是否可以执行PIVOT并从表中选择列表,而不是使用单个值?
像这样(语法错误不正确):
SELECT *
FROM (
SELECT RepID, MilestoneID, ResultID FROM RM
) AS src
PIVOT (
MAX(ResultID) FOR MilestoneID IN (SELECT id FROM m)
) AS pvt
这个编译,但对我不起作用:
SELECT *
FROM (
SELECT RepID, MilestoneID, ResultID FROM RM
) AS src
PIVOT (
MAX(ResultID) FOR MilestoneID IN ([1], [2], [3], [4])
) AS pvt
PS:我不想使用动态SQL,有没有办法在不使用动态SQL的情况下执行此操作?
答案 0 :(得分:11)
如果动态SQL出局,那么我担心答案是否定的,它无法完成。解析器需要预先知道值以执行到列的转移。
答案 1 :(得分:4)
可以做到。
DECLARE @idList varchar(500)
SET @idList = COALESCE(@idList + ',', '') + id
FROM m
DECLARE @sqlToRun varchar(1000)
SET @sqlToRun = '
SELECT *
FROM (
SELECT RepID, MilestoneID, ResultID FROM RM
) AS src
PIVOT (
MAX(ResultID) FOR MilestoneID IN ('+ @idList +')
) AS pvt'
EXEC (@sqlToRun)