I am trying to create a proc and at the end of the proc I want to call another proc and pass to one of the parameters to proc using the result from the "OUTPUT". Is it possible to use the results from the "OUTPUT" and use them as parameters?
USE [MyDB]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
[code]....
Inside some TSQL programmable object (a SP/or a query in Management Studio)I have a parameter containing the name of a StoreProcedure+The required Argument for these SP. (for example it's between the brackets [])
EX1 : @SPToCall : [sp_ChooseTypeOfResult 'Water type']
EX2 : @SPToCall : [sp_ChooseTypeOfXMLResult 'TABLE type', 'NODE XML']
EX3 : @SPToCall : [sp_GetSomeResult]
I can't change thoses SP, (and i don't have a nice output param to cach, as i would need to change the SP Definition)All these SP 'return' a 'select' of 1 record the same datatype ie: NVARCHAR. Unfortunately there is no output param (it would have been so easy otherwise. So I am working on something like this but I 'can't find anything working
DECLARE @myFinalVarFilledWithCachedOutput
NVARCHAR(MAX);
DECLARE @SPToCall NVARCHAR(MAX) = N'sp_ChooseTypeOfXMLResult
''TABLE type'', ''NODE XML'';'
DECLARE @paramsDefintion = N'@CatchedOutput NVARCHAR(MAX) OUTPUT'
[code]...
I am able to perform my Stored Procedure, but I can't figure out how to get access to the OUTPUT parameters!Here is my code: Protected Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim mySqlDataSource As SqlDataSource = New SqlDataSource
mySqlDataSource.InsertCommandType = SqlDataSourceCommandType.StoredProcedure
mySqlDataSource.ConnectionString = "my connection string"
mySqlDataSource.InsertCommand = "MyStoredProc"
mySqlDataSource.InsertParameters.Add("someId", TypeCode.Int16, 166)
mySqlDataSource.InsertParameters.Add("someNumber", TypeCode.Int16, 4)
' Add Some Parameter
Dim someParameter As Parameter = New Parameter("someParameterName", TypeCode.String)
someParameter.DefaultValue = New String("Some Value")
someParameter.Direction = Data.ParameterDirection.Output
mySqlDataSource.InsertParameters.Add(someParameter)
mySqlDataSource.Insert()
End Sub
Any ideas as to how I get the new value that was "hopefully" assigned to someParameter??? Thanks for any help
Hi all,
From the "How to Call a Parameterized Stored Procedure by Using ADO.NET and Visual Basic.NET" in http://support.microsft.com/kb/308049, I copied the following code to a project "pubsTestProc1.vb" of my VB 2005 Express Windows Application:
Imports System.Data
Imports System.Data.SqlClient
Imports System.Data.SqlDbType
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim PubsConn As SqlConnection = New SqlConnection("Data Source=.SQLEXPRESS;integrated security=sspi;" & "initial Catalog=pubs;")
Dim testCMD As SqlCommand = New SqlCommand("TestProcedure", PubsConn)
testCMD.CommandType = CommandType.StoredProcedure
Dim RetValue As SqlParameter = testCMD.Parameters.Add("RetValue", SqlDbType.Int)
RetValue.Direction = ParameterDirection.ReturnValue
Dim auIDIN As SqlParameter = testCMD.Parameters.Add("@au_idIN", SqlDbType.VarChar, 11)
auIDIN.Direction = ParameterDirection.Input
Dim NumTitles As SqlParameter = testCMD.Parameters.Add("@numtitlesout", SqlDbType.Int)
NumTitles.Direction = ParameterDirection.Output
auIDIN.Value = "213-46-8915"
PubsConn.Open()
Dim myReader As SqlDataReader = testCMD.ExecuteReader()
Console.WriteLine("Book Titles for this Author:")
Do While myReader.Read
Console.WriteLine("{0}", myReader.GetString(2))
Loop
myReader.Close()
Console.WriteLine("Return Value: " & (RetValue.Value))
Console.WriteLine("Number of Records: " & (NumTitles.Value))
End Sub
End Class
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
The original article uses the code statements in pink for the Console Applcation of VB.NET. I do not know how to print out the output of ("Book Titles for this Author:"), ("{0}", myReader.GetString(2)), ("Return Value: " & (RetValue.Value)) and ("Number of Records: " & (NumTitles.Value)) in the Windows Application Form1 of my VB 2005 Express. Please help and advise.
Thanks in advance,
Scott Chang
What would be the correct synatx if I wanted to output the results of a stored to a file
instead of printing?
Hi,
I was wondering is there was is a way in SQL 2005 to not only email job completion notifications but also include the output of a step (e.g. TSQL step) within the email. I was able to accomplish this in the past with SQL 2000 by writing output to a file and then adding an extra CMDEXEC step that exectuted BLAT (CLI SMTP engine) that sent the contents of the output file as email body out of band. Although this worked and I can do the same with 2005 it is not very elegant and I was wondering if 2005 version might have something built-in.
Any thoughts?
Thank you,
-Ed
Hi everyone, can anyone help me please
I have a stored procedure that works quite well and returns one of the following codes, 1 2 3 or 4 which is dependant on business criteria. This sp works well and satsisfies all the criteria etc.
I am calling this SP in asp.net (c#) like this
using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["blah"].ConnectionString)) { int? intSQLCheck = null;
con.Open(); SqlCommand cmd = new SqlCommand("check_values", con); cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add(new SqlParameter("@param_clothing_id", this.DropDownList2.SelectedValue.ToString())); cmd.Parameters.Add(new SqlParameter("@empNo", this.DropDownList1.SelectedValue.ToString())); cmd.Parameters.Add(new SqlParameter("@createdBy", this.txtEmpNo.Text.ToString())); cmd.Parameters.Add(new SqlParameter("@price", this.txtPrice.Text)); cmd.Parameters.Add(new SqlParameter("@qty", this.txtQty.Text)); //cmd.Parameters.Add(new SqlParameter("@returnValue", 0)); cmd.Parameters.Add(new SqlParameter("@returnVal", 99)); cmd.Parameters["@returnVal"].Direction = ParameterDirection.Output;
cmd.ExecuteNonQuery();
What I would like to do know is use a variable intSqlCheck to hold the return value from the SP (and then do some processing of business logic using the variable)
Any ideas anyone please
Hi, I have a form with a detailsview and a sqldatasource. The sqldatasource uses a stored procedure as the select command. This stored procedure requires 2 input parameters and returns 3 output parameters. A button on the form is enabled or disabled depending on the value of the output parameters. When the page loads, I get a "Object reference not set to an instance of an object" message, caused by the null value of an output parameter. SQL Profiler shows that the input parameters are correct, and if I run the stored procedure directly, it's okay. Can anybody tell me why I wouldn't get the output parameters? Thanks,Neil
View 1 Replies View RelatedI am new to SQL and trying to work out how to do this
i have a table called projectAllocationLog with 4 fields, there can be many users of any particular project, ie
ID,projectID, User, Date
4 5000, 6, 10/02/2007
3 5000, 12, 08/07/2005
2 5004, 13, 08/05/2003
1 5000, 14, 04/05/2001
I want to write a stored proceedure that I can pass in the projectID, and return the most current user, this will always be the user with the highest ID for the project
ie for project 5000 it will be user 6
I was thinking along the lines of for each project select the top 1 from the table. where I can pass in the projectID, and pass out the ID field of the table. i am just not sure how to start this.
Any help would be appreciated.
I am trying to select multiple values from the row with the max id,and output them within my stored procedure. How would I combine thefollowing two rows so that I only need to use "from mytable whereIDnum = (select (max(IDnum)) from mytable))" once. I have at least 8other outputs I will be setting and would like this to work moreefficiently than setting each individually... if possible.set @outmtd = (select outmtd from mytable where IDnum = (select(max(IDnum)) from mytable))set @outytd = (select outytd from mytable where IDnum = (select(max(IDnum)) from mytable))Thanks for any help you can giveMatt
View 3 Replies View Relatedhow do i include output parameters from a stored procedure into a report?
View 2 Replies View RelatedHello, I have been working around this issue, but couldn't yet find any solution.I have a stored procedure that calls a method to do a certain repetitive work.In this function, I have a dynamic query, which means, that I am concatinating commands to the query depending on the input of the function.for example, there is an input for a function called "Id"Inside the function, if Id = 111I need to add " and ID <> 1" and if Id has another value I need to add " and ID = c.ID" something like that.Now, inside the function, I need to return a value by executing the above @SQLString as follows:EXEC @SQLStringWhen I need is something likeEXEC @SQLString, @Total OutputReturn (@Total)Are there any ideas ?regards
View 1 Replies View RelatedI have come across manual queries being run daily and the results saved to a txt file on the network.
I basically want to set run these up a stored procedure and set up as a scheduled task to run daily.
Does anyone know if you can automatically save the results of a query/stored procedure to a text file on a network??
Many Thanks..
Hi All !Is it possible to get rid of these dash symbols which are underliningthe column name when recordset is returned after query execution ?For example, using isql.exe:SELECT 'blah'goproduces the following results:----blahWhat I want to achieve is justblahI know that SET NOCOUNT ON switches the "X row affected" thing. Buthow about column headers ?Thanks for your time,Seeker
View 5 Replies View RelatedHi all,I have a stored procedure which sets an output variable. How could I access this after calling an SqlDataSource.Select()? ThanksChris
View 9 Replies View RelatedHello, i got this working using vb.net but becuase I'm learning asp.net I thought it would be a ggood idea to replicate the same function using C# as well1
The problem is I receive an output parameter through a stored procedure which is the users id.
I want to add this to a cookie as I know I'll be using it again and again, but the error I keep getting is cannot cxonvert type 'string' to type 'int'.
I've tried using conversion functions to make the value returned into an int value but I had no success!
I did this -
int id = (int)mycommand.Parameters["@id"].Value;
and then try to save that to the cookie but the error keeps appearing, I've also tried using the parse and ToInt32 function but the same/similar problems - any ideas?
Thanks
Hi all,Is there a data transfer difference between returning a datareader that only has one row or using output parameters? For instance, I have a login page that shows the last login, member since, display level, number of file views, etc. Currently I am returning a datareader that reads one row and assigns this data to labels. But would it be quicker to use OUTPUT parameters instead of using a dataread and just get the values from the command object?ThanksJosh
View 3 Replies View RelatedWhen I call a proc with one input parameter and two output parameters, (all the three parameters having defaults in the proc), I was expecting to see these values defaulted to in the proc. But apparently, this not the case. Could someone tell me what am I doing wrong here? Appreciate your time.
USE Pubs
GO
CREATE PROCEDURE dbo.MyTestProc
(@InputParamVARCHAR(30) = 'Input',
@OutPutParam1VARCHAR(30) = 'OutputParam1' OUTPUT,
@OutPutParam2VARCHAR(30) = 'OuputParam2' OUTPUT)
AS
BEGIN
SELECT @InputParam, @OutPutParam1, @OutPutParam2
END
GO
-- Call to the proc
USE Pubs
GO
DECLARE @I1VARCHAR(30)
DECLARE @P1VARCHAR(30)
DECLARE @P2VARCHAR(30)
SET@I1 = 'PassedInput'
EXECdbo.MyTestProc
@I1,
@P1 OUTPUT,
@P2 OUTPUT
SELECT@I1, @P1, @P2
EXEC dbo.MyTestProc
Hi can any one explain why when I specify an outparameter as a string I only get back the first letter of the string when I call the procedure from .net?
my procedure is...
ALTER PROCEDURE dbo.UpdateUserPACSPASDetails
@UserGUID uniqueidentifier,
@UserPACSName varchar(32),
@PASName varchar(32),
@UserPACSPassword varchar(95),
@UserPACSPasswordIV varchar(95),
@UserFriendlyName varchar(32),
@Message varchar(32) OUTPUT,
@MessageNumber int OUTPUT
AS
SET NOCOUNT ON
DECLARE @tmpGUID as uniqueidentifier /*stores the temp guid from the function */
DECLARE @ReturnDomainName as varchar(32) /*stores the tmp domainname of the user who has the PACS name */
SET @Message=CAST('' as varchar(32))
SET @MessageNumber= 0
/* first check if PACS user name already exists or not */
SET @tmpGUID = dbo.fncFindPACSName(@UserPACSName)
IF @tmpGUID IS NOT NULL /* if the value is null the the PACSusername doesn't exist
if its not null then does the current user already own that PACSUserName? */
BEGIN
/*if the users ids are different then another user already has the PACS name */
IF @tmpGUID<>@UserGUID
BEGIN
SELECT @ReturnDomainName = UserDomainName FROM tblUsers WHERE UserGUID=@tmpGUID
SET @Message=@ReturnDomainName
SET @MessageNumber = 1
RETURN
END
END
/*now check the PAS name to see if it exists or is already in use by someone else
first check if PACS user name already exists or not */
SET @tmpGUID = dbo.fncFindPASName(@PASName)
IF @tmpGUID IS NOT NULL /* if the value is null the the PACSusername doesn't exist
if its not null then does the current user already own that PACSUserName? */
BEGIN
/*if the users ids are different then another user already has the PACS name */
IF @tmpGUID<>@UserGUID
BEGIN
SELECT @ReturnDomainName = UserDomainName FROM tblUsers WHERE UserGUID=@tmpGUID
SET @Message=@ReturnDomainName
SET @MessageNumber = 2
RETURN
END
END
UPDATE tblUsers
SET UserPACSName=@UserPACSName,UserPACSPassword=@UserPACSPassword,
UserPACSPasswordIV=@UserPACSPasswordIV, PASName=@PASName, UserFriendlyName=@UserFriendlyName
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
End Select
can somebody let me understand how this Output parameters works in sp_executesql / Dynamic TSQL
I want to store a integer value resulting from executing a dynamic query. I was trying to follow the syntax but to be honest I didn't get it, and resulted in err. So can somebody help me in understanding how it works and how and where to declare the variables to be output and what command does that Output etc.
Thanks a lot in advance
I'm trying to output all the values selected through a multivalue parameter, but I am having difficulties. In the text box, the parameter contains only four member functions (value, label, count, ismultivalue). However, to output a value or label for the parameter you need to specify an index in the form of:
Parameters!Names.Value(0)
Ideally, I would like to be able to obtain all these values with a function call, but it doesn't look like there is one. Any ideas of how to get all the values?
Thank you!!
I have a stored procedure that outputs an XML result. As it is right now, I will periodically go into SQL Server Mngmnt Studio and run the procedure, then save the XML output to an XML file that my website uses. The procedure takes too long run (it is recursive through the entire data set) to have the website call the procedure on its own, and wait for the results.
My question is this: Can I create a trigger that will run this stored procedure and save the results to a file? Is that possible? The trigger would call the procedure any time a specific table is updated (which will be a rare occurrence), then save the file to the path provided so the website users could always have the most up-to-date information without having long wait times caused by long waits for the procedure to run.
Any advice on how best to accomplish this will be appreciated.
Thanks in advance.
I have a dynamic database that will be periodically queried to selectthe data from a blob field. This blob data field is text of a variablelength. The data will be selected using an id field and a date range.There will be multiple blob fields returned that I would like to outputinto a txt file in a local folder.I have the blob fields showing up as text in the field and not areferring link. Can someone point me to an output to text solution?Thanks
View 1 Replies View Related
When I run my CLR/C# stored procedure inside Visual/BI Dev Studio, the results in a datatable are sent over pipe and displayed in output window without the grid format. I looked up inOptions and settings but couldn't find a way to change the format of output window to grid. I would like to be able to do that so I can copy/paste the results in excel.
i built a stored procedure with inserting in to customers table.
i have one column with identity.
so want to take that identity column value in the same stored procedure.
so how can i write that procedure with insert in to statements in that stored procedures.
can any one tell me.
also how to get that value in ado.net 2.0.
friends please tell me.
Hi,
thanks for reading!
Here is my problem: I have a strored procedure that inserts some records
into one table and then selects some records from another table at the end.
The stored procedure takes several parameters, first one of them is marked as
OUTPUT. I'm using it to return an id of the inserted record. The procedure is called from asp.net code with first parameter set as ParameterDirection.InputOutput (tried with just Output as well). Now for the problem: if the the select statement at the end returns 0 records everything works and i my first parameter contains the @@IDENTITY value from the insert statement like it is supposed to.
If the select statement at the end returns 1 or more records my output parameter is not updated at all and contains the same value as before the procedure was run. All the records are inserted correctly.
if i try to return the @@identity as a plain select statement instead of through the parameter
i get System.DBNull.
I hope you can shed some light on this for me. Here is my stored procedure:
CREATE PROCEDURE cwSaveProductInquiry
@inquiryId int OUTPUT,
@libraryName nvarchar(500),
@contactName nvarchar(200),
@address nvarchar(100),
@city nvarchar(50),
@state nvarchar(3),
@zip nvarchar(10),
@phone nvarchar(50),
@email nvarchar(100),
@comment nvarchar(3000),
@productIds nvarchar(2000)
AS
INSERT INTO INQUIRY (LibraryName, ContactName, Address, City, State, Zip, Phone, Email, Comment) VALUES(@libraryName, @contactName, @address, @city, @state, @zip, @phone, @email,@comment)
--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)
INSERT INTO PRODUCT_INQUIRY_LOOKUP (ProductId,InquiryId) VALUES(@objectId, @inquiryId)
select @productIds = stuff(@productIds, 1, @separator_position, '')
end
end
set nocount off
Select Distinct Email from vPRODUCT_CONTACT WHERE ProductId in
(Select ProductId From Product_Inquiry_Lookup Where InquiryId=@inquiryId)
GO
Hi
I've an existing SQL 2000 Stored Procedure that return data in many (~20) output parameters.
I'm starting to use it in a .Net c# application and it seems to insist that I setup all the output parameters:
SqlParameter param = cmd.Parameters.Add("@BackgroundColour",SqlDbType.TinyInt);
param.Direction=ParameterDirection.Output;
even if I only need the value of a single one.
Is this right? Is there a way to avoid coding every one every time?
EXEC('SELECT COUNT(docid) AS Total FROM docs WHERE ' + @QueryFilter)I want to get the cound as an output parameter.I can get output parameters to work only when I dont use EXEC. I need to use EXEC for this case since @QueryFilter gets generated in the stored procedure based on some some other data.How can I get that count using ouput parameter?
View 2 Replies View RelatedI am using SqlDataSource programmatically in my data access layer - mainly for convenience but it does generally work fine with no obvious performance issues.
The problem I have is with getting back an output parameter. I have an insert-type stored procedure (in Sql Server 2005) operating on a table with an identity column as the primary key:
ALTER PROCEDURE [dbo].[InsertAlbum](@ArtistID int, @Title nvarchar(70), @NewID int OUTPUT)ASDECLARE @err intINSERT INTO dbo.ALBUMS (ARTISTID, TITLE)VALUES (@ArtistID, @Title)SELECT @err = @@error IF @err <> 0 RETURN @errSET @NewID = SCOPE_IDENTITY()
This works fine when run from Sql Server Management Studio and @NewID has the correct value.
My data access code is roughly as follows:
dsrc = New SqlDataSource()dsrc.ConnectionString = ConnectionStringdsrc.InsertCommand = "InsertAlbum"dsrc.InsertCommandType = SqlDataSourceCommandType.StoredProcedureDim parms As ParameterCollection = dsrc.InsertParametersDim newid As IntegerAddParameter(parms, "ArtistID", TypeCode.Int32, ParameterDirection.Input, 0, album.ArtistID)AddParameter(parms, "Title", TypeCode.String, ParameterDirection.Input, 0, album.Title)Dim p As New Parameter("NewID", TypeCode.Int32)p.Direction = ParameterDirection.Outputparms.Add(p)Try Dim rv As Integer = dsrc.Insert() newid = parms("NewID") Return newidCatch ex As Exception Return -1End Try
The row is inserted into the database, but however I try to define and add the NewID parameter it never has a value.
Has anyone tried to do this and can tell me what I am doing wrong?
Jon
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
The dynamic SQL statements with output parameters, unfortunately, in the documentation are not described.
À) Simple example of the dynamic SQL statement with output parameters
-- dynamic SQL statements expects parameter of type 'ntext/nchar/nvarchar'.
declare @SQLString nvarchar(4000), @ParmDefinition nvarchar(4000)
-- the third parameter passed in the dynamic statement as by output, returns the length of
-- the hypotenuses of a right triangle, two first parameters are lengths of legs of a triangle
declare @nHypotenuse float
select @SQLString = 'select @nHypotenuse = sqrt(square(@nLeg1_of_a_triangle)+square(@nLeg2_of_a_triangle))',
@ParmDefinition = '@nLeg1_of_a_triangle float, @nLeg2_of_a_triangle float, @nHypotenuse float out'
-- we call the dynamic statement in such a way
exec sp_executesql @SQLString, @ParmDefinition, @nLeg1_of_a_triangle = 3.0, @nLeg2_of_a_triangle = 4.0, @nHypotenuse = @nHypotenuse out
-- or in such a way
exec sp_executesql @SQLString, @ParmDefinition, 3.0, 4.0, @nHypotenuse out
select @nHypotenuse -- Displays 5.0
B) Example of usage of the dynamic statement with output parameter and the function GETALLWORDS.
The following stored procedure get all words from a field of the type text or ntext, the word length should not exceed 4000 characters.
CREATE PROCEDURE SP_GETALLWORDSFROMTEXT
@TableName sysname, @FieldIdName sysname, @FieldIdValue sql_variant, @FieldTextName sysname, @cDelimiters nvarchar(256) = NULL
AS
-- this Stored procedure inserts the words from a text field into the table.
-- WORDNUM int – Sequence number of a word
-- WORD nvarchar(4000) – the word
-- STARTOFWORD int – position in the text field, with which the word starts
-- 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
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
declare @instrumentid int
exec GetInstrumentId 'OFX,AUDCHF,p,1,2007-03-20 16:54:21.843,2007-06-20,100.1', @instrumentid output;
select @instrumentid
exec GetInstrumentId 'OFX,AUDUSD,c,2,2007-03-20 16:54:21.843,2007-06-20,100.2', @instrumentid output;
select @instrumentid
exec GetInstrumentId 'OFX,AUDCHF,p,3,2007-03-20 16:54:21.843,2007-06-20,100.3', @instrumentid output;
select @instrumentid
end
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
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
--stored procedure, which returns a list of products that have
--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
CREATE PROCEDURE Production.uspGetList @Product varchar(40)
, @MaxPrice money
, @ComparePrice money OUTPUT
, @ListPrice money OUT
AS
SELECT p.[Name] AS Product, p.ListPrice AS 'List Price'
FROM Production.Product AS p
JOIN Production.ProductSubcategory AS s
ON p.ProductSubcategoryID = s.ProductSubcategoryID
WHERE s.[Name] LIKE @Product AND p.ListPrice < @MaxPrice;
-- Populate the output variable @ListPprice.
SET @ListPrice = (SELECT MAX(p.ListPrice)
FROM Production.Product AS p
JOIN Production.ProductSubcategory AS s
ON p.ProductSubcategoryID = s.ProductSubcategoryID
WHERE s.[Name] LIKE @Product AND p.ListPrice < @MaxPrice);
-- Populate the output variable @compareprice.
SET @ComparePrice = @MaxPrice;
GO
--- USE
DECLARE @ComparePrice money, @Cost money
EXECUTE Production.uspGetList '%Bikes%', 700,
@ComparePrice OUT,
@Cost OUTPUT
IF @Cost <= @ComparePrice
BEGIN
PRINT 'These products can be purchased for less than
$'+RTRIM(CAST(@ComparePrice AS varchar(20)))+'.'
END
ELSE
PRINT 'The prices for all products in this category exceed
$'+ RTRIM(CAST(@ComparePrice AS varchar(20)))+'.'
----------------------
--- 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.