Question

在HelpDesk系统中，我有一个表（请求），其中包含一个colume（状态：打开，正在进行，已关闭）

我想要一个Query来比较打开请求和已关闭请求的数量，使用VisualStudio图表

我尝试使用此SQL查询来计算打开和关闭请求的频率，但是语法错误

SELECT [Status] COUNT[Status] AS Frequency
FROM [RequestF] GROUP BY [Status]

 asp:Chart ID="Chart1" runat="server" DataSourceID="SqlDataSource1">
                           <Series>
    <asp:Series Name="Series1" XValueMember="Status"  ChartType="Pie"></asp:Series>
</Series>
<ChartAreas>
    <asp:ChartArea Name="ChartArea1">
        <AxisY>
            <LabelStyle Format="P0" />
        </AxisY>
    </asp:ChartArea>
</ChartAreas>

                       </asp:Chart>
                       <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:BiomedicalSampleConnectionString %>" SelectCommand="SELECT [Status] COUNT[Status] AS Frequency FROM [RequestF] GROUP BY [Status] "></asp:SqlDataSource>

Answer 1

试试这个：

SelectCommand="SELECT Status,COUNT(Status) AS Frequency FROM RequestF GROUP BY Status"

SQL Query查找列中元素的频率

1 个答案: