如何使用动态 pivot c# winform 将总计列和行插入 datagridview

Question

我的表单上有一个 datagridview，我用它来处理数据库中的 pivot 信息。 这是我的查询命令：

DECLARE @Date AS VARCHAR(MAX),
        @query AS VARCHAR(MAX)
        
SELECT 
    @dATE = STUFF((SELECT ',' + QUOTENAME(REPLACE(CONVERT(VARCHAR(10), CREATED, 101), '-', '/')) 
                   FROM repair_data_entry
                   WHERE MONTH(CREATED) = 12
                     AND YEAR(CREATED) = 2020
                   GROUP BY CREATED
                   ORDER BY CREATED
                   FOR XML PATH(''), TYPE).value('.', 'VARCHAR(MAX)'), 1, 1, '')

SET @query = 'SELECT NAME AS TECH, ' + @Date + ' 
              FROM  
                  (SELECT NAME, CREATED, REP  
                   FROM repair_data_entry) AS S  
              PIVOT  
                  (COUNT(REP)  
                      FOR CREATED IN ('+@Date+')  
                  ) P'
EXECUTE(@query)

SQL 小提琴

这是我尝试获取总计列和行的查询：

DECLARE @Date1 VARCHAR(MAX),
        @Date2 VARCHAR(MAX),
        @GrandTotalCol VARCHAR(MAX),
        @GrandTotalRow VARCHAR(MAX),
        @FinalQuery VARCHAR(MAX)

SELECT @Date1 = STUFF((SELECT ',' + QUOTENAME(REPLACE(CONVERT(VARCHAR(10), CREATED, 101), '-', '/')) 
                       FROM repair_data_entry
                       WHERE MONTH(CREATED) = 12
                         AND YEAR(CREATED) = 2020
                       GROUP BY CREATED
                       ORDER BY CREATED
                       FOR XML PATH(''), TYPE).value('.', 'VARCHAR(MAX)'), 1, 1, '')
        
SELECT @Date2  = COALESCE (@Date2 + ',[' + @Date1 + ']', '[' + @Date1 + ']')
FROM repair_data_entry 
GROUP BY CREATED
ORDER BY CREATED

SELECT @GrandTotalCol = COALESCE (@GrandTotalCol + 'ISNULL ([' + 
CAST (@Date1 AS VARCHAR) +'],0) + ', 'ISNULL([' + CAST(@Date1 AS VARCHAR)+ '],0) + ')
FROM repair_data_entry
GROUP BY CREATED
ORDER BY CREATED

SET @GrandTotalCol = LEFT (@GrandTotalCol, LEN (@GrandTotalCol)-1)
 
SELECT @GrandTotalRow = COALESCE(@GrandTotalRow + ',ISNULL(SUM([' + 
CAST(@Date1 AS VARCHAR)+']),0)', 'ISNULL(SUM([' + CAST(@Date1 AS VARCHAR)+']),0)')
FROM repair_data_entry
GROUP BY CREATED
ORDER BY CREATED
  
SET @FinalQuery = 'SELECT *, (' + @GrandTotalCol + ') 
AS [Grand Total] INTO  #temp
            FROM
                (SELECT NAME,CREATED,REP
                    FROM  repair_data_entry
                ) A
            PIVOT
                (
                 COUNT(REP)
                 FOR CREATED
                 IN ('  + @date1 +  ')
                ) B
ORDER BY NAME

SELECT * FROM  #temp_MatchesTotal 
UNION ALL
SELECT ''Grand Total'','''',' + @GrandTotalRow + ',  
ISNULL (SUM([Grand Total]),0) FROM  #temp

DROP TABLE  #temp'

EXECUTE(@FinalQuery) 

SQL 小提琴

我不断收到此错误：

关键字“INTO”附近的语法不正确

我不确定该怎么做，但我知道有办法。 这是我搜索和搜索并尝试不同事物的最后手段。

这是我的 C# 代码：

DateTime month = DateTime.Today;
DateTime year = DateTime.Today;

using (SqlConnection cn = new SqlConnection(@"connection"))
{
    cn.Open();

    using (SqlCommand cmdDashboard = new SqlCommand())
    {
        cmdDashboard.CommandText = "DECLARE @Date AS VARCHAR(MAX), @query AS VARCHAR(MAX) select @Date = STUFF((SELECT ',' + QUOTENAME(REPLACE(CONVERT(VARCHAR(10), DATE, 101), '-', '/')) FROM repair_data_entry WHERE MONTH(DATE) = '" + month.Month + "' AND YEAR(DATE) = '" + year.Year + "' GROUP BY DATE ORDER BY DATE FOR XML PATH(''), TYPE).value('.', 'VARCHAR(MAX)'),1,1,'') set @query = 'SELECT NAME AS TECH, ' + @Date + ' FROM (SELECT NAME, DATE, REPAIR FROM repair_data_entry) AS S PIVOT (COUNT(REPAIR) FOR DATE IN('+@Date+')) P' EXECUTE(@query)";

        SqlDataAdapter dataadapter = new SqlDataAdapter(cmdDashboard);

        DataSet ds = new DataSet();
        cmdDashboard.Connection = cn;

        dataadapter.Fill(ds, "repair_data_entry");

        dataGridView1.DataSource = ds;
        dataGridView1.DataMember = "repair_data_entry";

        dataGridView1.Columns[0].Frozen = true;
        dataGridView1.Rows[0].Frozen = true;

        dataGridView1.Columns[0].DefaultCellStyle.BackColor = SystemColors.Control;

        foreach (DataGridViewColumn column in dataGridView1.Columns)
        {
            column.SortMode = DataGridViewColumnSortMode.NotSortable;
        }

        dataGridView1.ClearSelection();
        cn.Close();
    }
}

有些事情与小提琴不同，例如日期列和月份和年份。

我不确定这是否是正确的方法。 我还在学习 C# 和 SQL。

Answer 1

下面的这两行看起来根本不正确，特别是当您尝试使用 sum() function 准备 @GrandTotalRow 时

SELECT @GrandTotalCol = COALESCE (@GrandTotalCol + 'ISNULL ([' + 
CAST (@Date1 AS VARCHAR) +'],0) + ', 'ISNULL([' + CAST(@Date1 AS VARCHAR)+ '],0) + ')
FROM repair_data_entry
GROUP BY CREATED
ORDER BY CREATED

SET @GrandTotalCol = LEFT (@GrandTotalCol, LEN (@GrandTotalCol)-1)
 
SELECT @GrandTotalRow = COALESCE(@GrandTotalRow + ',ISNULL(SUM([' + 
CAST(@Date1 AS VARCHAR)+']),0)', 'ISNULL(SUM([' + CAST(@Date1 AS VARCHAR)+']),0)')
FROM repair_data_entry
GROUP BY CREATED
ORDER BY CREATED

这是 output 打印@GrandTotalCol：

ISNULL([[12/01/2020],[12/02/2020]],0) + ISNULL ([[12/01/2020],[12/02/2020]],0) + 

并打印@GrandTotalRow：

ISNULL(SUM([[12/01/2020],[12/02/2020]]),0),ISNULL(SUM([[12/01/2020],[12/02/2020]]),0)

他们都没有产生有效的 sql 语法：

• ISNULL(只需要2个arguments
• SUM() 只需要 1 个 arguments
• 不平衡 [[ 和 ]]

相反，我建议您更多地研究GROUP BY ROLLUP命令，这可能对您尝试做的事情有所帮助。

Answer 2

好的，根据您的查询，这是您需要做的：

 DECLARE @Datecolumns VARCHAR(MAX), @GrandTotalCol VARCHAR(MAX), @FinalQuery VARCHAR(MAX) SELECT @Datecolumns = STUFF((SELECT ',' + QUOTENAME(REPLACE(CONVERT(VARCHAR(10), CREATED, 101), '-', '/')) FROM repair_data_entry GROUP BY CREATED ORDER BY CREATED FOR XML PATH(''), TYPE).value('.', 'VARCHAR(MAX)'), 1, 1, '') set @GrandTotalCol = @Datecolumns + ',[GrandTotal]' SET @FinalQuery = 'SELECT * INTO #temp FROM ( select Name,case when GROUPING(CONVERT(VARCHAR(10), CREATED, 101)) = 1 then ''GrandTotal'' else CONVERT(VARCHAR(10), CREATED, 101) end as CREATED, COUNT(REP) REP from repair_data_entry group by name, ROLLUP (CONVERT(VARCHAR(10), CREATED, 101)) ) as source PIVOT ( SUM(REP) FOR CREATED IN (' + @GrandTotalCol + ') ) B ORDER BY NAME SELECT * FROM #temp DROP TABLE #temp' EXECUTE(@FinalQuery) GO

 姓名 |  2020 年 11 月 2 日 |  2020 年 12 月 1 日 |  2020 年 12 月 2 日 | 总计：---- |  ---------: |  ---------: |  ---------: |  ---------: 比尔 |  null |  6 |  5 |  11 比尔2 |  1 |  3 |  3 |  7

db<> 在这里摆弄