Using Delete With Sp_executesql And Getting Return Value

May 19, 2008


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?

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Help With Sp_executesql And Return Parameter

Nov 10, 2003

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

dim mydr as SqlDataReader

cmd.Parameters.add("@TotalRecords",SqlDbType.int).direction=ParameterDirection.Output
cmd.Parameters.add("@age",sqldbtype.int).value = 18

cn.Open()

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

finally

RetVal = cmd.parameters("@TotalRecords").value

end try


Return RetVal
cn.close()
End Function

Now here is the stored procedure:

CREATE PROCEDURE SimpleDynProfileCount

@age int,
@TotalRecords int output

AS

Declare @sql nvarchar(4000),
@paramlist nvarchar(4000)

select @sql = 'select @xTotalRecords = count(*) from profile where 1 = 1 '

// RAISERROR(@sql, 16, 1)

IF @age > 0
Select @sql = @sql + ' AND age > @xage '

Select @paramlist = '@xage int, @xTotalRecords int output'

Execute sp_executesql @sql,@paramlist,@age,@xTotalRecords = @TotalRecords output

select @TotalRecords
GO

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

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May 13, 2002

This is what I am trying:
set @cntsql = 'select count(' + @dimky + ') as dimcnt from ' + @dimtb + ' where ' + @dimky +' is not null'

set @dimcnt = execute sp_executesql @cntsql

What I want to do is return the count from the dynamically selected database. If I type it in like:

set @dimcnt = (select count('ptky') as dimcnt from pttable where ptky is not null)

it works.... can anyone help... this code is in the middle of a cursor.

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Jun 3, 2006

Hi,
How can I check return value from
EXECUTE sp_executesql(SQLStr)
Thanks,

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Jun 3, 2006

Hi,
How can I check return value from
EXECUTE sp_executesql(SQLString)
Thanks,

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Aug 21, 2006

Hi All,

Create proc sproc_Insert
@TableName varchar(50),
@InsertColumns varchar(1000),
@InsertValues varchar(2000),
@WhereCondition varchar(200)
as
Begin
Declare @CheckStr nVarchar(2000)
Declare @RetVal int
Set @checkStr = 'Select * from '+ @TableName + ' '+ @WhereCondition
execute sp_executesql @checkStr,@RetVal output
print @RetVal
End

I am not able to retrieve the return value in the above procedure. For example if data exists then 1 else o



Thanks & Regards

Bijay

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Jul 23, 2005

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?

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Dec 3, 2006

Hello, I created a DELETE Stored Procedure in SQL 2005. When calling this procedure from my server code (VB.NET in my case) I need to know if the record was deleted or not. How should I do this? Should I make the procedure to return True or False? If yes, how can I do this? My Stored Procedure is as follows (I think it is ok): SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO ALTER PROCEDURE [dbo].[Content_DeleteContent]   -- Define the procedure parameters   @ContentName NVARCHAR(100),   @ContentCulture NVARCHAR(5) AS -- Prevent extra result sets from interfering with SELECT statements. SET NOCOUNT ON; -- Declare and define ContentId DECLARE @ContentId UNIQUEIDENTIFIER; SELECT @ContentId = ContentId FROM dbo.Content WHERE ContentName = @ContentName -- Check if ContentId is Not Null IF @ContentId IS NOT NULL   BEGIN     -- Check if ContentId is Null     IF @ContentCulture IS NULL                         BEGIN                                 -- Delete all localized contents from dbo.ContentLocalized                                 DELETE                                 FROM dbo.ContentLocalized                                 WHERE ContentId = @ContentId                                 -- Delete content from dbo.Content                                 DELETE                                 FROM dbo.Content                                 WHERE ContentName = @ContentName;                         END                 ELSE                         -- Delete localized content from dbo.ContentLocalized                         DELETE                         FROM dbo.ContentLocalized                         WHERE (ContentID = @ContentID   AND ContentCulture = @ContentCulture)   END GO Thanks, Miguel

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Jul 31, 2006

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.

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Aug 8, 2005

What is wrong in this query..how can I make it to work


DECLARE @strSQL nVarchar(4000)
DECLARE @Name VArchar(100)

--SET @Name = '''sysdatabase'',''sysindexes'''

SET @Name = ''sysdatabase''
SET @strSQL = 'SELECT * FROM dbo.sysobjects WITH (NOLOCK) WHERE Name IN (@prmName)'

EXECUTE dbo.sp_executesql @strSQL,
N'@prmName varchar(100)',
@prmName= @Name


Note : I do not want to replace the query as

SET @strSQL = 'SELECT * FROM dbo.sysobjects WITH (NOLOCK)
WHERE Name IN ' + @Name + ')' , because my queryplan changes if I do this.

Any work around or anything you guys suggest ..

Thanks.

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Feb 27, 2008

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.

fetch

next

from

settings_cursor

into

@db_name



while

@@fetch_status = 0

begin

print 'CHECKING DBOPTIONS FOR ' + @db_name + ' - ( CHECKSUM, CREATE & UPDATE STATS, FULLRECOVERY)'



set @sql_command ='select'

set @sql_command = @sql_command + 'count(*)'

set @sql_command = @sql_command + 'from'

set @sql_command = @sql_command + 'sys.databases'

set @sql_command = @sql_command + 'where'

set @sql_command = @sql_command + 'name = ''@db_name'''

set @sql_command = @sql_command + 'and'

set @sql_command = @sql_command + 'page_verify_option_desc = ''checksum'''

set @sql_command = @sql_command + 'and'

set @sql_command = @sql_command + 'is_auto_create_stats_on = 1'

set @sql_command = @sql_command + 'and'

set @sql_command = @sql_command + 'is_auto_update_stats_on =1'

set @sql_command = @sql_command + 'and'



-- select recovery model based upon database name.

if @db_name = 'DBAdmin'

or @db_name = 'Master'

or @db_name = 'Model'

or @db_name = 'msdb'

begin

set @sql_command = @sql_command + 'recovery_model_desc = ''simple'''

end

else

begin

set @sql_command = @sql_command + 'recovery_model_desc = ''full'''

end



-- include db chaining for Master database

if @db_name = 'Master'

begin

set @sql_command = @sql_command + 'and'

set @sql_command = @sql_command + 'is_db_chaining_on = 1'

end



-- execute sql command.

--print @sql_command



declare @count int

execute @count = sp_executesql @sql_command, N'@db_name nvarchar(20)',@db_name=@db_name



if @count = 0-- no records were returned as the settings were wrong.

begin

select 'Issue with settings. altering now'



if @db_name = 'DBAdmin'

or @db_name = 'Master'

or @db_name = 'Model'

or @db_name = 'msdb'

begin

alter database [@db_name] set recovery simple

alter database [@db_name] set page_verify checksum

end

else

begin

alter database [@db_name] set recovery full

alter database [@db_name] set page_verify checksum



end



if @db_name = 'msdb'

begin

alter database [@db_name] set db_chaining on

end



-- all databases get these switched on

alter database [@db_name] set auto_create_statistics on

alter database [@db_name] set auto_update_statistics on

end

else

begin

select 'all settings for ' + @db_name + ' are good'

end



fetch next from settings_cursor into @db_name

end



-- clean up

close settings_cursor

deallocate settings_cursor

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Jan 18, 2002

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

Please let me know where I am doing wrong.

Thanks,
Rau

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Sep 3, 2004

hi everybody
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ie a string can contain insert into a table statement,delete a row from a table statement, update etc.
Thanks all of You

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IF cast(@sumclause as int)>0
BEGIN
...
END

I'm first putting it in a string because I'm passing another string into it which can't be seen above.

As you can see, I tried casting it since it had a problem with computing a string as an int, but it still doesn't work. Help?

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Hi There

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I am trying the following:

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+ CAST(@conversationGroup AS char) + '), TIMEOUT 2000'

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I get the following message:

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Can this be done?

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Feb 12, 2008


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I have two parameters mapped:

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The first part of the sp is below and I set the value @i and return.


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as

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FROM authors
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',
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But if i don't use sp_executesql like below:

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execute sp_executesql N'SELECT DISTINCT au_id,
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FROM authors
WHERE au_lname LIKE @au_lname
',
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but It return all rows regardless of changing condition to any value.

But if i don't use sp_executesql like below:

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FROM authors
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AS

DECLARE @strSQL nvarchar(200)

IF @Filter IS NOT NULL
BEGIN
SET @strSQL = N'SELECT * FROM vwRandomViewName ' + @Filter
END

IF @Filter IS NULL
BEGIN
SET @strSQL = N'SELECT * FROM vwRandomViewName'
END

EXEC(@strSQL)


GO


And is called thusly:

EXEC sp_LetsGetSomeData @Filter = ' WHERE Team = ''RandomTeam'''

When I do this it never adds the filter. I tried to write a sproc like this:

CREATE PROC dbo.LetsGetSomeData2(@Filter nvarchar(200) = NULL)
AS

DECLARE @strSQL nvarchar(200)

SET @strSQL = N'SELECT * FROM vwRandomView'

EXECUTE sp_executesql @strSQL, @Filter
GO


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Hi,
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Hi all
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Apparently this is true because for example create the following Function..

Create Function Test(@Input int)
Returns int
AS
Begin
Exec sp_who -- only for Test purpose
Return @Input
End

Now Execute this --> Select dbo.test(12).....
Sql Server will return the following Error

Server: Msg 557, Level 16, State 2, Procedure Test, Line 6
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Jan 31, 2008

I have this code:

USE BDPrincipal
GO

IF OBJECT_ID(N'aquery') is not null
DROP FUNCTION aquery
GO

CREATE FUNCTION aquery()
Returns nvarchar(500)
as
Begin
Declare @var nvarchar(500);
Set @var = 'Select Distinct Description from dbo.tblScanners';
Return @var
end
GO

exec sp_executesql aquery;



I created that code to prove if it works.
But the result doesn´t appear, and the message is:

Command(s) completed successfully.

I need it to work.

Because I need to create a very dinamic query.

Please help me!

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EXEC sp_executeSQL @ParmDef_Ls,
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ALTER PROCEDURE [dbo].[AMTRANHDRPaidTranHistAP]

@CharVariable varchar(500),

@IntVariable bigint

as

Declare

@SQLHolder nvarchar(4000)

set @SQLHolder = 'SELECT T1.SMBNKNumber, T1.AMACTNumber, T1.AMALTNumber,

POORDERHDR.POORHNumber, T1.AMTRHNumber, T1.AMTRHType, T1.AMTRHSubType,

T1.AMTRHCode, T1.AMTRHDate, T1.AMTRHAmt, T1.AMTRHDueDate,

T1.AMTRHDiscAllowed, T1.AMTRHDiscDate, T1.SMBCHNumber, T1.AMTRHMasterCode,

T3.SMBCHStatus, T2.AMALTCode, T2.AMALTName, T1.AMTRHAmt - isnull(TotalBalance.BalDue,0) as BalDue, isnull(TotalBalance.PaidAmt,0) as PaidAmt,

isnull(TotalBalance.DiscTaken,0) as DiscTaken, isnull(TotalBalance.AdjTaken,0) as AdjTaken,

T1.AMTRHRecvShip, CASE WHEN T1.AMTRHStatus = ''P'' THEN ''Paid'' WHEN T1.AMTRHStatus = '' '' THEN ''Open''

WHEN T1.AMTRHStatus = ''S'' THEN ''Select'' WHEN T1.AMTRHStatus = ''H'' THEN ''Hold'' end as AMTRHStatus,

T1.POORRNumber, POORDERREL.POORDNumber, POORDERDTL.POORHNumber, POORDERHDR.POORHCode, POORDERHDR.POORHCode + ''-''

+ CAST(POORDERDTL.POORDSeq as Varchar) + ''-'' + CAST(POORDERREL.POORRSeq as Varchar) AS ReleaseNumber, TotalBalance.LastPaymentDate,

TotalBalance.PaymentCount

FROM

(

SELECT AMTRANHDR.SMBNKNumber, AMTRANHDR.AMACTNumber, AMTRANHDR.AMALTNumber, AMTRANHDR.AMTRHStatus,

AMTRANHDR.AMTRHNumber, AMTRANHDR.AMTRHType, AMTRANHDR.AMTRHSubType,

AMTRANHDR.AMTRHCode, AMTRANHDR.AMTRHDate, AMTRANHDR.AMTRHAmt, AMTRANHDR.AMTRHDueDate,

AMTRANHDR.AMTRHDiscAllowed, AMTRANHDR.AMTRHDiscDate, AMTRANHDR.SMBCHNumber, AMTRANHDR.AMTRHMasterCode,

AMTRANHDR.AMTRHRecvShip, AMTRANHDR.POORRNumber

FROM AMTRANHDR

WHERE AMTRANHDR.AMTRHDeletedOn is null and AMTRANHDR.ADDIVNumber = @ADDIVNumber and @Where

) AS T1

LEFT JOIN

(

SELECT AMALTERNATE.AMALTCode, AMALTERNATE.AMALTName, AMALTERNATE.AMALTNumber

FROM AMALTERNATE

) AS T2 ON T1.AMALTNumber = T2.AMALTNumber

LEFT JOIN

(

SELECT SMCODEBCH.SMBCHStatus, SMCODEBCH.SMBCHNumber

FROM SMCODEBCH

) AS T3 ON T1.SMBCHNumber = T3.SMBCHNumber

LEFT OUTER JOIN [dbo].POORDERREL ON T1.POORRNumber = POORDERREL.POORRNumber

LEFT OUTER JOIN [dbo].POORDERDTL ON POORDERREL.POORDNumber = POORDERDTL.POORDNumber

LEFT OUTER JOIN [dbo].POORDERHDR ON POORDERDTL.POORHNumber = POORDERHDR.POORHNumber

LEFT OUTER JOIN

(

SELECT AMPMTCROSS.AMPMCItem,

sum(isnull(AMPMTCROSS.AMPMCAmount,0) +

isnull(AMPMTCROSS.AMPMCDiscount,0) + isnull(AMPMTCROSS.AMPMCAdjust,0)) as BalDue,

sum(isnull(AMPMTCROSS.AMPMCAmount,0)) as PaidAmt,

Count(0) AS PaymentCount, MAX(AMTRHDate) AS LastPaymentDate,

sum(isnull(AMPMTCROSS.AMPMCDiscount,0)) as DiscTaken,

sum(isnull(AMPMTCROSS.AMPMCAdjust,0)) as AdjTaken

FROM [dbo].AMPMTCROSS

INNER JOIN [dbo].AMTRANHDR ON AMPMTCROSS.AMPMCCheck = AMTRANHDR.AMTRHNumber

GROUP BY AMPMTCROSS.AMPMCItem

) AS TotalBalance ON T1.AMTRHNumber = TotalBalance.AMPMCItem'

SET @CharVariable = N'@Where, varchar(500)'

SET @IntVariable = N'@ADDIVNumber, bigint'

exec sp_executesql @SQLHolder, @IntVariable, @CharVariable



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