將列轉換成行，反之亦然

Question

我試圖轉換成列，我不斷遇到錯誤。我不知道我做錯了什麼。我嘗試了下面的代碼，但我不斷得到「FOR」和括號中的第一個單詞下的紅色波浪線。這裏是我的代碼：

select d.City,d.Geographic_Region_Name, d.Site_Type 
from Site_Profile as d 
pivot 
(City for Geographic_Region_Name in (City,Geographic_Region_Name,site_type) as pivotable; 

Answer 1

Pivot是用於車削集合行成列。從documentation：

SELECT <non-pivoted column>, 
    [first pivoted column] AS <column name>, 
    [second pivoted column] AS <column name>, 
    ... 
    [last pivoted column] AS <column name> FROM 
    (<SELECT query that produces the data>) 
    AS <alias for the source query> PIVOT ( 

相關線路：

<aggregation function>(<column being aggregated>)

，其餘

FOR [<column that contains the values that will become column headers>] 
    IN ([first pivoted column], [second pivoted column], 
    ... [last pivoted column]) ) AS <alias for the pivot table> 
    <optional ORDER BY clause>; 

你需要使用一個聚合函數（SUM，COUNT， MAX,MIN等）在FOR之前。