SQLserver中cube：多維數(shù)據(jù)集實例詳解

來源：本站原創(chuàng)|時間：2020-01-10|欄目：MsSql|點擊：次

1、cube:生成多維數(shù)據(jù)集，包含各維度可能組合的交叉表格，使用with 關鍵字連接 with cube

根據(jù)需要使用union all 拼接

判斷某一列的null值來自源數(shù)據(jù)還是 cube 使用GROUPING關鍵字

GROUPING([檔案號]) = 1 ： null值來自cube（代表所有的檔案號）
GROUPING([檔案號]) = 0 ： null值來自源數(shù)據(jù)

舉例：

SELECT * INTO ##GET
FROM 
  (SELECT *
    FROM ( SELECT
      CASE
      WHEN (GROUPING([檔案號]) = 1) THEN
      '合計'
      ELSE [檔案號]
      END AS '檔案號',
      CASE
      WHEN (GROUPING([系列]) = 1) THEN
      '合計'
      ELSE [系列]
      END AS '系列',
      CASE
      WHEN (GROUPING([店長]) = 1) THEN
      '合計'
      ELSE [店長]
      END AS '店長', SUM (剩余次數(shù)) AS '總剩余',
      CASE
      WHEN (GROUPING([店名]) = 1) THEN
      '合計'
      ELSE [店名]
      END AS '店名'
    FROM ##PudianCard
    GROUP BY [檔案號], [店名], [店長], [系列]
    WITH cube
    HAVING GROUPING([店名]) != 1
        AND GROUPING([檔案號]) = 1 --AND GROUPING([系列]) = 1 ) AS M
    UNION
    ALL 
      (SELECT *
        FROM ( SELECT
          CASE
          WHEN (GROUPING([檔案號]) = 1) THEN
          '合計'
          ELSE [檔案號]
          END AS '檔案號',
          CASE
          WHEN (GROUPING([系列]) = 1) THEN
          '合計'
          ELSE [系列]
          END AS '系列',
          CASE
          WHEN (GROUPING([店長]) = 1) THEN
          '合計'
          ELSE [店長]
          END AS '店長', SUM (剩余次數(shù)) AS '總剩余',
          CASE
          WHEN (GROUPING([店名]) = 1) THEN
          '合計'
          ELSE [店名]
          END AS '店名'
        FROM ##PudianCard
        GROUP BY [檔案號], [店名], [店長], [系列]
        WITH cube
        HAVING GROUPING([店名]) != 1
            AND GROUPING([店長]) != 1 ) AS P )
        UNION
        ALL 
          (SELECT *
            FROM ( SELECT
              CASE
              WHEN (GROUPING([檔案號]) = 1) THEN
              '合計'
              ELSE [檔案號]
              END AS '檔案號',
              CASE
              WHEN (GROUPING([系列]) = 1) THEN
              '合計'
              ELSE [系列]
              END AS '系列',
              CASE
              WHEN (GROUPING([店長]) = 1) THEN
              '合計'
              ELSE [店長]
              END AS '店長', SUM (剩余次數(shù)) AS '總剩余',
              CASE
              WHEN (GROUPING([店名]) = 1) THEN
              '合計'
              ELSE [店名]
              END AS '店名'
            FROM ##PudianCard
            GROUP BY [檔案號], [店名], [店長], [系列]
            WITH cube
            HAVING GROUPING([店名]) != 1
                AND GROUPING([店長]) != 1 ) AS W )
            UNION
            ALL 
              (SELECT *
                FROM ( SELECT
                  CASE
                  WHEN (GROUPING([檔案號]) = 1) THEN
                  '合計'
                  ELSE [檔案號]
                  END AS '檔案號',
                  CASE
                  WHEN (GROUPING([系列]) = 1) THEN
                  '合計'
                  ELSE [系列]
                  END AS '系列',
                  CASE
                  WHEN (GROUPING([店長]) = 1) THEN
                  '合計'
                  ELSE [店長]
                  END AS '店長', SUM (剩余次數(shù)) AS '總剩余',
                  CASE
                  WHEN (GROUPING([店名]) = 1) THEN
                  '合計'
                  ELSE [店名]
                  END AS '店名'
                FROM ##PudianCard
                GROUP BY [檔案號], [店名], [店長], [系列]
                WITH cube
                HAVING GROUPING([店名]) = 1
                    AND GROUPING([店長]) = 1
                    AND GROUPING([檔案號]) = 1 ) AS K ) ) AS T

2、rollup:功能跟cube相似

3、將某一列的數(shù)據(jù)作為列名，動態(tài)加載，使用存儲過程，拼接字符串

DECLARE @st nvarchar (MAX) = '';SELECT @st =@st + 'max(case when [系列]=''' + CAST ([系列] AS VARCHAR) + ''' then [總剩余] else null end ) as [' + CAST ([系列] AS VARCHAR) + '],'
FROM ##GET
GROUP BY [系列]; print @st;

4、根據(jù)某一列分組，分別建表

SELECT
				'select ROW_NUMBER() over(order by [卡項] desc) as [序號], [會員],[檔案號],[卡項],[剩余次數(shù)],[員工],[店名] into ' + ltrim([店名]) + ' from 查詢 where [店名]=''' + [店名] + ''' ORDER BY [卡項] desc'
		FROM
			查詢
		GROUP BY
			[店名]

總結

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