SQL查詢 - 如何排除特定字段的WHERE

Question

請參閱下面的SQL查詢，它工作正常。它計算我要排除WHERE爲Sales場的是，不是，其他數量和匹配的手機號碼[銷售領域（D.MobileNo = S.mobile）的數量

SELECT D.Username, 
     SUM(CASE WHEN D.type = 'Yes' THEN 1 ELSE 0 END) as Yes, 
     SUM(CASE WHEN D.type = 'Not' THEN 1 ELSE 0 END) as Not, 
     SUM(CASE WHEN D.type = '' THEN 1 ELSE 0 END) as Other, 
     SUM(CASE WHEN S.mobile IS NULL THEN 0 ELSE 1 END) as Sales, 
     COUNT(*) as TOTAL 
FROM dairy as D 
    LEFT JOIN (SELECT DISTINCT mobile FROM sales) as S on D.MobileNo = S.mobile 
WHERE source = 'Network' 
     AND UNIX_TIMESTAMP(CheckDate) >= 1309474800 
     AND UNIX_TIMESTAMP(CheckDate) <= 1311894000 
GROUP BY D.Username 
ORDER BY TOTAL DESC 

- 它不應該是從CheckDate一部分。這意味着它應該檢查dairy表中的任何記錄，而字段中的CheckDate。

如何做到這一點？

Answer 1

如果你真的只想在一個查詢中得到這些結果，這可能會有訣竅。

SELECT D.Username, 
    SUM(CASE WHEN D.type = 'Yes' AND UNIX_TIMESTAMP(CheckDate) >= 1309474800 AND UNIX_TIMESTAMP(CheckDate) <= 1311894000 THEN 1 ELSE 0 END) as Yes, 
    SUM(CASE WHEN D.type = 'Not' AND UNIX_TIMESTAMP(CheckDate) >= 1309474800 AND UNIX_TIMESTAMP(CheckDate) <= 1311894000 THEN 1 ELSE 0 END) as Not, 
    SUM(CASE WHEN D.type = '' AND UNIX_TIMESTAMP(CheckDate) >= 1309474800 AND UNIX_TIMESTAMP(CheckDate) <= 1311894000 THEN 1 ELSE 0 END) as Other, 
    SUM(CASE WHEN S.mobile IS NULL THEN 0 ELSE 1 END) as Sales, 
    COUNT(*) as TOTAL, 
    SUM(CASE WHEN UNIX_TIMESTAMP(CheckDate) >= 1309474800 AND UNIX_TIMESTAMP(CheckDate) <= 1311894000 THEN 1 ELSE 0 END) AS TOTALINCHECKDATE 
FROM dairy as D 
    LEFT JOIN (SELECT DISTINCT mobile FROM sales) as S on D.MobileNo = S.mobile 
WHERE source = 'Network' 
GROUP BY D.Username 
ORDER BY TOTAL DESC 

需要注意的是「總」會計算所有行（包括那些誰哪次不是你的了checkdate範圍內），TOTALINCHECKDATE返回相同的值，如您以前的查詢。

很明顯，這仍然可以優化。

Answer 2

假設用戶名也存在於SALES表

SELECT Username,SUM(Yes) As Yes, SUM(`Not`) As `Not` 
    , SUM(Other) As Other, SUM(sales) Sales, SUM(total) 
FROM (
-- get diary data 
SELECT username,mobileNo As mobile, 
     CASE WHEN D.type = 'Yes' THEN 1 ELSE 0 END as Yes, 
     CASE WHEN D.type = 'Not' THEN 1 ELSE 0 END as `Not`, 
     CASE WHEN D.type = '' THEN 1 ELSE 0 END as Other, 
     0 As sales, 1 as total 
FROM dairy as D 
WHERE source = 'Network' 
     AND UNIX_TIMESTAMP(CheckDate) >= 1309474800 
     AND UNIX_TIMESTAMP(CheckDate) <= 1311894000 

UNION ALL 
-- get all sales 
SELECT DISTINCT username,mobile, 0 as Yes, 0 as `Not`, 0 As Other, 1 As sales, 0 As total 
FROM sales 
    WHERE UNIX_TIMESTAMP(CheckDate) >= 1309474800 
     AND UNIX_TIMESTAMP(CheckDate) <= 1311894000 
) AS a 
GROUP BY Username 

也可以嘗試用你的約會此外

SELECT D.Username, 
     SUM(CASE WHEN D.type = 'Yes' THEN 1 ELSE 0 END) as Yes, 
     SUM(CASE WHEN D.type = 'Not' THEN 1 ELSE 0 END) as Not, 
     SUM(CASE WHEN D.type = '' THEN 1 ELSE 0 END) as Other, 
     SUM(CASE WHEN S.mobile IS NULL THEN 0 ELSE 1 END) as Sales, 
     COUNT(*) as TOTAL 
FROM dairy as D 
    LEFT JOIN (SELECT DISTINCT mobile FROM sales WHERE UNIX_TIMESTAMP(CheckDate) >= 1309474800 AND UNIX_TIMESTAMP(CheckDate) <= 1311894000) as S on D.MobileNo = S.mobile 
WHERE source = 'Network' 
     AND UNIX_TIMESTAMP(CheckDate) >= 1309474800 
     AND UNIX_TIMESTAMP(CheckDate) <= 1311894000 
GROUP BY D.Username 
ORDER BY TOTAL DESC