I am trying to use dynamic sql with a return parameter, but with limited success. I am using WebMatrix, vb.net and MSDE to perform this routine. Can someone please clue me in. I have read two fine articles by <a href='http://www.algonet.se/~sommar/dyn-search.html>Erland Sommarskog</a> on dynamic sql using sp_executesql, as well as the somewhat opaque article by Microsoft (262499) on the subject.
While there may be other ways to accomplish this task, I am interested in making it work with dynamic SQL. In production, there will be over 20 parameters coming from the vb.net to the SQL, being driven from user input. Then those same variables will be used to actually retrieve the records to a datagrid.
So with a tip of the cap to Rod Serling, I submit this small code and SQL for your consideration from my Twilight Zone:
Public Function totalrecordsbysql(list as arraylist) as integer dim RetVal as new integer dim querystring as string
Dim cn As SqlConnection = New SqlConnection(ConfigurationSettings.AppSettings("Indiafriend")) Dim cmd As SqlCommand = New SqlCommand("SimpleDynProfileCount", cn) cmd.commandtype = commandtype.storedprocedure
try mydr=cmd.executereader() catch e as sqlexception dim err as sqlerror dim strErrorString as string
for each err in e.Errors strErrorString += "SqlError: #" & err.Number.ToString () & vbCRLF + err.Message trace.write("sqlexception",strErrorString) Next
Please note the commented RAISERROR statement. If I uncomment this statement, I will get a return value of 11 records. If I leave it out, I get zero records. The data is the database should return 11 records, based on the criteria of age > 11
The basic syntax for the sp_executesql with a return value is:
Code Snippet DECLARE @count int DECLARE @ParmStr nvarchar(256) set @count=0 set @ParmStr = N' @lvl tinyint, @cnt int OUTPUT' execute sp_executesql N'select @cnt=count(*) from pubs.dbo.employee where job_lvl = @lvl', @ParmStr, @lvl = 35, @cnt=@count OUTPUT print 'count: ' + cast(@count as nvarchar(4))
This returns a value of 3.
I need to change this to return the numbers of rows that were deleted, such as:
Code Snippet DECLARE @count int DECLARE @ParmStr nvarchar(256) set @count=0 set @ParmStr = N' @lvl tinyint' execute sp_executesql N'delete from pubs.dbo.employee where job_lvl = @lvl', @ParmStr, @lvl = 35 -- Need count print 'count: ' + cast(@count as nvarchar(4))
Any ideas on how to modify this so that I can report on number of rows deleted?
SET @ExecuteString = N'SELECT @CurDestPatIDChar = RTRIM(CAST(Max(CAST([UserID] AS decimal(2, 0))) AS char(2))) '
SET @ExecuteString = RTRIM(@ExecuteString) + N' FROM ' + RTRIM(@TableName)
SET @ExecuteString = RTRIM(@ExecuteString) + N' WHERE [CustID] = ''' + RTRIM(@CustomerID) + N''' AND [OfficeID] = ''' + RTRIM(@OfficeID) + N''' AND [AccNo] = ''' + RTRIM(@DestinationAccountNo) + N''''
EXECUTE SP_EXECUTESQL @ExecuteString PRINT @CurDestPatIDChar ------------------------------------------------------------------------------ When I run this in the Query Ananlyzer I get the following error: Server: Msg 137, Level 15, State 1, Line 0 Must declare the variable '@CurDestPatIDChar'.
The above set of statements do not seems to work with EXECUTE either.
Where as if I run the following query with the same variable declarations as above:
----------------------------------------------------------------------------- SET @ExecuteString = N'SELECT @CurDestPatIDChar1 = RTRIM(CAST(Max(CAST([PatientID] AS decimal(2, 0))) AS char(2))) '
SET @ExecuteString = RTRIM(@ExecuteString) + N' FROM ' + RTRIM(@TableName)
SET @ExecuteString = RTRIM(@ExecuteString) + N' WHERE [CustID] = ''' + RTRIM(@CustomerID) + N''' AND [OfficeID] = ''' + RTRIM(@OfficeID) + N''' AND [AccNo] = ''' + RTRIM(@DestinationAccountNo) + N''''
I donot get any error messages but the variable '@CurDestPatIDChar' is not initialized.
The problem seems to be that the execute statement interprets any variable assignments (here it is '@CurDestPatIDChar', defined as part of the execute string in quotes) as local to the execute statement.
I shall be grateful if you can provide me with a solution for this,
Ok i have a piece of test ddl sql that is written to a varchar(max) column. Entered by a user.
GO's and missing semi colons seem to break it, if you try to execute it with EXEC or sp_executesql, however the sql can be executed on Management Studio as is, so how can i execute it as is successfully?
In a nutshell i retreive the DDL sql from the column into a nvarchar(max) variable called @SQL , and i need to execute it.
I have tried: EXEC(@SQL) and sp_executesql @SQL, both return the error , incorrect syntax near 'GO'.
The problem is obviously i have to have the go statements, in order to create some fo the ddl objects correctly. But EXEC and sp_executesql do not like that. I also found that semi colons are required after every statement.
Hello, i need to create temporary table inside SP. i having one string variable @strQuery which contain dynamic query inside SP. i am executing that trhough execute sp_executesql @strQuery once query build.
now instead of select query , i want to creat hash table. so i wrote :
set @strQuery = "Select * into #tmp_tbl from table_name..." when i tried to execute it through
execute sp_executesql @strQuery , its giving error 'Invalid object name '#tmp_tbl' If i removed Hash then it works fine. even for double Hash also its work fine. but i want hash table only as i want that table local to that user.
Even direct execution of select statement without @strQuery works fine. but i want to execute @strQuery through execute sp_executesql @strQuery only as query is dynamic .
please guide me how to do this? its very urgent for me. thanks in advance.
I have a SSIS package contains an "Execute SQL Task". The SQL will raise error or succeed. However, it sounds the package won't pick up the raised error?
Or is it possible to conditional run other control flow items according the the status of SQL task execution?
I need to get a value from another Stored Procedure to use within another Stored Procedure. This is what I currently have, but it is not even close, I'm sure:
CREATE PROCEDURE dbo.sp_JT_BS01c_Calendar_Build_BufferSheet_DateRange AS
This is a odd problem where a bad plan was chosen again and again, butthen not.Using the profiler, I identified an application-issued statement thatperformed poorly. It took this form:exec sp_executesql N'SELECT col1, col2 FROM t1 WHERE (t2= @Parm1)',N'@Parm1 int', @Parm1 = 8609t2 is a foreign key column, and is indexed.I took the statement into query analyzer and executed it there. Thequery plan showed that it was doing a scan of the primary key index,which is clustered. That's a bad choice.I then fiddled with it to see what would result in a good plan.1) I changed it to hard code the query value (but with the parmdefinition still in place. )It performed well, using the correct index.Here's how it looked.exec sp_executesql N'SELECT cbord.cbo1013p_AZItemElement.AZEl_Intid AS[Oid], cbord.cbo1013p_AZItemElement.incomplete_flag AS [IsIncomplete],cbord.cbo1013p_AZItemElement.traceflag AS [IsTraceAmount],cbord.cbo1013p_AZItemElement.standardqty AS [StandardAmount],cbord.cbo1013p_AZItemElement.Uitem_intid AS [NutritionItemOid],cbord.cbo1013p_AZItemElement.AZeldef_intid AS [AnalysisElementOid] FROMcbord.cbo1013p_AZItemElement WHERE (Uitem_intid= 8609)', N'@Parm1 int',@Parm1 = 8609After doing this, re-executing the original form still gave badresults.2) I restored the use of the parm, but removed the 'exec' from thestart.It performed well.After that (surprise!) it also performed well in the original form.What's going on here?
select @LastChangedDate = GetDate() select @IDFound = PK_ID from PCPartsList where ProdCode = @ProdCode
if @IDFound > 0 begin update PCPartsList set Description = @Description, ManCode = @ManCode, ProdCode = @ProdCode, Price = @Price, Comments = @Comments, LastChanged = @LastChangedDate where PK_ID = @IDFound end else insert into PCPartsList (Description, ManCode, ProdCode, Price, Comments, LastChanged) values(@Description, @ManCode, @ProdCode, @Price, @Comments, @LastChangedDate) GO
It executes fine so I know i've done that much right.... But what i'd like to know is how I can then return a value - specifically @LastDateChanged variable
I think this is a case of i've done the hard part but i'm stuck on the simple part - but i'm very slowly dragging my way through learning SQL. Someone help?
Can anyone tell me how to capture the return code of a process launched by an Execute Process Task? I am able to capture the output by using the StandardOutputVariable but can't seem to capture the actual code.
I am trying to have an Excecute SQL Task return a single row result set executed on SQL Server 2005.
The query in the Execute SQL Task is: select 735.234, 2454.123
I get a conversion error when trying to assign to SSIS variables of type Double. I have nothing configured in the "Parameter Mapping" tab. I have the two SSIS Double variables mapped to the Tesult Name 0 and 1 in the "Result Set" tab
I don't want to use a for loop enumerator since there is a single row returned.
I simply want to assign these two values to SSIS Double variables (double is the closest match)
I can't even hack this by converting the decimals as string and then using DirectCast to convert them to Double.
I have no idea to write a store procedure or only query to pass a string parameter more than 4000 characters into execute() and return result for FETCH and Cursor.
I'm having a hard time to getting back an xml data back from a stored procedure executed by an Execute SQL task.
I'm passing in an XML data as a parameter and getting back resulting XML data as a parameter. The Execute SQL task is using ADO connection to do this job. The two parameters(in/out) are type of "string" and mapped as string.
When I execute the task, I get the following error message.
[Execute SQL Task] Error: Executing the query "dbo.PromissorPLEDataUpload" failed with the following error: "The incoming tabular data stream (TDS) remote procedure call (RPC) protocol stream is incorrect. Parameter 2 ("@LogXML"): Data type 0xE7 has an invalid data length or metadata length.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.
I also tried mapping the parameter as XML type, but that didn't work either.
If anyone knows what's going on or how to fix this problem please let me know. All I want to do is save returning XML data in the parameter to a local package variable.
I have been trying to get my dynamic query to work with sp_executesql and I cant seem to figure out this one issue.DECLARE @SQL NVARCHAR(1000)SET @SQL = N'WITH Data AS(SELECT Id, Username, FirstName, LastName, Email, LastLogin, ROW_NUMBER() OVER(ORDER BY @SortExpression) AS RowNumber FROM Users) SELECT * FROM Data WHERE RowNumber BETWEEN @Between1 AND @Between2'EXECUTE sp_executesql @SQL, N'@SortExpression VARCHAR(50), @Between1 INT, @Between2 INT', @SortExpression = 'Email', @Between1 = 1, @Between2 = 10As you can see, the data should get sorted by the value of @SortExpression. However thats not the case. The Data does not get sorted at all no matter that i pass in as the value of @SortExpression.I can't seem to figure out why its not working.
I'm having trouble working out why the sp_executesql procedure is not replacing my place holders with the value assigned to it.
Some quick info: I'm running the routine from the commandline through OSQL on a box that has MSSQL2000 enterprise installed. The code is sent to a MSSQL2005 box.
I've noticed one dumb thing I've done and that is making the nvarchar variable @db_name a different size to the one declared in the sp_executesql command. But I'm not sure if that is the problem. It throws a @db_name is not a database error etc.
Snippet that is not working:
declare @db_name varchar(80)
declare @sql_command nvarchar(1500)-- for our dynamic sql command within the cursor loop.
Hi I am trying to execute sp_executesql dynamically. What I am trying to do is read all the user tables using a cursor build sql statement and using EXEC sp_execute sqlstmt. Here is piece of code.
DECLARE C1 CURSOR FOR SELECT NAME FROM SYSOBJECTS WHERE XTYPE='U' OPEN c1 FETCH NEXT FROM C1 INTO @v_TableName WHILE @@FETCH_STATUS = 0 BEGIN SELECT @v_SQL= 'DROP TABLE ' + @v_TableName --EXEC @v_SQL PRINT @v_SQL IF @v_Error<>0 BEGIN SELECT @ErrorCount=@ErrorCount+1 PRINT 'ERROR OCCURED WHILE DROPING TABLE ' + @v_TableName --GOTO ErrorHandler END FETCH NEXT FROM C1 INTO @v_TableName END CLOSE c1 DEALLOCATE C1
hi everybody How can we execute a string of sql statements in Oracle ,similar to sp_executesql in sql server. ie a string can contain insert into a table statement,delete a row from a table statement, update etc. Thanks all of You
Is there anything that will allow you to execute a line of sql code if it is longer than 4000 Unicode characters? The line of code is stored in a NVARCHAR Variable.
I'm using sp_ExecuteSQL and have hit the 4000 character wall
Hi all,Can sp_executesql used inside a user defined function, itried but it has compiled well, but when i call the functio it showsOnly functions and extended stored procedures can be executed fromwithin a function.What i have went wrongThanks in advancethomson
I have a full sql statement which was generated dynamicly, and need toexecute that string and then take the output and generate aspreadsheet document based on the output. I'm new to sql and the bookI have doesn't really explain much. Anyone with an example of theirwork would be appreaciated.thank you.
(RECEIVE message_body, conversation_handle, message_type_name, message_sequence_number, conversation_group_id FROM ' + @callingQueue + ' INTO @msgTable WHERE conversation_group_id = '
+ CAST(@conversationGroup AS char) + '), TIMEOUT 2000'
EXEC sp_executesql @SQL, N'@msgTable TABLE output', @msgTable out
I get the following message:
Msg 137, Level 15, State 2, Procedure CENTRAL_Queue_Processor, Line 92
Must declare the scalar variable "@msgTable".
I have decalred the variable but it is a table variable, this leadds me to believe sp_execute sql only supports scalar varibles not table variables, BOL does not say yes or no in this respect.
I have a package that I have been attempting to return a error code after the stored procedure executes, otherwise the package works great.
I call the stored procedure from a Execute SQL Task (execute Marketing_extract_history_load_test ?, ? OUTPUT) The sql task rowset is set to NONE. It is a OLEB connection.
I have two parameters mapped:
tablename input varchar 0 (this variable is set earlier in a foreach loop) ADO. returnvalue output long 1
I set the breakpoint and see the values change, but I have a OnFailure conditon set if it returns a failure. The failure is ignored and the package completes. No quite what I wanted.
The first part of the sp is below and I set the value @i and return.
Why is it not capturing and setting the error and execute my OnFailure code? I have tried setting one of my parameter mappings to returnvalue with no success.
I am using sp_executesql this to pass parameter to sql string and I am seeing deadlock between sp_prepexec which does UPDATE with another UPDATE done by another process. When it comes to speed and deadlock, would you recomand not using sp_executesql?
In out web application it happens very rarely that same query gets executed more than once meaning that sp_executesql is degrading performance. Does anyone know a way to tell ADO.NET to stop encapsulating queries in sp_executesql? Thank you.
