use @strAll in SQL/vb.net

In the code below, what I am trying to do is to determine what the value of str_All should be. And then trying to set @strAll = str_All so that I could use it in my SQL.

Question: How can I do something like this?
Dim str_All As String
If chkCustomersWithOrders.Checked Then
         str_All = "(have orders)"
Else
         str_All = "(some have orders)"
End If

 @strAll =str_All
 SQL.ExecQuery("SELECT CustomerID, substring(FirstName + ' ' + LastName + '                                                     ',1,50) +" & " dbo.fnHasOrders (CustomerID) as CustName From tblCustomers Union" & _
  " SELECT '99999', '<All>' + @strAll  From tblCustomers")

Open in new window

LVL 34
Mike EghtebasDatabase and Application DeveloperAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Haris DulicIT ArchitectCommented:
Hi,

do you really need to pass the value strAll to @strAll, you can use it like this..

Dim str_All As String
If chkCustomersWithOrders.Checked Then
         str_All = "(have orders)"
Else
         str_All = "(some have orders)"
End If

 @strAll =str_All
 SQL.ExecQuery("SELECT CustomerID, substring(FirstName + ' ' + LastName + '                                                     ',1,50) +" & " dbo.fnHasOrders (CustomerID) as CustName From tblCustomers Union" & _
  " SELECT '99999', '<All>' + " & strAll & "  From tblCustomers")

Open in new window

ste5anSenior DeveloperCommented:
Use a parameterized query.

btw, please post concise and complete samples. What kind of type is SQL?

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Mike EghtebasDatabase and Application DeveloperAuthor Commented:
samo4fun,

Just because I wanted to see how it is done via parameter, I was trying to use @strAll.


ste5an,

Yes, I should have mentioned SQLEXPRESS12

Mike
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft SQL Server

From novice to tech pro — start learning today.