在单个MySql存储过程中按多列分组 [英] Group by multiple columns on a single MySql stored procedure

问题描述

我具有以下存储过程，可用于在多个ASP图表项目上显示数据.

I have the below stored procedure which I use to show data on multiple ASP chart items.

CREATE DEFINER=`root`@`localhost` PROCEDURE `GetChartApprovedData`(in siteValue varchar(45),
in skillValue varchar(100), in shiftValue varchar(100), in tmValue varchar(45), 
in grpmValue varchar(45), in dateValue date, in dateValue1 date)
BEGIN
SELECT count(agentlogin) AS totalApproved, shift AS Shift, skill AS Skill, tm AS TM, grpM AS GrpM
   FROM approved
   WHERE (sitevalue IS NULL
           OR site = sitevalue)
         AND (skillvalue IS NULL
               OR skill = skillvalue)
         AND (shiftvalue IS NULL
               OR shift = shiftvalue)
         AND (tmValue IS NULL
                OR tm = tmValue)
         AND (grpmValue IS NULL
                OR grpM = grpmValue)
         AND (dateValue IS NULL
                OR date BETWEEN dateValue AND dateValue1)
                group by shift, skill;
END

当我使用上述存储过程在ASP图表中显示数据时，我得到了以下结果

And when I use the above stored procedure to show the data in ASP chart I get the below result

两个图表都给出相同的分组结果.我想要的是第一个图表，我希望将其按班次进行分组，而第二个图表，我希望将其按技能进行分组.是否可以在不使用单独的存储过程的情况下实现这两者?请告诉我.在此先感谢:)

Both the chart are giving the same grouping result. What I want is for the first chart I want it to group by shift and for the second chart I want it to be grouped by skill. Is it possible to achieve this without using separate stored procedure for both? Please let me know. Thanks in advance :)

private void GetChartData()
{
    string MyConString = ConfigurationManager.ConnectionStrings["connStr"].ConnectionString;
    MySqlConnection con = new MySqlConnection(MyConString);
    MySqlCommand cmd = new MySqlCommand("GetChartApprovedData");
    cmd.CommandType = CommandType.StoredProcedure;
    string siteValue = null;
    DateTime? dateValue = null;
    DateTime? dateValue1 = null;
    if (ddlSite.SelectedValue != null && ddlSite.SelectedValue != "0")
    {
       siteValue = ddlSite.SelectedValue;
    }
    if (ViewState["Date"] != null && ViewState["Date"].ToString() != "0")
    {
        dateValue = DateTime.Parse(ViewState["Date"].ToString());
    }
    if (ViewState["Date1"] != null && ViewState["Date1"].ToString() != "0")
    {
        dateValue1 = DateTime.Parse(ViewState["Date1"].ToString());
    }
    cmd.Parameters.AddWithValue("siteValue", siteValue);
    cmd.Parameters.AddWithValue("dateValue", dateValue);
    cmd.Parameters.AddWithValue("dateValue1", dateValue1);
    cmd.Connection = con;
    con.Open();
    MySqlDataReader myread = cmd.ExecuteReader();
    while (myread.Read())
    {
        this.Chart2.Series["Series1"].Points.AddXY(myread["Shift"], myread["totalApproved"]);
        Chart2.Series["Series1"].IsValueShownAsLabel = true;
        Chart2.Series["Series1"].Label = "#VALY(#PERCENT)";
        Chart2.Series["Series1"].ToolTip = "Shift: #VALX \\nCount: #VALY";
        Chart2.ChartAreas["ChartArea1"].AxisX.LabelStyle.Interval = 1;
        Chart2.Legends.Clear();
        Chart2.ChartAreas["ChartArea1"].AxisX.MajorGrid.Enabled = false;
        Chart2.ChartAreas["ChartArea1"].AxisY.MajorGrid.Enabled = false;
        Chart2.Series["Series1"].Color = Color.DarkOrange;


        this.Chart1.Series["Series1"].Points.AddXY(myread["Skill"], myread["totalApproved"]);
        Chart1.Series["Series1"].IsValueShownAsLabel = true;
        Chart1.Series["Series1"].Label = "#VALY(#PERCENT)";
        Chart1.Series["Series1"].ToolTip = "Skill: #VALX \\nCount: #VALY";
        Chart1.ChartAreas["ChartArea1"].AxisX.LabelStyle.Interval = 1;
        Chart1.Series["Series1"].Color = Color.DarkOrange;
        Chart1.Series["Series1"].LabelBackColor = Color.White;
        Chart1.Legends.Clear();
        Chart1.ChartAreas["ChartArea1"].AxisX.MajorGrid.Enabled = false;
        Chart1.ChartAreas["ChartArea1"].AxisY.MajorGrid.Enabled = false;
   }
   con.Close();
}

推荐答案

解决问题的一种方法是在过程中进行两个查询(一个向GROUP BY转移，一个向GROUP BY转移，并使用在结果中标记以表明结果是否是按班次或技能分组的数据:

One way around your problem would be to do both queries inside your procedure (one to GROUP BY shift, and one to GROUP BY skill, and use a flag in the results to indicate if the result was data grouped by shift or skill:

CREATE DEFINER=`root`@`localhost` PROCEDURE `GetChartApprovedData`(in siteValue varchar(45),
in skillValue varchar(100), in shiftValue varchar(100), in tmValue varchar(45), 
in grpmValue varchar(45), in dateValue date, in dateValue1 date)
BEGIN
SELECT 'skill' AS type, count(agentlogin) AS totalApproved, skill AS Skill, tm AS TM, grpM AS GrpM
   FROM approved
   WHERE (sitevalue IS NULL
           OR site = sitevalue)
         AND (skillvalue IS NULL
               OR skill = skillvalue)
         AND (shiftvalue IS NULL
               OR shift = shiftvalue)
         AND (tmValue IS NULL
                OR tm = tmValue)
         AND (grpmValue IS NULL
                OR grpM = grpmValue)
         AND (dateValue IS NULL
                OR date BETWEEN dateValue AND dateValue1)
                group by skill;
SELECT 'shift' AS type, count(agentlogin) AS totalApproved, shift AS Shift, tm AS TM, grpM AS GrpM
   FROM approved
   WHERE (sitevalue IS NULL
           OR site = sitevalue)
         AND (skillvalue IS NULL
               OR skill = skillvalue)
         AND (shiftvalue IS NULL
               OR shift = shiftvalue)
         AND (tmValue IS NULL
                OR tm = tmValue)
         AND (grpmValue IS NULL
                OR grpM = grpmValue)
         AND (dateValue IS NULL
                OR date BETWEEN dateValue AND dateValue1)
                group by shift;
END

然后在您的C#代码中，您将更改以下行:

Then in your c# code you would change these lines:

    this.Chart2.Series["Series1"].Points.AddXY(myread["Shift"], myread["totalApproved"]);
    this.Chart1.Series["Series1"].Points.AddXY(myread["Skill"], myread["totalApproved"]);

收件人:

if (myread["Type"] == "shift") {
     this.Chart2.Series["Series1"].Points.AddXY(myread["Shift"], myread["totalApproved"]);
}
if (myread["Type"] == "skill") {
     this.Chart1.Series["Series1"].Points.AddXY(myread["Skill"], myread["totalApproved"]);
}

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