@@Rowcount Or Output Parameters Error

Dec 12, 2005

I have the following stored procedure working with an Access 2000 front end. The output parameters returned to Access are both Null when the record is successfully updated (ie when @@Rowcount = 1), but the correct parameters are returned when the update fails. I'm a bit new to using output parameters, but I have them working perfectly with an insert sproc, and they look basically the same. What bonehead error have I made here? The fact that the record is updated indicates to me that the Commit Trans line is being executed, so why aren't the 2 output parameters set?

TIA

EDIT: Solved, sort of. I found that dropping the "@ResNum +" from "@ResNum + ' Updated'" resolved the problem (@ResNum is an input parameter). This implies that the variable lost its value between the SQL statement and the If/Then, since the SQL correctly updates only the appropriate record from the WHERE clause. Is this supposed to happen? I looked in BOL, and if it's addressed there I missed it.

CREATE PROCEDURE [procResUpdate]

Various input parameters here,

@RetCode as int Output, @RetResNum as nvarchar(15) Output

AS

Declare @RowCounter int

Begin Tran

UPDATE tblReservations
SET Various set statements here, LastModified = @LastModified + 1
WHERE ResNum = @ResNum AND LastModified = @LastModified

SELECT @RowCounter = @@ROWCOUNT

If @RowCounter = 1
Begin
Commit Tran
Select @RetCode = 1
Select @RetResNum = @ResNum + ' Updated'
End
Else
Begin
Rollback Tran
Select @RetCode = 0
Select @RetResNum = 'Update Failed'
End
GO

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@@RowCount Output Param

Sep 6, 2007

The following stored procedure sets a value for the @@RowCount global variable.
How do I make use of it in the Data Access Layer?
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@selectDate datetime
,@selectCountry Int
AS

SELECT DISTINCT configname FROM ModelRequests JOIN
CC_host.dbo.usr_cmc As t2 ON
t2.user_id = ModelRequests.username JOIN
Countries ON
Countries.Country_Short = t2.country
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GO 

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[code]...

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Hi all,
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Imports System.Data.SqlClient

Imports System.Data.SqlDbType

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Do While myReader.Read

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Loop

myReader.Close()

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End Sub

End Class

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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Thanks in advance,
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GO

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AS
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END
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GO

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my procedure is...

ALTER PROCEDURE dbo.UpdateUserPACSPASDetails
@UserGUID uniqueidentifier,
@UserPACSName varchar(32),
@PASName varchar(32),
@UserPACSPassword varchar(95),
@UserPACSPasswordIV varchar(95),
@UserFriendlyName varchar(32),
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AS

SET NOCOUNT ON

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RETURN

END
END

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first check if PACS user name already exists or not */
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IF @tmpGUID<>@UserGUID
BEGIN
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RETURN

END
END




UPDATE tblUsers
SET UserPACSName=@UserPACSName,UserPACSPassword=@UserPACSPassword,
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WHERE UserGUID=@UserGUID

SET @Message=CAST('' as varchar(32))
SET @MessageNumber=3

RETURN

I call this proc via a vb.net program using a command.executenonquery and then look at the parameter.

For some reason I only get the first letter of the string back! i.e. if the string is LSDNET/nik I get 'L'.

If I run the proc from visual studio step in to procecure it works fine!

the vb I'm using is... (the createaddparameter simply creates a bunch of parameters to add to a command -with the specified names and dbtypes).

I'm obviously missing a trick but what it is I can't see.
I seem to be able to pass all other data types back easily!

Dim LoadUserCommand As New SqlCommand

'create add command
Dim CreateAddParameter() As String = {"@UserGUID", _
"@UserPACSName", "@PASName", "@UserPACSPassword", _
"@UserPACSPasswordIV", "@UserFriendlyName", "@Message", "@MessageNumber"}
Dim UpdateDBTypes() As DbType = {DbType.Guid, DbType.StringFixedLength, DbType.StringFixedLength, DbType.StringFixedLength, _
DbType.StringFixedLength, DbType.StringFixedLength, DbType.StringFixedLength, DbType.Int32}


LoadUserCommand = lclSQLHelper.CreateOLEDBCommand("UpdateUserPACSPASDetails", CreateAddParameter, UpdateDBTypes, lclDBConn.DBConnection)

LoadUserCommand.Parameters(6).Direction = ParameterDirection.Output
LoadUserCommand.Parameters(7).Direction = ParameterDirection.Output

'update the data in the data table in the database

LoadUserCommand.Parameters(0).Value = lclUser.UserGUID
LoadUserCommand.Parameters(1).Value = lclUser.UserPACSName
LoadUserCommand.Parameters(2).Value = lclUser.UserPASName
LoadUserCommand.Parameters(3).Value = lclUser.UserPACSPassword
LoadUserCommand.Parameters(4).Value = lclUser.PACSPasswordIV
LoadUserCommand.Parameters(5).Value = lclUser.UserFriendlyName
LoadUserCommand.Parameters(6).Value = ""
LoadUserCommand.Parameters(7).Value = 0

Try

Dim lclRet As Integer = LoadUserCommand.ExecuteNonQuery()

Dim tmpDomainName As String
tmpDomainName = LoadUserCommand.Parameters(6).Value.ToString 'read the name back

Dim tmpMsgNumber = LoadUserCommand.Parameters(7).Value 'read the message number back

Select Case tmpMsgNumber 'not written yet as I haven't got this far!!!
Case 1 'pacs username already exists
Case 2 'pas username already exists
Case 3 'execute fine and all names updated



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Hi,

thanks for reading!

Here is my problem: I have a strored procedure that inserts some records

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--i tried including this statement at the end as well but that did not do the

--trick either

select @inquiryId=@@IDENTITY FROM INQUIRY





set nocount on
declare @separator_position int -- This is used to locate each separator character
declare @objectId varchar(200) -- this holds each array value as it is returned

if(@productIds is not null)
begin
while patindex('%,%' , @productIds) <> 0
begin
select @separator_position = patindex('%,%' , @productIds)
select @objectId= left(@productIds, @separator_position - 1)
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GO

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-- LENGTHOFWORD smallint – length of the word
-- Parameters
-- @TableName name of the table with the text or ntext field
-- @FieldIdName name of Id field
-- @FieldIdValue value of Id field
-- @FieldTextName name of field text or ntext
-- @cDelimiters Specifies one or more optional characters used to separate words in the text field
begin
set nocount on

declare @k int, @wordcount int, @nBegSubString int, @nEndSubString int, @nEndString int, @divisor tinyint, @flag bit, @RetTable bit,
@cString nvarchar(4000), @TypeField varchar(13), @SQLString nvarchar(4000), @ParmDefinition nvarchar(500), @nBegSubString1 smallint, @nEndSubString1 smallint
select @TableName = object_name(object_id(lower(ltrim(rtrim(@TableName))))), @FieldIdName = lower(ltrim(rtrim(@FieldIdName))), @FieldTextName = lower(ltrim(rtrim(@FieldTextName))),
@cDelimiters = isnull(@cDelimiters, nchar(32)+nchar(9)+nchar(10)+nchar(13)), -- if no break string is specified, the function uses spaces, tabs, carriage return and line feed to delimit words.
@nBegSubString = 1, @nEndSubString = 4000, @flag = 0, @RetTable = 0, @wordcount = 0

-- If the temporary table is not created in the calling procedure, we create the temporary table
if object_id( 'tempdb..#GETALLWORDSFROMTEXT') is null
begin
create table #GETALLWORDSFROMTEXT (WORDNUM int, WORD nvarchar(4000), STARTOFWORD int, LENGTHOFWORD smallint)
select @RetTable = 1
end
-- we use the dynamic SQL statement to receive the exact name of text field
-- as we can write names of fields by a call of the given stored procedure in the arbitrary register
-- in the string of parameters definition @ParmDefinition we use a keyword output
-- and by a call of the dynamic SQL statement exec sp_executesql @SQLString, @ParmDefinition, @FieldTextName = @FieldTextName output
-- Also we use a keyword output for definite before parameter
select @SQLString = 'select @FieldTextName = name from syscolumns where id = OBJECT_ID('''+ @TableName+''') and lower(name) = '''+@FieldTextName+''''
select @ParmDefinition = '@FieldTextName sysname output'
exec sp_executesql @SQLString, @ParmDefinition, @FieldTextName = @FieldTextName output

-- we use the dynamic SQL statement to receive the exact name of Id field
select @SQLString = 'select @FieldIdName = name from syscolumns where id = OBJECT_ID('''+ @TableName+''') and lower(name) = '''+@FieldIdName+''''
select @ParmDefinition = '@FieldIdName sysname output'
exec sp_executesql @SQLString, @ParmDefinition, @FieldIdName = @FieldIdName output

-- we use the dynamic SQL statement to receive the type of field (text or ntext)
select @SQLString = 'select @TypeField = name from systypes where xtype = any ( select xtype from syscolumns where id = OBJECT_ID('''+ @TableName+''') and lower(name) = '''+@FieldTextName+''')'
select @ParmDefinition = '@TypeField varchar(13) output'
exec sp_executesql @SQLString, @ParmDefinition, @TypeField = @TypeField output

select @divisor = case @TypeField when 'ntext' then 2 else 1 end -- 2 for unicode

-- we use the dynamic SQL statement to receive a length of the text field
select @SQLString = 'select @nEndString = 1 + datalength('+ @FieldTextName+')/'+cast( @divisor as nchar(1)) +' from '+@TableName +' where '+ @FieldIdName+' = ' +cast(@FieldIdValue as nchar(50))
select @ParmDefinition = '@nEndString int output'
exec sp_executesql @SQLString, @ParmDefinition, @nEndString = @nEndString output

-- We cut the text field into substrings of length no more than 4000 characters and we work with substrings in cycle
while 1 > 0
begin
-- we use the dynamic SQL statement to receive a substring of a type nvarchar(4000) from text field
select @SQLString = 'select @cString = substring('+ @FieldTextName+','+cast( @nBegSubString as nvarchar(20)) +',' +
cast( @nEndSubString - @nBegSubString + 1 as nvarchar(20))+') from '+@TableName +' where '+ @FieldIdName+' = ' +cast(@FieldIdValue as nchar(50))
select @ParmDefinition = '@cString nvarchar(4000) output'
exec sp_executesql @SQLString, @ParmDefinition, @cString = @cString output

select @nBegSubString1 = 1, @nEndSubString1 = @nEndSubString - @nBegSubString +1

while charindex(substring(@cString, @nBegSubString1, 1) COLLATE Latin1_General_BIN, @cDelimiters COLLATE Latin1_General_BIN) > 0 and @nEndSubString >=@nBegSubString -- skip the character not in word, if any
select @nBegSubString = @nBegSubString + 1 , @nBegSubString1 = @nBegSubString1 + 1

while charindex(substring(@cString, @nEndSubString1, 1) COLLATE Latin1_General_BIN, @cDelimiters COLLATE Latin1_General_BIN) = 0 and @nEndSubString >=@nBegSubString -- skip the character in word, if any
select @nEndSubString = @nEndSubString - 1, @nEndSubString1 = @nEndSubString1 - 1

if @nEndSubString >=@nBegSubString
begin
select top 1 @wordcount = WORDNUM from #GETALLWORDSFROMTEXT order by WORDNUM desc
select @cString = substring(@cString, @nBegSubString1, @nEndSubString1-@nBegSubString1+1)
-- we use a function GETALLWORDS which one works with strings of a type nvarchar(4000)
-- we add outcome result in the temporary table
insert into #GETALLWORDSFROMTEXT (WORDNUM, WORD, STARTOFWORD, LENGTHOFWORD)
select (@wordcount+WORDNUM), WORD, (@nBegSubString+STARTOFWORD-1), LENGTHOFWORD from dbo.GETALLWORDS(@cString, @cDelimiters)

select @nBegSubString = @nEndSubString + 1, @nEndSubString = @nEndSubString + 4000
end
else
select @nEndSubString = @nEndSubString + 4000 -- In a case if the substring consists of one delimiter

if @flag = 1
break
if @nEndString <= @nEndSubString
select @flag = 1, @nEndSubString = @nEndString
end

-- If in a calling procedure the table was not created, we show the result
if @RetTable = 1
select * from #GETALLWORDSFROMTEXT

end
GO



Example of the call Stored procedure SP_GETALLWORDSFROMTEXT


declare @cDelimiters nvarchar(256)
select @cDelimiters = '"-,.:!?«»()'+SPACE(1)+CHAR(9)+CHAR(10)+CHAR(13)+CHAR(12)

if object_id( 'tempdb..#GETALLWORDSFROMTEXT') is not null
drop table #GETALLWORDSFROMTEXT
create table #GETALLWORDSFROMTEXT (WORDNUM int, WORD nvarchar(4000), STARTOFWORD int, LENGTHOFWORD smallint)
exec dbo.SP_GETALLWORDSFROMTEXT 'Your Table name', 'Your Id field name', Value of Id field, ' text or ntext field name', @cDelimiters

if object_id( 'tempdb..#GETALLWORDSFROMTEXT') is not null
select * from #GETALLWORDSFROMTEXT



-- GETALLWORDS() User-Defined Function Inserts the words from a string into the table.
-- GETALLWORDS(@cString[, @cDelimiters])
-- Parameters
-- @cString nvarchar(4000) - Specifies the string whose words will be inserted into the table @GETALLWORDS.
-- @cDelimiters nvarchar(256) - Optional. Specifies one or more optional characters used to separate words in @cString.
-- The default delimiters are space, tab, carriage return, and line feed. Note that GETALLWORDS( ) uses each of the characters in @cDelimiters as individual delimiters, not the entire string as a single delimiter.
-- Return Value table
-- Remarks GETALLWORDS() by default assumes that words are delimited by spaces or tabs. If you specify another character as delimiter, this function ignores spaces and tabs and uses only the specified character.
-- Example
-- declare @cString nvarchar(4000)
-- set @cString = 'The default delimiters are space, tab, carriage return, and line feed. If you specify another character as delimiter, this function ignores spaces and tabs and uses only the specified character.'
-- select * from dbo.GETALLWORDS(@cString, default)
-- select * from dbo.GETALLWORDS(@cString, ' ,.')
-- See Also GETWORDNUM() , GETWORDCOUNT() User-Defined Functions
CREATE function GETALLWORDS (@cString nvarchar(4000), @cDelimiters nvarchar(256))
returns @GETALLWORDS table (WORDNUM smallint, WORD nvarchar(4000), STARTOFWORD smallint, LENGTHOFWORD smallint)
begin
declare @k smallint, @wordcount smallint, @nEndString smallint, @BegOfWord smallint, @flag bit

select @k = 1, @wordcount = 1, @BegOfWord = 1, @flag = 0, @cString = isnull(@cString, ''),
@cDelimiters = isnull(@cDelimiters, nchar(32)+nchar(9)+nchar(10)+nchar(13)), -- if no break string is specified, the function uses spaces, tabs, carriage return and line feed to delimit words.
@nEndString = 1 + datalength(@cString) /(case SQL_VARIANT_PROPERTY(@cString,'BaseType') when 'nvarchar' then 2 else 1 end) -- for unicode

while 1 > 0
begin
if @k - @BegOfWord > 0
begin
insert into @GETALLWORDS (WORDNUM, WORD, STARTOFWORD, LENGTHOFWORD) values( @wordcount, substring(@cString, @BegOfWord, @k-@BegOfWord), @BegOfWord, @k-@BegOfWord ) -- previous word
select @wordcount = @wordcount + 1, @BegOfWord = @k
end
if @flag = 1
break

while charindex(substring(@cString, @k, 1) COLLATE Latin1_General_BIN, @cDelimiters COLLATE Latin1_General_BIN) > 0 and @nEndString > @k -- skip break characters, if any
select @k = @k + 1, @BegOfWord = @BegOfWord + 1
while charindex(substring(@cString, @k, 1) COLLATE Latin1_General_BIN, @cDelimiters COLLATE Latin1_General_BIN) = 0 and @nEndString > @k -- skip the character in the word
select @k = @k + 1
if @k >= @nEndString
select @flag = 1
end
return
end

For more information about string UDFs Transact-SQL please visit the

http://www.universalthread.com/wconnect/wc.dll?LevelExtreme~2,54,33,27115

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Hi,

I hope someone can help.

I've written a stored procedure that returns a value via an output parameter.

I'm calling the stored procedure in an sql session is a loop, and it passes the value back correctly the first time, but all subsequent calls the output parameter appears to have the same value. I believe that I'm making some very basic mistake, but I can't work it out.

Here's how I'm calling the stored procedure several times
begin
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select @instrumentid
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And this is the start of the stored procedure

Create PROCEDURE [dbo].[GetInstrumentId]
(@Ticket varchar(250), @InstrumentId int output)
AS


If I call the stored procedure once it gives the corect output, if I call it several times the output parameter (@instrumentid ) never changes.








Sean

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Nov 19, 2006

Hi All,

The following is a code snippit. My main interests are the OUT and OUTPUT parameter keywords. One returns a single value, and the other seemingly a resultset. OUTPUT returns a single value, however OUT seems to return a list of values. Could I please get this confirmed?

Also, I cannot see how the value being returned by OUT is being iterated...

Any help on the obove two matters is appreciated.

Thank You

Chris

BEGIN SNIPPET----------------------------------------------------------------------------------------------------------



--The following example creates the Production.usp_GetList

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--prices that do not exceed a specified amount.

USE AdventureWorks;

GO

IF OBJECT_ID ( 'Production.uspGetList', 'P' ) IS NOT NULL

DROP PROCEDURE Production.uspGetList;

GO

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, @ListPrice money OUT

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JOIN Production.ProductSubcategory AS s

ON p.ProductSubcategoryID = s.ProductSubcategoryID

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JOIN Production.ProductSubcategory AS s

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GO

--- USE

DECLARE @ComparePrice money, @Cost money

EXECUTE Production.uspGetList '%Bikes%', 700,

@ComparePrice OUT,

@Cost OUTPUT

IF @Cost <= @ComparePrice

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PRINT 'These products can be purchased for less than

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ELSE

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

--- Partial Result Set

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

--Product List Price

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

--Road-750 Black, 58 539.99

--Mountain-500 Silver, 40 564.99

--Mountain-500 Silver, 42 564.99

--...

--Road-750 Black, 48 539.99

--Road-750 Black, 52 539.99

--

--(14 row(s) affected)

--

--These items can be purchased for less than $700.00.





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Hi All,

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USE [MyDB]
GO
SET ANSI_NULLS ON
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ex:
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I have written a simple C# console application that create my own Stored Procedures
the code is here
----------------------------------------------------------------------------

static void Main(string[] args)
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SqlConnection cn;
string strSql;
string strConnection;
SqlCommand cmd;
strConnection="server=(local);database=Northwind;integrated security=true;";
strSql="CREATE PROCEDURE spmahdi @CustomerID nchar(5) @counter int OUTPUT AS SELECT OrderID, OrderDate,RequiredDate,ShippedDate FROM Orders WHERE CustomerID = @CustomerID ORDER BY OrderID SET @counter=@@rowcount";
cn=new SqlConnection(strConnection);
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cmd=new SqlCommand(strSql,cn);
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}

------------------------------------------------------------------------------------
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I mean in creating the stored procedure
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There will be no errors
I use Visual Studio.NET 2003(full versoin)and MSDE(not Sql Server)
Could someone help me solve this problem?
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