Question

我的vb.net软件中的from子句出现语法错误，任何人都可以帮助我????

Private Sub txtSearchByDish_TextChanged(sender As Object, e As EventArgs) Handles txtSearchByDish.TextChanged
    Try
        con = New OleDbConnection(cs)
        con.Open()
        cmd = New OleDbCommand("SELECT DishName, I.Rate, SUM([Qty]) as ItemQuantity, BillDate, ( I.Rate * SUM([Qty])) As TotalAmount FROM Dish as I, RestaurantBillingInfo as P, RestaurantBillingItems as PD, WHERE DishName like '" & txtSearchByDish.Text & "%' order by DishName", con)
        rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection)
        dgw.Rows.Clear()
        While (rdr.Read() = True)
            dgw.Rows.Add(rdr(0), rdr(1), rdr(2), rdr(3), rdr(4))
        End While
        con.Close()
    Catch ex As Exception
        MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
    End Try
End Sub

Answer 1

您无法用逗号结束FROM子句。

更改RestaurantBillingItems as PD, WHERE

至RestaurantBillingItems as PD WHERE

请注意，您的程序是您的程序容易受到SQL注入

另请注意，您使用的是聚合，而不是BillDate，DishName和I.Rate分组，而且它们不是聚合。您可能希望为它们使用聚合，或者按它们分组，例如GROUP BY BillDate, DishName, I.Rate

from子句中的语法错误。 vb.net

1 个答案: