Question

SQL Server 2012，我将光标设置为：

DECLARE @EmployeeID nchar(10)
DECLARE @TotalDaysWorked nchar(10)

DECLARE @GetEmmployeeID CURSOR
SET  @GetEmmployeeID = CURSOR FOR
SELECT [Emp#]
FROM [dbo].[Transform] where Home='ROOMS'
OPEN @GetEmmployeeID
FETCH NEXT
FROM @GetEmmployeeID INTO @EmployeeID  
WHILE @@FETCH_STATUS = 0
BEGIN

光标开始运行内部

SELECT Emp#,
      (
        (CASE WHEN [WK1_Day1] IS NOT NULL THEN 1 ELSE 0 END)
      + (CASE WHEN [WK1_Day2] IS NOT NULL THEN 1 ELSE 0 END)
      + (CASE WHEN [WK1_Day3] IS NOT NULL THEN 1 ELSE 0 END)
      + (CASE WHEN [WK1_Day4] IS NOT NULL THEN 1 ELSE 0 END)
      + (CASE WHEN [WK1_Day5] IS NOT NULL THEN 1 ELSE 0 END)
      + (CASE WHEN [WK1_Day6] IS NOT NULL THEN 1 ELSE 0 END)
      + (CASE WHEN [WK1_Day7] IS NOT NULL THEN 1 ELSE 0 END)
      )
      AS total_days_worked 
        FROM [dbo].[Transform]
        WHERE [Emp#]=@EmployeeID and [Home] = 'Rooms'   
       --This is what I can't figure out how to do...  the rest works
        --UPDATE 
         --[dbo].[Transform]  
          --Set [Week1DaysWorked] = total_days_worked
         --Get the next record    
FETCH NEXT
FROM @GetEmmployeeID INTO @EmployeeID
END
CLOSE @GetEmmployeeID
DEALLOCATE @GetEmmployeeID

Answer 1

我认为你不需要cursor。

您可以改为使用基于集合update。试试这个。

UPDATE 
[dbo].[Transform]  
set [Week1DaysWorked] = (CASE WHEN [WK1_Day1] IS NOT NULL THEN 1 ELSE 0 END)
      + (CASE WHEN [WK1_Day2] IS NOT NULL THEN 1 ELSE 0 END)
      + (CASE WHEN [WK1_Day3] IS NOT NULL THEN 1 ELSE 0 END)
      + (CASE WHEN [WK1_Day4] IS NOT NULL THEN 1 ELSE 0 END)
      + (CASE WHEN [WK1_Day5] IS NOT NULL THEN 1 ELSE 0 END)
      + (CASE WHEN [WK1_Day6] IS NOT NULL THEN 1 ELSE 0 END)
      + (CASE WHEN [WK1_Day7] IS NOT NULL THEN 1 ELSE 0 END)
where [Home] = 'Rooms'

游标中嵌入的大小写不生成更新变量

1 个答案: