Question

我正在尝试学习如何在图表中显示数据，到目前为止我已设法显示数据，但我遇到了我的SQL查询问题，我需要它来向我展示数据以某种方式。

这是我的代码＆gt;我从我选择商店名称和2个日期时间选择器中获得了1个组合框。

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

    Dim Provider As String
    Provider = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source ="
    Dim dataFile As String
    dataFile = "Original.accdb"


    Dim SqlQry1 As String = "SELECT [Delivered], [Datess] FROM [Table1] WHERE [Store] = @1 AND [Datess] BETWEEN @2 AND @3 ORDER BY [Datess] ASC"


    Using myconnection As New OleDbConnection(Provider & dataFile)
        myconnection.Open()

        Dim cmd1 As New OleDbCommand(SqlQry1, myconnection)
        cmd1.Parameters.Add(New OleDbParameter With {.ParameterName = "@1", .OleDbType = OleDbType.Char, .Value = combobox1.SelectedItem})
        cmd1.Parameters.Add(New OleDbParameter With {.ParameterName = "@2", .OleDbType = OleDbType.Date, .Value = fromdatess.Value.Date})
        cmd1.Parameters.Add(New OleDbParameter With {.ParameterName = "@3", .OleDbType = OleDbType.Date, .Value = todatess.Value.Date})


        Dim dr As OleDbDataReader = cmd1.ExecuteReader
        While dr.Read

            Dim asd As String
            asd = dr("Delivered")

            Dim datess As Date
            datess = dr("Datess")

            Chart1.ChartAreas(0).AxisX.Interval = 1
            Chart1.Series("Series1").Points.AddXY(datess.ToShortDateString, asd)


        End While

    End Using


End Sub

我希望能够总结＆＃34; Delivered＆＃34; 现在我的桌子就像这样＆gt;

ID    |   Store    |  Delivered |  Datess
 1        Ace1         200         3/1/2018
 2        Ace1         150         3/1/2018
 3        Bis1          50         3/2/2018
 4        Ace1          50         3/2/2018

我想要做的就是像这样显示＆gt;

Ace1 350  3/1/2018
Bis1  50  3/2/2018
Ace1  50  3/2/2018

正如你所看到的，Ace1总和了。现在我已经尝试对它进行求和，但它会显示所有日子的总和结果，因为我有＆＃34; BETWEEN Datess和Datess＆＃34;所以这些日期之间的总结。我怎样才能只计算当天的数据，然后显示整个月的1/3/2018到1/30/2018的数据。任何帮助将受到高度赞赏。

感谢〜

Answer 1

我认为您需要使用SUM和GROUP BY

如果您想阅读SUM([Delivered])，请为该字段提供别名。

SELECT [Store],SUM([Delivered]) AS Delivered, [Datess] 
FROM [Table1] 
WHERE [Store] = @1 AND [Datess] BETWEEN @2 AND @3 
GROUP BY [Store],[Datess] 
ORDER BY [Datess] ASC

在图表中显示汇总列？日/月

1 个答案: