如何在子查詢中使用兩個where子句？

我需要查詢一組數據（第一個WHERE）並基於該結果的子查詢與另一個WHERE。使用下面的代碼我得到如何在子查詢中使用兩個where子句？

**Incorrect syntax near the keyword 'where'.**

你能告訴我我在做什麼錯在這裏？

select * from [Analytics] 
    WHERE 
    DateCreated >= '2014-05-01' 
    AND DateCreated < '2014-06-01' 
    AND Identification = 'ElementFlow' 
    where exists 
    (
    SELECT * 
    FROM [Analytics] 
    WHERE Location = 'x.DetailsAdvertisement' 
    OR Location = 'x.DetailsShop' 
    OR Location = 'x.None' 
    OR Location = 'x' 
    )

來源

2014-06-18 GibboK

您是來自同一個表中選擇。那麼爲什麼你需要一個子查詢？ –

用'和'替換第二個'where'。 –

只是一句話：一旦你用AND替換第二個WHERE，那麼exists子句是正確的。如果您在子查詢中查找的數據存在，它將選擇**所有**指定記錄，否則將選擇** none **。這是因爲子查詢與主查詢中的記錄沒有關係。這是需要的嗎？ –

你應該改變where exists到and exists這應該是它。

來源

2014-06-18 11:14:28

您正在使用WHERE子句兩次。用AND替換第二個WHERE，它應該可以工作。

select * from [Analytics] 
WHERE 
DateCreated >= '2014-05-01' 
AND DateCreated < '2014-06-01' 
AND Identification = 'ElementFlow' 
AND exists 
(
SELECT * 
FROM [Analytics] 
WHERE Location = 'x.DetailsAdvertisement' 
OR Location = 'x.DetailsShop' 
OR Location = 'x.None' 
OR Location = 'x' 
)

來源

2014-06-18 11:14:55 ncdreamy

通過移除試試這個where子句來兩次

select * from [Analytics] 
    WHERE 
    DateCreated >= '2014-05-01' 
    AND DateCreated < '2014-06-01' 
    AND Identification = 'ElementFlow' 
    AND exists 
    (
    SELECT * 
    FROM [Analytics] 
    WHERE Location = 'x.DetailsAdvertisement' 
    OR Location = 'x.DetailsShop' 
    OR Location = 'x.None' 
    OR Location = 'x' 
    )

或者你試試這個...

select * from [Analytics] 
     WHERE 
     DateCreated >= '2014-05-01' 
     AND DateCreated < '2014-06-01' 
     AND Identification = 'ElementFlow' 
     AND location in ('x.DetailsAdvertisement' ,'x.DetailsShop','x.None','x')

來源

2014-06-18 11:15:52

使用一個以上的水平，它是怎樣的聲音？

SELECT * FROM 
(
    select * from [Analytics] 
    where exists 
    (
    SELECT * 
    FROM [Analytics] 
    WHERE Location = 'x.DetailsAdvertisement' 
    OR Location = 'x.DetailsShop' 
    OR Location = 'x.None' 
    OR Location = 'x' 
    ) 
) a 
WHERE 
    DateCreated >= '2014-05-01' 
    AND DateCreated < '2014-06-01' 
    AND Identification = 'ElementFlow'

來源

2014-06-18 11:19:06 ydoow

試試這個：

SELECT * 
FROM [Analytics] 
WHERE DateCreated >= '2014-05-01' AND DateCreated < '2014-06-01' 
     AND Identification = 'ElementFlow' 
     AND Location IN('x.DetailsAdvertisement', 'x.DetailsShop', 'x.None', 'x')

來源

2014-06-18 11:22:07 Jesuraja

如何在子查詢中使用兩個where子句？

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