我如何得到2個不同列的相同總值

我需要有人來糾正下面的陳述。先謝謝你。我如何得到2個不同列的相同總值

SELECT CATEGORY 
--WHAT PERIOD? 
,'P3' AS PERIOD 
,'2013' AS FISCALYEAR   
,COUNT(CASE SecurityLayer WHEN 'dblayer' THEN SecurityLayer ELSE '' END) DB_SEC_COUNT   
,COUNT(CASE SecurityLayer WHEN 'Applayer' THEN SecurityLayer ELSE '' END) APP_SEC_COUNT 
FROM [db_eCAM].[dbo].[tbl_SecChecks] 
GROUP BY CATEGORY

來源

2012-04-20 Yves

什麼是表的列，該錯誤是什麼？ – hkutluay 2012-04-20 19:49:10

我正在做一個聚合。 – Yves 2012-04-20 19:51:13

您是否試圖返回每個匹配項的次數？然後用

SELECT CATEGORY 
--WHAT PERIOD? 
,'P3' AS PERIOD 
,'2013' AS FISCALYEAR 
,SUM(CASE SecurityLayer WHEN 'dblayer' then 1 else 0 end) AS DB_SEC_COUNT 
,SUM(CASE SecurityLayer WHEN 'Applayer' then 1 else 0 end) AS APP_SEC_COUNT 
FROM [db_eCAM].[dbo].[tbl_SecChecks] 
GROUP BY CATEGORY

試試看。

來源

2012-04-20 19:50:38

問題解決了！非常感謝（： – Yves 2012-04-20 19:53:52

而是計算列的嘗試總結它（否則每一行仍將無論價值計）：

SELECT CATEGORY 
--WHAT PERIOD? 
,'P3' AS PERIOD 
,'2013' AS FISCALYEAR   
,SUM(CASE SecurityLayer WHEN 'dblayer' THEN 1 ELSE 0 END) DB_SEC_COUNT   
,SUM(CASE SecurityLayer WHEN 'Applayer' THEN 1 ELSE 0 END) APP_SEC_COUNT 
FROM [db_eCAM].[dbo].[tbl_SecChecks] 
GROUP BY CATEGORY

來源

2012-04-20 19:51:09

我如何得到2個不同列的相同總值

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