Relationship query / Trying to fill listView = ExecuteReader error

[Surka]

Access DB tables and fields:

• Users: ID_User, UserName
• Devices: ID_User, Device, WarrantyEnd

With a 1 to Many Relationship, by ID_User on both tables.

Example, of table and relationship:

table Devices:
ID_User--Device---WarrantyEnd
2----------Laptop---2016
2----------Monitor--2016
3----------Laptop---2016

table Users:
ID_User--UserName
2----------AAA
3----------BBB

I need to fill a listView list, and show 3 columns: UserName, Device and WarrantyEnd.

Here is the Query:

Code:

SELECT Users.UserName, Devices.Device, Devices.WarrantyEnd
FROM Users RIGHT JOIN Devices ON Users.ID_User = Devices.ID_User

As you can see, there is a relationship using RIGHT JOIN, by ID_User from both tables.

Using that query, I am trying to fill the listView with the following code:

Code:

'QUERY
strSQL = "SELECT Users.UserName, Devices.Device, Devices.WarrantyEnd FROM Users RIGHT JOIN Devices ON Users.ID_User = Devices.ID_User"

        cmd.Connection = connection
        cmd.CommandText = strSQL

        DataReader = cmd.ExecuteReader()

'While reading, it fills listView. Last command adds all the newItem read to the listView

        Do While DataReader.Read()

            Dim newItem As New ListViewItem(DataReader.Item(1).ToString)
            newItem .SubItems.Add(DataReader.Item(0).ToString)
            mainForm.listView.Items.Add(newItem )

        Loop

        DataReader.Close()

But debug, tells me theres an error on: DataReader = cmd.ExecuteReader(): No value given for one or more required parameters.

If I use an easier query it works: strSQL = "SELECT * FROM Devices"

Am I missing something on the query?

Thanks.

 

[Surka]

I got the answer on another vb forum. It was a type error on SQL statement.