水晶報表和sql命令

Question

我在顯示水晶報表中聯接表中的數據內容時遇到問題，我的sql查詢很好，它顯示了我自己的數據，但是當我填充水晶報表數據源並向其顯示水晶重復項時，我的代碼是：

 Dim rep As CrystalReport1 = New CrystalReport1()
Dim objcon = New SqlConnection("data source=(local);initial catalog=hesabres;user id='sa';password='Maysam7026'")
Dim objcom = New SqlCommand
Dim objdata As New DataTable
Dim objdr As SqlDataReader
objcom.CommandText = " SELECT customer.customer_name, customer.customer_tel, orders.order_stuff_name, orders.order_number" & _ " FROM   hesabres.dbo.orders orders inner JOIN hesabres.dbo.customer customer ON orders.order_customer_id=customer.customer_id"


objcom.Connection = objcon
objcon.Open()
objdr = objcom.ExecuteReader
objdata.Load(objdr)
rep.SetDataSource(objdata)
CrystalReportViewer1.ReportSource = rep

實際上可能買了一把椅子和球，賈漢買了一個球！

Answer 1

Crystal報表本身不顯示任何數據。

如果您的數據庫查詢結果很好，那么它們就是他們的代碼。

我建議您詳細檢查您的代碼。

在select語句中應用不同的關鍵字，如下所示，然后進行檢查

    SELECT Distinct customer.customer_name, customer.customer_tel, 
orders.order_stuff_name, orders.order_number" & _ " 
FROM   hesabres.dbo.orders orders 
inner JOIN hesabres.dbo.customer customer 
ON orders.order_customer_id=customer.customer_id