訂單日期/組任務的天數在一個週期

Question

我有一組在一個週期發生的一次循環可以重複任務。現在，我首先要計算這些任務的事件和訂購這些，然後轉動產生的，以獲得一個臨時表中的下列結果：

這個數據是一個週期集，從5日發生2016年12月於具有在每個週期5的任務，我想數據16 2016年12月（7天爲一個週期）被成羣像這樣：

我想不出如何從第一個數據集的最終結果。正如您在第一個數據集中可以看到的那樣，列中的日期順序可以像2016年9月12日至2016年8月12日之前一樣無序排列，但這些任務將始終發生在一個特定模式即'生態和印刷標籤'將始終在'庫存預覽'和'訂購和接收藥物'之後。

我可以隨時使用循環之類的東西，但如果有人能幫助我找到這個ID的正確的查詢非常感激。

下面是一些示例代碼，以創建數據如上所示：

CREATE TABLE tasks (
    CurrentOccurrenceDate DATETIME, 
    TaskID INT, 
    EmpID INT, 
    FacName VARCHAR(50), 
    Census DATETIME, 
    [Cycle Drop] DATETIME, 
    [ECS and Print Label] DATETIME, 
    [Inventory Preview] DATETIME, 
    [Order and Receive Meds] DATETIME 
) 

INSERT INTO tasks (CurrentOccurrenceDate, TaskID, EmpID, FacName, Census, [Cycle Drop], [ECS and Print Label], [Inventory Preview], [Order and Receive Meds]) VALUES 
('2016-12-05', 1, 1, '75TH TERRACE', '2016-12-05', NULL, NULL, NULL, NULL), 
('2016-12-06', 2, 1, '75TH TERRACE', NULL, '2016-12-06', NULL, NULL, NULL), 
('2016-12-07', 3, 1, '75TH TERRACE', NULL, NULL, NULL, '2016-12-07', NULL), 
('2016-12-08', 4, 1, '75TH TERRACE', NULL, NULL, NULL, NULL, '2016-12-08'), 
('2016-12-09', 5, 1, '75TH TERRACE', NULL, NULL, '2016-12-09', NULL, NULL), 
('2016-12-12', 1, 1, '75TH TERRACE', '2016-12-12', NULL, NULL, NULL, NULL), 
('2016-12-13', 2, 1, '75TH TERRACE', NULL, '2016-12-13', NULL, NULL, NULL), 
('2016-12-14', 3, 1, '75TH TERRACE', NULL, NULL, NULL, '2016-12-14', NULL), 
('2016-12-15', 4, 1, '75TH TERRACE', NULL, NULL, NULL, NULL, '2016-12-15'), 
('2016-12-16', 5, 1, '75TH TERRACE', NULL, NULL, '2016-12-16', NULL, NULL) 

Answer 1

我會用一個CTE來標記循環，然後查詢出每個週期與子查詢有關日期值：

WITH tasksEnhanced (CurrentOccurrenceDate, TaskID, EmpID, FacName, Census, [Cycle Drop], [ECS and Print Label], [Inventory Preview], [Order and Receive Meds], cycleNum) AS 
(
    SELECT t1.*, 
      (
       SELECT COUNT(*) 
       FROM tasks t2 
       WHERE t1.FacName = t2.FacName 
       AND t1.TaskID = t2.TaskID 
       AND t2.CurrentOccurrenceDate < t1.CurrentOccurrenceDate 
      ) + 1 AS cycleNum 
    FROM tasks t1 
) 
SELECT DISTINCT 
     te1.FacName, 
     te1.cycleNum, 
     (SELECT Census     FROM tasksEnhanced census WHERE census.FacName = te1.FacName AND census.cycleNum = te1.cycleNum AND census.Census      IS NOT NULL) AS Census, 
     (SELECT [Cycle Drop]    FROM tasksEnhanced cycleDrop WHERE cycleDrop.FacName = te1.FacName AND cycleDrop.cycleNum = te1.cycleNum AND cycleDrop.[Cycle Drop]    IS NOT NULL) AS [Cycle Drop], 
     (SELECT [Inventory Preview]  FROM tasksEnhanced inv  WHERE inv.FacName  = te1.FacName AND inv.cycleNum  = te1.cycleNum AND inv.[Inventory Preview]   IS NOT NULL) AS [Inventory Preview], 
     (SELECT [Order and Receive Meds] FROM tasksEnhanced orderMeds WHERE orderMeds.FacName = te1.FacName AND orderMeds.cycleNum = te1.cycleNum AND orderMeds.[Order and Receive Meds] IS NOT NULL) AS [Order and Receive Meds], 
     (SELECT [ECS and Print Label] FROM tasksEnhanced ECS  WHERE ECS.FacName  = te1.FacName AND ECS.cycleNum  = te1.cycleNum AND ECS.[ECS and Print Label]   IS NOT NULL) AS [ECS and Print Label] 
FROM tasksEnhanced te1 
ORDER BY te1.FacName, te1.cycleNum