如何從「情況當」數條件

Question

我希望有人能幫助，我的情況：

如何從我的情況時開始計數狀態在我的SQL代碼：

SELECT CASE WHEN datediff(b.`DATE` , A.`SUBMIT_DATE`) >3 
THEN 'NOK' 
ELSE 'OK' 
END AS 
STATUS FROM complaint a 
LEFT JOIN handling b ON a.cid = b.cid 

Answer 1

它只是應該是這樣的：d哈哈：

Select status,count(*) 
From 
(
SELECT CASE WHEN datediff(b.`DATE` , A.`SUBMIT_DATE`) >3 THEN 'NOK' ELSE 'OK' END AS STATUS FROM complaint a LEFT JOIN handling b ON a.cid = b.cid 
) a 
Group by status 

Answer 2

試試下面查詢 -

SELECT CASE WHEN DATEDIFF(b.`DATE` , A.`SUBMIT_DATE`) >3 THEN 'NOK' ELSE 'OK' END AS mystatus, 
SUM(IF(DATEDIFF(b.`DATE` , A.`SUBMIT_DATE`) >3,1,0)) AS cnt 
FROM complaint a 
LEFT JOIN handling b ON a.cid = b.cid 
GROUP BY mystatus; 

Answer 3

SELECT 
    CASE 
     WHEN datediff(b.`DATE` , A.`SUBMIT_DATE`) >3 THEN 'NOK' 
     ELSE 'OK' 
    END AS STATUS 
FROM complaint a 
LEFT JOIN handling b ON a.cid = b.cid 
GROUP BY CASE 
      WHEN datediff(b.`DATE` , A.`SUBMIT_DATE`) >3 THEN 'NOK' 
      ELSE 'OK' 
     END 

或者，您可以打開狀態（OK，NOK）到不同的列：

SELECT 
    COUNT CASE WHEN datediff(b.`DATE` , A.`SUBMIT_DATE`) >3 THEN 1 END) AS 'NOK', 
    COUNT CASE WHEN datediff(b.`DATE` , A.`SUBMIT_DATE`) <=3 THEN 1 END) AS 'OK' 
FROM complaint a LEFT JOIN handling b ON a.cid = b.cid