在同一查詢中比較SUM（CASE ... END）的列

我試圖向我的查詢添加一個名爲Ready的列，該列用於檢查Complete的總和是否等於Total與地點'Y'如果爲真，則爲'N'如果爲假。在同一查詢中比較SUM（CASE ... END）的列

這裏是我的查詢作品生產4列

SELECT pc.Sub, 
    SUM(CASE WHEN `SheetStatus` LIKE 'Complete' THEN 1 ELSE 0 END) AS 'Complete', 
    SUM(CASE WHEN `SheetStatus` LIKE 'Not started' THEN 1 ELSE 0 END) AS 'Not Started', 
    SUM(CASE WHEN `CheckSheet` LIKE '%' THEN 1 ELSE 0 END) AS 'Total'   
FROM `pc` 
Group By pc.Sub WITH ROLLUP

我只是無法弄清楚如何創建額外的列，如果它是不可能的。問候

來源

2013-05-09 ironoverload

所以你想改變基於條件的表？爲什麼你想這樣做？ – 75inchpianist 2013-05-09 03:45:06

@ 75inchpianist他希望將第五列添加到從他的select中的其他兩列計算出的select中。 – Patashu 2013-05-09 03:45:38

你有沒有嘗試類似'CASE當SUM（CASE當'SheetStatus \'LIKE'完成'然後1 ELSE 0 END）= SUM（CASE當'CheckSheet \'樣'％'然後1 ELSE 0 END）然後'是'其他'N''準備'？ – Patashu 2013-05-09 03:47:02

試試這個：

SELECT pc.Sub, 
    SUM(IF(`SheetStatus`='Complete',1,0) AS 'Complete', 
    SUM(IF(`SheetStatus`='Not started',1,0) AS 'Not Started', 
    SUM(IF(`CheckSheet` LIKE '%',1,0) AS 'Total' 
    IF(SUM(IF(`CheckSheet` LIKE '%',1,0) = SUM(IF(`SheetStatus`='Complete',1,0),"Y","N") AS Ready 
FROM `pc` 
Group By pc.Sub WITH ROLLUP

來源

2013-05-09 03:48:53 MISJHA

儘量外選擇

SELECT `Complete`, 
     `Not Started`, 
     `Total`, 
     CASE WHEN `Complete` = `Total` THEN 'Y' ELSE 'N' END `Ready` 
    FROM (
SELECT pc.Sub, 
    SUM(CASE WHEN `SheetStatus` LIKE 'Complete' THEN 1 ELSE 0 END) AS `Complete`, 
    SUM(CASE WHEN `SheetStatus` LIKE 'Not started' THEN 1 ELSE 0 END) AS `Not Started`, 
    SUM(CASE WHEN `CheckSheet` LIKE '%' THEN 1 ELSE 0 END) AS `Total`   
FROM `pc` 
GROUP BY pc.Sub WITH ROLLUP) t

來源

2013-05-09 03:47:05 peterm

令人驚訝的是我所需要的，非常感謝peterm，這是我第一次發佈到堆棧 – ironoverload 2013-05-09 03:57:16

在同一查詢中比較SUM（CASE ... END）的列

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