How to fill textboxes when the data are retrieving from two tables?

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VB

I am trying to retrieve data from two tables to fill the textboxex when I'm click the Button Print but I got an error saying: Column 'UID' in where clause is ambiguous. I have two tables named tableProducts with Columns ProductID, ProductName, and ProductPrice AND tableQuantity with columns QuantityID and AvailableQuantity. Please help me.

Here are my codes.

SqlClientConn.Open()
        Dim SQLString As String = "SELECT ProductName,ProductPrice FROM tableProducts INNER JOIN tableQuantity ON tableProducts.ProductID = tableQuantity.QuantityID WHERE ProductID= '" & txtid.Text & "'"
        Dim mySqlDataAdapter As MySql.Data.MySqlClient.MySqlDataAdapter = New MySql.Data.MySqlClient.MySqlDataAdapter(SQLString, SqlClientConn)
        Dim ds As New DataSet
        mySqlDataAdapter.Fill(ds)
        If ds.Tables("tableProducts").Rows.Count > 0 Then
            txtname.Text = ds.Tables("ProductName").Rows(0).Item(0).ToString()
            txtprice.Text = ds.Tables("ProductPrice").Rows(0).Item(1).ToString()
            txtquantity.Text = ds.Tables("AvailableQuantity").Rows(0).Item(2).ToString()
           
        End If
        SqlClientConn.Close()

..

Posted 16-Apr-15 17:32pm

Kenjiro Aikawa

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Manoj Kumar Choubey · Answer 1 · 2015-04-16T18:17:00

You have two tables named
tableProducts with Columns ProductID, ProductName, and ProductPrice AND tableQuantity with columns QuantityID and AvailableQuantity. Please help me.

Question No . 1 You are selecting both columns from tableProducts then why you are running join query or your query incomplete .

Ok
following is the structure of query Please try

SQL

SELECT P.ProductName
,P.ProductPrice 
FROM tableProducts  P
INNER JOIN tableQuantity Q ON (P.ProductID = Q.QuantityID) 
WHERE P.ProductID=  txtid.Text