Microsoft KB Archive/202116

= HOW TO: Create a Parameterized Jet Stored Procedure using DDL in Access 2000 =

Article ID: 202116

Article Last Modified on 10/11/2006

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APPLIES TO


 * Microsoft Access 2000 Standard Edition

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This article was previously published under Q202116



Advanced: Requires expert coding, interoperability, and multiuser skills.

IN THIS TASK
SUMMARY
 * Creating a Stored Procedure



SUMMARY
This article shows you how to create a stored procedure in the Visual Basic Environment and, if needed, how to add a parameter to the existing stored procedure.

NOTE: Native stored procedures are new in Microsoft Access 2000. You cannot create and run stored procedures through the user interface. You must use the Visual Basic Environment with ActiveX Data Objects (ADO) or the Database Definition Language (DDL).

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Creating a Stored Procedure
The following steps show you how to create a stored procedure with a parameter and how to run it in the Visual Basic Environment:  In the sample database Northwind.mdb, create a new module called TestStoredProc. On the Tools menu, click References. In the list of available references, click to select (check) Microsoft ActiveX Data Objects 2.1 Library.  Type the following in the new module: Public Function CreateProc

Dim strProc As String

strProc = "Create Procedure qryCustByCity " & _ "(prmCity varchar) as " & _ "select * from Customers where City = prmCity"

CurrentProject.Connection.Execute strProc

End Function   In the Immediate window, type the following and press ENTER: ?CreateProc 

Steps 1 though 4 create a stored procedure called strProc, which queries for records whose city matches the parameter, prmCity. The remaining steps involve creating code that runs strProc and passes a parameter.

 Return to the module that you created in step 1.  Type the following code: Public Function RSFromParameterQuery(strCity As String)

Dim prm As ADODB.Parameter Dim cmd As ADODB.Command Dim rst As ADODB.Recordset

Set cmd = New ADODB.Command Set cmd.ActiveConnection = CurrentProject.Connection

cmd.CommandText = "qryCustByCity" cmd.CommandType = adCmdStoredProc

Set prm = cmd.CreateParameter("prmCity", adVarChar, _            adParamInput, Len(strCity))

prm.Value = strCity

cmd.Parameters.Append prm

Set rst = New ADODB.Recordset rst.Open cmd

Do Until rst.EOF Debug.Print rst(0), rst(1), rst(2) rst.MoveNext Loop

End Function </li>  In the Immediate window, type the following and press ENTER: ?RSFromParameterQuery("London") </li></ol>

In the Immediate window, you should see a listing of the customers in London.

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Additional query words: inf

Keywords: kbhowto kbhowtomaster kbprogramming KB202116

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