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Optimize Parametrized Queries With ADO Objects

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When you write Insert statements, it can be difficult to accommodate the possible values end users might enter into a textbox. The most common task is replacing single quotes with double quotes. However, parameterized queries provide two benefits: You do not have to parse data entered by users—except for business rules; and SQL Server immediately caches the SQL statement:

Click here to copy the following block
Dim cmd As ADODB.Command
Dim prm As ADODB.Parameter
Set cmd = New ADODB.Command
Set prm = New ADODB.Parameter
With cmd
   .ActiveConnection = CONNECT_STRING
   .CommandText = "INSERT INTO employees " & _
       "(name) VALUES(?)"
   .CommandType = adCmdText
   Set prm = .CreateParameter(, adChar, _
       adParamInput, 50, Me.txtName.Text)
   .Parameters.Append prm
   .Execute
End With
Set cmd = Nothing
Set prm = Nothing


Submitted By : Nayan Patel  (Member Since : 5/26/2004 12:23:06 PM)

Job Description : He is the moderator of this site and currently working as an independent consultant. He works with VB.net/ASP.net, SQL Server and other MS technologies. He is MCSD.net, MCDBA and MCSE. In his free time he likes to watch funny movies and doing oil painting.
View all (893) submissions by this author  (Birth Date : 7/14/1981 )


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