透視表期待 '（'

Question

SELECT * FROM 

(select 

petID as pet, 

sum(numpet) as numberofpets 

from petTable) as base 

pivot(

count(sum(numpet)) 

for petid IN ([1],[2],[3]) 

) AS pivottable 

一直停留在這個語法錯誤一段時間:(口口聲聲說語法不正確附近 'numpet' 和（[1]，[2]，[3]）。誰能幫我？謝謝

Answer 1

1. 你錯過了在base派生表
2. 你不能指numberofpets場爲sum(numpet)一個GROUP BY petID條款。只是做COUNT(numberofpets)

Answer 2

使用錯過GROUP BY物理表的SELECT子句中：

SELECT * FROM 
    (
    SELECT petID as pet,sum(numpet) as numberofpets 
    FROM petTable 
    GROUP BY petID 
) base 
    pivot 
    (
    COUNT(SUM(numpet)) FOR petid IN ([1],[2],[3]) 
) AS pivottable