disaster Recovery DB Server and there are Lot's of open transaction with sleeping status and waittype as 'AWAITING COMMAND'.CPU, Memory and disk utilization are good. The ping reply between the app server and the DB server is well within the limit's even blocking is not their, also nothing is reported in the error logs. We are using SQL server 2014 STD 64 BIT on Windows Server 2012.
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Nov 1, 2006
Hi,Database Server running slow. I used SP_WHO2 ACTIVE and the resulthas many ofXXXX SA RUNNABLE MASTER AWAITINGCOMMAND..........(XXXX is spid)and they stay for couples seconds.Last week , the server was running fine and during weekend ,noneof errors record in Windowsevent log or SQL Server log.Server is Windows 2003 server with 4 CPUs of xeon , 4 GB of memoryandMSSQL SERVER 200 SP4.I found out that every runnable master db tasks has shared lock onkey of'master.dbo.sysxlogins.sysxlogins' objectIs this the problem of slow running database server?Please advice.Peeud
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Jul 20, 2005
I am debugging an app which blocks many processes in a SQL7 server DB.The app log writes every transaction "open" and "close".The weird thing is : when the app logfile says the transaction isdropped (object closed) the db keeps showing the process "running", ina sleeping mode, with open_tran in 2 or even 3 and in an awaitingcommand status.We are working on NT4.0, SP6a (all fixes up to date, MDAC 2.7SP1) onIIS side, an equal box for MTS (same patches and updates) and a SQLServer 7 (on NT4, same fixes ans SPs) database on another box.Is this normal? Those sleeping processes are blocking other apps andeverything gets slow and messy....the only solution is to kill thoseblocking processes.Thanks!
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Mar 8, 2007
If an MS SQL 2005 Connection is sleeping in the activity monitor, does it mean it's not closed? I'm pretty sure it's closed, just want to confirm. Lately, our DB server got hammered with requests and it reached max-pool size (we implemented caching after that).
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Aug 16, 2000
what does the sleeping process will do
I am running the following stored procedure
the cpu value is increasing by time.
I am killing old process manually.
How to stop the sleeping processing.
CREATE PROCEDURE SP_MONITOR2 AS
select spid, hostname,cpu,status,datediff(mi,last_batch,getdate ())Diff_in_Min
from sysprocesses
where hostname <>'' and
last_batch <>'1900-01-01 00:00:00.000'
order by Diff_in_Min desc
the output is
spid hostname cpu status Diff_in_Min
------ -------------------------------------------------------------------------------------------------------------------------------- ----------- ------------------------------ -----------
47 EADMIN2 3662 sleeping 75
9 SETUP6500 11375 sleeping 60
82 EADMIN2 13271 sleeping 59
7 EADMIN2 5147 sleeping 49
27 EADMIN2 4647 sleeping 49
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Feb 10, 2004
Hi,
I have written an application in VB6 connecting to a SQL Server 2000 database using ADO. This app is running on the same computer as SQL Server.
What I am seeing now is that each day 2-3 new connections are being created by SQL and these connections have a "sleeping" status and "AWAITING COMMAND" command. Also, when double-clicking a
connection, it's last TSQL statement is empty... This way, connections are piling up.
Does anyone have an idea why this is happening and what I can do to avoid this ? Also, how can I determine what is causing this ?
Many thanks,
Jurgen Sanders
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Jan 24, 2008
A developer came over and asked me a couple of things
1. Can C# not cleanup SPIDs and just open new ones lieing around
2. Do a large number of spids, even if they are sleeping, cause performance issues?
3. What's the Max # of spids sql server can handle?
BOL ain't too helpful right now
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Mar 8, 2007
Hi, just a quick problem/question. Why do processes in the middle of the package goto sleep? Is there a method of making them go?
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Apr 20, 2001
I have SQL Server 7.0 and I am not able to kill one of the SPID's who is running a SELECT Statement and showing as sleeping.
When I saw in the current activity in EM I see the STATUS as sleeping
COMMAND as SELECT, APPLICATION as Microsoft Transaction server, WAITTIME as 7877 and WAITTYPE as EXCHANGE and CPU 10074
Thanks in advance.
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Jan 6, 2006
I have processes running on the server that show a status of "sleeping" from sp_who and sysprocesses, however they are still running. I run sp_who over and over again and only occasionally the process status shows running, and then switches back to "sleeping" or "defwakeup". I know what all the statuses mean, I just don't know why a running process would ever show as "sleeping". The processes take a very very long time to run as well.
Thanks in advance,
Steve
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Sep 27, 2007
Hi guys,
I may be asking a foolish question but I really need an answer for it.. We have our centralized servere where SQL Server 2005 is installed.... Whenever open the management studio from our desktops, execute some queries (It may be any simple query such as select * from) I find the status of that process 'sleeping'...untill we close the studio or in other words untill that process is killed..
I find the status by Management -> Activity monitor...
Please help me with it...
Has there been anything wrong while setting up Sql Server ?
Please help me ...
Thank you so much...
Saket.
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Nov 3, 2005
I was trying to find the bottle neck on our server while we wererunning a couple very large updates.I ran the following query and noticed there were a couple sleepingspid's that were really eating up the memory. One had a value of16000.I guess my question is was this query still holding on to that memoryeven though the query had finished? Why didn't SQL Server clean it up?select spid,substring(Loginame,1,10) Login,memusage,substring(hostname,1,15) Host,program_name,cmd,statusfrom master..sysprocessesorder by memusage desc
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Jul 20, 2005
HelloI've prepared a small aplication in VS.NET and I use SqlConnection class.Everything is ok, but when I'm trying to disconnect from server usingif (cnSQL->State != ConnectionState::Closed) cnSQL->Close()there is still connection do server present. I have to close connectionbecause I'm trying to drop this database.Have you ever heard about this kind of problem??Trociu--Plain-text over all!!!/**********/write me : trociu@autonom ict pwr wroc plsearch me : gg: 1382729
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Apr 3, 2007
Hi all,
We have a web application with multiple users connecting to SQL Server 2005 database.
Once the users start using the system, I could see in the Process Info from the activity monitor with a several process with status as sleeping and command as Awaiting Command.
I have few questions regarding this for which simple answers would help me ( I searched and couldnt understand from the pages that explained the process information )
My questions are,
1. Does the processes with status sleeping and command as Awaiting Command are needed for the application even after the operations specific to them are complete?
2. Does these process affect the performance ?
3. Does killing these process would affect the application connectivity ?
4. Why do we get several process with status sleeping and command as Awaiting Command? Is this because of the front end programming errors ?
5. What should we do to avoid the increasing number of process with status sleeping and command as Awaiting Command?
Any help would be appreciated.
Thanks in advance,
DBLearner.
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Sep 14, 2006
Dear, Our ASP.NET scripts send SQL statements (as inline SQL or SP) to process the requested job. After the job execution, the process ID stays in the server and waits for next command with sleeping status.Since this process does not go away, next job adds another process and eventually, the server is overloaded with these processes and dies. How can I kill this sleeping processes?Regards,Echo
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Sep 27, 2005
Hi
We just installed SQL service pack 4. I am now finding that when doing a sp_who2 active, there are a lot of connections that are blocked by itself. The common factor is they all have a status of 'sleeping'. The strange thing is that even though it shows the connection is blocked, it is in fact not and will still return results. Below is a snapshot of a portion of what the sp_who2 active returns:
SPID Status Login HostName BlkBy DBName
53 sleeping sa TRACKER 53 dbABC
58 sleeping sa TRACKER 58 dbCDE
64 sleeping sa TRACKER 64 dbSTA
66 RUNNABLE User12 PC24 . master
70 sleeping User5 ANALYSIS 70 dbBML
74 sleeping sa TRACKER 74 dbCDE
76 sleeping sa TRACKER 76 dbPTS
83 sleeping User5 ANALYSIS 83 dbANA
86 DORMANT User11 CPTDB . NULL
Has anyone seen this? Is it related to the installation of service pack 4? (We have installed the services pack on many other SQL servers, but have not come accross this before.
Tx,
TessZA
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Jan 17, 2006
Has anyone done this and about pulled thier hair out?
I downloaded visual express for web development with sql express. Running fine. Like SQL so much, decided to pop for the Developer package. I don't know what I was thinking, maybe I was going to pay for popcorn for billy g & family in the home theatre that night...but I digress.
After much consternation and a 4:00 a.m. adventure, I managed to get rid of SQL Express and install the developer edition. Now were fine. Even ran the aspnet_regsql and set up the aspnetdb database.
I'm thinking, back to development here.
I select APP_DATE and if I try to add the ASPNETDB.mdf file I get the application is being used by another process. Please close all applications that might access this file and try again. So, I then try to create a new database file. I get this error:
Connections to SQL Server Files ( *.mdf) require the SQL Server Express 2005 to function properly.
I can create a connection to the aspnetdb database in the database connections. However, as I work with some of the new ASP NET Membership/Role code, I find it doesn't work.
Will most code work if the ASPNETDB.mdf is not set up int he APP_DATA section?
Come on Microsoft, I can't be the only shoe-string developer that is going to try this.
Has anyone done this and resolved how to get these two to play along.
If I upgrade to Visual Studio, will I still be straddled with SQLExpress.
Can I run SQLExpress side by side with SQL Developer addition?
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Jul 23, 2005
Hello all. I have many connections that are sleeping. I can rightclick, kill, up to 2 at a time. It takes about 20 seconds to kill it.Is that normal? I tried to make a stored procedure to kill them but itate all the power of the server, (all users yelled at me at the sametime :o) )Is this length of time normal for killing these processes?ThanksJeff
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Feb 3, 2015
At one of your client sides we have configured Always on with synchronous mode.Also we have schedule rebuild index and update statistics job which runs in night every alternate day. the issue is there are more then 100 sleeping queries which is blocking update statistics job.
I have to stop update statistics job manually once i come to office manually.
Once I have killed blocking sleeping query but then other sleeping query blocked it and so on.
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Feb 23, 2007
i am using visual web developer 2005 and SQL 2005 with VB as the code behindi am using INSERT command like this Dim test As New SqlDataSource() test.ConnectionString = ConfigurationManager.ConnectionStrings("DatabaseConnectionString1").ToString() test.InsertCommandType = SqlDataSourceCommandType.Text test.InsertCommand = "INSERT INTO try (roll,name, age, email) VALUES (@roll,@name, @age, @email) " test.InsertParameters.Add("roll", TextBox1.Text) test.InsertParameters.Add("name", TextBox2.Text) test.InsertParameters.Add("age", TextBox3.Text) test.InsertParameters.Add("email", TextBox4.Text) test.Insert() i am using UPDATE command like this Dim test As New SqlDataSource() test.ConnectionString = ConfigurationManager.ConnectionStrings("DatabaseConnectionString").ToString() test.UpdateCommandType = SqlDataSourceCommandType.Text test.UpdateCommand = "UPDATE try SET name = '" + myname + "' , age = '" + myage + "' , email = '" + myemail + "' WHERE roll 123 " test.Update()but i have to use the SELECT command like this which is completely different from INSERT and UPDATE commands Dim tblData As New Data.DataTable() Dim conn As New Data.SqlClient.SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|Database.mdf;Integrated Security=True;User Instance=True") Dim Command As New Data.SqlClient.SqlCommand("SELECT * FROM try WHERE age = '100' ", conn) Dim da As New Data.SqlClient.SqlDataAdapter(Command) da.Fill(tblData) conn.Close() TextBox4.Text = tblData.Rows(1).Item("name").ToString() TextBox5.Text = tblData.Rows(1).Item("age").ToString() TextBox6.Text = tblData.Rows(1).Item("email").ToString() for INSERT and UPDATE commands defining the command,commandtype and connectionstring is samebut for the SELECT command it is completely different. why ?can i define the command,commandtype and connectionstring for SELECT command similar to INSERT and UPDATE ?if its possible how to do ?please help me
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Nov 4, 2006
Hi All,
i am using a OLE DB Source in my dataflow component and want to select rows from the source based on the Name I enter during execution time. I have created two variables,
enterName - String packageLevel (will store the name I enter)
myVar - String packageLevel. (to store the query)
I am assigning this query to the myVar variable, "Select * from db.Users where (UsrName = " + @[User::enterName] + " )"
Now in the OLE Db source, I have selected as Sql Command from Variable, and I am getting the variable, enterName,. I select that and when I click on OK am getting this error.
Error at Data Flow Task [OLE DB Source [1]]: An OLE DB error has occurred. Error code: 0x80040E0C.
An OLE DB record is available. Source: "Microsoft SQL Native Client" Hresult: 0x80040E0C Description: "Command text was not set for the command object.".
Can Someone guide me whr am going wrong?
myVar variable, i have set the ExecuteAsExpression Property to true too.
Please let me know where am going wrong?
Thanks in advance.
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Aug 30, 2004
Do somebody know how long (in chars) script(command) can be solved by SQL Command?
Thanks
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Sep 19, 2006
Hi. I am writing a program in C# to migrate data from a Foxpro database to an SQL Server 2005 Express database. The package is being created programmatically. I am creating a separate data flow for each Foxpro table. It seems to be doing it ok but I am getting the following error message at the package validation stage:
Description: An OLE DB Error has occured. Error code: 0x80040E0C.
An OLE DB record is available. Source: "Microsoft SQL Native Client" Hresult: 0x80040E0C Description: "Command text was not set for the command object".
.........
Description: "component "OLE DB Destination" (22)" failed validation and returned validation status "VS_ISBROKEN".
This is the first time I am writing such code and I there must be something I am not doing correct but can't seem to figure it out. Any help will be highly appreciated. My code is as below:
private bool BuildPackage()
{
// Create the package object
oPackage = new Package();
// Create connections for the Foxpro and SQL Server data
Connections oPkgConns = oPackage.Connections;
// Foxpro Connection
ConnectionManager oFoxConn = oPkgConns.Add("OLEDB");
oFoxConn.ConnectionString = sSourceConnString; // Created elsewhere
oFoxConn.Name = "SourceConnectionOLEDB";
oFoxConn.Description = "OLEDB Connection For Foxpro Database";
// SQL Server Connection
ConnectionManager oSQLConn = oPkgConns.Add("OLEDB");
oSQLConn.ConnectionString = sTargetConnString; // Created elsewhere
oSQLConn.Name = "DestinationConnectionOLEDB";
oSQLConn.Description = "OLEDB Connection For SQL Server Database";
// Add Prepare SQL Task
Executable exSQLTask = oPackage.Executables.Add("STOCK:SQLTask");
TaskHost thSQLTask = exSQLTask as TaskHost;
thSQLTask.Properties["Connection"].SetValue(thSQLTask, "oSQLConn");
thSQLTask.Properties["DelayValidation"].SetValue(thSQLTask, true);
thSQLTask.Properties["ResultSetType"].SetValue(thSQLTask, ResultSetType.ResultSetType_None);
thSQLTask.Properties["SqlStatementSource"].SetValue(thSQLTask, @"C:LPFMigrateLPF_Script.sql");
thSQLTask.Properties["SqlStatementSourceType"].SetValue(thSQLTask, SqlStatementSourceType.FileConnection);
thSQLTask.FailPackageOnFailure = true;
// Add Data Flow Tasks. Create a separate task for each table.
// Get a list of tables from the source folder
arFiles = Directory.GetFileSystemEntries(sLPFDataFolder, "*.DBF");
for (iCount = 0; iCount <= arFiles.GetUpperBound(0); iCount++)
{
// Get the name of the file from the array
sDataFile = Path.GetFileName(arFiles[iCount].ToString());
sDataFile = sDataFile.Substring(0, sDataFile.Length - 4);
oDataFlow = ((TaskHost)oPackage.Executables.Add("DTS.Pipeline.1")).InnerObject as MainPipe;
oDataFlow.AutoGenerateIDForNewObjects = true;
// Create the source component
IDTSComponentMetaData90 oSource = oDataFlow.ComponentMetaDataCollection.New();
oSource.Name = (sDataFile + "Src");
oSource.ComponentClassID = "DTSAdapter.OLEDBSource.1";
// Get the design time instance of the component and initialize the component
CManagedComponentWrapper srcDesignTime = oSource.Instantiate();
srcDesignTime.ProvideComponentProperties();
// Add the connection manager
if (oSource.RuntimeConnectionCollection.Count > 0)
{
oSource.RuntimeConnectionCollection[0].ConnectionManagerID = oFoxConn.ID;
oSource.RuntimeConnectionCollection[0].ConnectionManager = DtsConvert.ToConnectionManager90(oFoxConn);
}
// Set Custom Properties
srcDesignTime.SetComponentProperty("AccessMode", 0);
srcDesignTime.SetComponentProperty("AlwaysUseDefaultCodePage", true);
srcDesignTime.SetComponentProperty("OpenRowset", sDataFile);
// Re-initialize metadata
srcDesignTime.AcquireConnections(null);
srcDesignTime.ReinitializeMetaData();
srcDesignTime.ReleaseConnections();
// Create Destination component
IDTSComponentMetaData90 oDestination = oDataFlow.ComponentMetaDataCollection.New();
oDestination.Name = (sDataFile + "Dest");
oDestination.ComponentClassID = "DTSAdapter.OLEDBDestination.1";
// Get the design time instance of the component and initialize the component
CManagedComponentWrapper destDesignTime = oDestination.Instantiate();
destDesignTime.ProvideComponentProperties();
// Add the connection manager
if (oDestination.RuntimeConnectionCollection.Count > 0)
{
oDestination.RuntimeConnectionCollection[0].ConnectionManagerID = oSQLConn.ID;
oDestination.RuntimeConnectionCollection[0].ConnectionManager = DtsConvert.ToConnectionManager90(oSQLConn);
}
// Set custom properties
destDesignTime.SetComponentProperty("AccessMode", 2);
destDesignTime.SetComponentProperty("AlwaysUseDefaultCodePage", false);
destDesignTime.SetComponentProperty("OpenRowset", "[dbo].[" + sDataFile + "]");
// Create the path to link the source and destination components of the dataflow
IDTSPath90 dfPath = oDataFlow.PathCollection.New();
dfPath.AttachPathAndPropagateNotifications(oSource.OutputCollection[0], oDestination.InputCollection[0]);
// Iterate through the inputs of the component.
foreach (IDTSInput90 input in oDestination.InputCollection)
{
// Get the virtual input column collection
IDTSVirtualInput90 vInput = input.GetVirtualInput();
// Iterate through the column collection
foreach (IDTSVirtualInputColumn90 vColumn in vInput.VirtualInputColumnCollection)
{
// Call the SetUsageType method of the design time instance of the component.
destDesignTime.SetUsageType(input.ID, vInput, vColumn.LineageID, DTSUsageType.UT_READWRITE);
}
//Map external metadata to the inputcolumn
foreach (IDTSInputColumn90 inputColumn in input.InputColumnCollection)
{
IDTSExternalMetadataColumn90 externalColumn = input.ExternalMetadataColumnCollection.New();
externalColumn.Name = inputColumn.Name;
externalColumn.Precision = inputColumn.Precision;
externalColumn.Length = inputColumn.Length;
externalColumn.DataType = inputColumn.DataType;
externalColumn.Scale = inputColumn.Scale;
// Map the external column to the input column.
inputColumn.ExternalMetadataColumnID = externalColumn.ID;
}
}
}
// Add precedence constraints to the package executables
PrecedenceConstraint pcTasks = oPackage.PrecedenceConstraints.Add((Executable)thSQLTask, oPackage.Executables[0]);
pcTasks.Value = DTSExecResult.Success;
for (iCount = 1; iCount <= (oPackage.Executables.Count - 1); iCount++)
{
pcTasks = oPackage.PrecedenceConstraints.Add(oPackage.Executables[iCount - 1], oPackage.Executables[iCount]);
pcTasks.Value = DTSExecResult.Success;
}
// Validate the package
DTSExecResult eResult = oPackage.Validate(oPkgConns, null, null, null);
// Check if the package was successfully executed
if (eResult.Equals(DTSExecResult.Canceled) || eResult.Equals(DTSExecResult.Failure))
{
string sErrorMessage = "";
foreach (DtsError pkgError in oPackage.Errors)
{
sErrorMessage = sErrorMessage + "Description: " + pkgError.Description + "";
sErrorMessage = sErrorMessage + "HelpContext: " + pkgError.HelpContext + "";
sErrorMessage = sErrorMessage + "HelpFile: " + pkgError.HelpFile + "";
sErrorMessage = sErrorMessage + "IDOfInterfaceWithError: " + pkgError.IDOfInterfaceWithError + "";
sErrorMessage = sErrorMessage + "Source: " + pkgError.Source + "";
sErrorMessage = sErrorMessage + "Subcomponent: " + pkgError.SubComponent + "";
sErrorMessage = sErrorMessage + "Timestamp: " + pkgError.TimeStamp + "";
sErrorMessage = sErrorMessage + "ErrorCode: " + pkgError.ErrorCode;
}
MessageBox.Show("The DTS package was not built successfully because of the following error(s):" + sErrorMessage, "Package Builder", MessageBoxButtons.OK, MessageBoxIcon.Information);
return false;
}
// return a successful result
return true;
}
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May 19, 2007
Hi,I'm using the sql TOP command to retrieve the top N number of results where N is a value passed into the stored proc...eg: select TOP(@N) table.*from table...etc..if @N is not passed into the stored proc then by default i want it to select every row from the table. e.g to achieve something similar to...select table.*from table...how can i do this with with as few lines of code possible? thanks!
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Aug 26, 2007
Hello, i have this sql command:
sqlcommand2.CommandText = "Select Count(UserIP) From InboundTraffic Where InboundURL Contains('" & SiteDomain(i).ToString & "') and DateTimeReceived > #" & Last30Days & "#"
My problem is that it is counting every field in the coulmn UserIp even though every field under Inboundurl currently contains 'a' and SiteDomain has a value of something like google.com. Should it not be returning nothing? Thanks!
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May 6, 2004
Okay I have a column
Red
Red
Blue
Yellow
Blue
Blue
Blue
Blue
I want to return the value that appears most i.e. in this case Blue.
Thanks
Ben
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Sep 6, 2004
Hi!
Suppose a company has ten branches and a total employees of 10,000 ones. At the employees' table, how may I calculate the difference between every employee's salary to the average salary of own branch and write to the other field of table, just with a SQL Command?
Employee:
ID | Branch | Salary | DifferenceToAverage
Regards,
M.Sadegh Samiei
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Oct 21, 2004
There are 2 relevant fields in the table: SystemID & Description
For anything w/a SystemID of 1001, I want to add "ABC-" in FRONT of the description.
For example: If The description was XYZ and the systemID 1001, i want it to change to: ABC-XYZ
Thank you
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Sep 29, 2005
I am using the bcp command to export a bulk text file into the database,
bcp elearning.dbo.BulkData in mobile.txt -c -t, -SZOHL-02 -Usa -P1234567890 -E
I have 6 fields in the table to which i am exporting data.One field is numeric and i have to set the identity to yes,It gives me an error string data trucncated. When i remove the identity field, i am able to export data.So, how do i tackle this prob?I used the -E attribute to keep the identity .But still i get the error. The text file has comma seperated fields.I am using sql server 2000
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Nov 2, 2000
Hello, i'm a junior progammer,
I must use the BCP command for create a file that is needed to be used by another program.I have my template to use EX.:
ASKOFE00001ASQSQOPSAZ000123324AAJISQ
ASDAJDIOW78708AMXOPSAJSMA565876979AA
I've tried but my result was 1 line whith ascii character.
Please help me.
Massimo Nardi
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Aug 24, 1999
Hi !
Does anyone know the sql-statement to check the actual length in a varchar2 columns.
For example in Oralce you can do this
select length(column_name) from table;
I want to check that a program hasn't been wriiten the whole column with spaces.
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