SQL子句之間的多個列

我嘗試通過分句間來實現查詢，但對於S_E1在此SQL子句之間的多個列

第一查詢的一些問題：

該查詢返回，我需要精確的數據，在這裏數據數是43

select RECORD_TIMESTAMP as DateRecorded, ROUND (S_E1 ,2)as S_E1 
from TBL_SENSORS 
Where RECORD_TIMESTAMP Between '4/28/2012 12 :00 AM' 
          and '5/17/2012 12 :00 AM' 
And (S_E1 Between 10 And 100)

第二個查詢爲S_E2：

該查詢返回，我需要精確的數據，在這裏數據計數68

select RECORD_TIMESTAMP as DateRecorded, ROUND (S_E2 ,2)as S_E2 
from TBL_SENSORS 
Where RECORD_TIMESTAMP Between '4/28/2012 12 :00 AM' 
          and '5/17/2012 12 :00 AM' 
And (S_E2 Between 10 And 100)

問題：

但是，當我在一個查詢中組合使用這些以查詢則給出錯誤data.It給了我73個rows.I覺得應該給111行

select RECORD_TIMESTAMP as DateRecorded, 
     ROUND (S_E2 ,2)as S_E2, 
     ROUND (S_E1 ,2) as S_E1 
from TBL_SENSORS 
Where RECORD_TIMESTAMP Between '4/28/2012 12 :00 AM' 
          and '5/17/2012 12 :00 AM' 
And (S_E2 Between 10 And 100) 
and (S_E1 Between 10 And 100 )

請給一些想法，我錯了我在這裏..

來源

2012-05-17 Sunny

使用OR而不是AND opeartor

SELECT RECORD_TIMESTAMP AS DateRecorded, 
     Round (S_E2, 2) AS S_E2, 
     Round (S_E1, 2) AS S_E1 
FROM TBL_SENSORS 
WHERE RECORD_TIMESTAMP BETWEEN '4/28/2012 12 :00 AM' AND '5/17/2012 12 :00 AM' 
     or (S_E2 BETWEEN 10 AND 100) 
     or (S_E1 BETWEEN 10 AND 100)

在查詢中，不保證您將獲得111條記錄，因爲可能存在兩個條件的常見記錄。

條件1 - (S_E2 BETWEEN 10 AND 100)

條件2 - (S_E1 BETWEEN 10 AND 100)

或者

使用UNION ALL兩個查詢來獲得所有記錄（111）。

select RECORD_TIMESTAMP as DateRecorded, ROUND (S_E1 ,2)as S_E1, 0 as S_E2 
from TBL_SENSORS 
Where RECORD_TIMESTAMP Between '4/28/2012 12 :00 AM' and '5/17/2012 12 :00 AM' 
And (S_E1 Between 10 And 100) 

UNION ALL 

select RECORD_TIMESTAMP as DateRecorded, 0 as S_E1, ROUND (S_E2 ,2) as S_E2 
from TBL_SENSORS 
Where RECORD_TIMESTAMP Between '4/28/2012 12 :00 AM' 
and '5/17/2012 12 :00 AM' 
And (S_E2 Between 10 And 100)

來源

2012-05-17 10:03:59

。 –

+1現在更喜歡它:) –

@Romil謝謝你的答覆。你說得對，我現在正在或現在工作。但問題是現在SE_1或S_E2也顯示-ve values.There計數是73.數據是如此珍貴這裏是因爲它處理實時傳感器。你有任何解決方案或想法。 – Sunny

我認爲你應該在兩個語句之間進行聯合，或者你應該使用「或」而不是「與」。

select RECORD_TIMESTAMP as DateRecorded,ROUND (S_E2 ,2)as S_E2,ROUND (S_E1 ,2)as S_E1 from TBL_SENSORS Where RECORD_TIMESTAMP Between '4/28/2012 12 :00 AM' and '5/17/2012 12 :00 AM' AND ((S_E2 Between 10 And 100) OR(S_E1 Between 10 And 100))

來源

2012-05-17 10:04:03

+1你是對的！ :) –

非常感謝你 –

問題在於S_E2和S_E1的限制。

爲了他們像預期，你必須使用UNION ALL工作：

select RECORD_TIMESTAMP as DateRecorded, ROUND (S_E1 ,2)as S_E 
from TBL_SENSORS 
Where RECORD_TIMESTAMP Between '4/28/2012 12 :00 AM' and '5/17/2012 12 :00 AM' 
And (S_E1 Between 10 And 100) 

UNION ALL 

select RECORD_TIMESTAMP as DateRecorded, ROUND (S_E2 ,2)as S_E 
from TBL_SENSORS 
Where RECORD_TIMESTAMP Between '4/28/2012 12 :00 AM' 
and '5/17/2012 12 :00 AM' 
And (S_E2 Between 10 And 100)

，或者你使用一個OR代替AND的是這樣的：

select RECORD_TIMESTAMP as DateRecorded, 
     ROUND (S_E2 ,2)as S_E2, 
     ROUND (S_E1 ,2) as S_E1 
from TBL_SENSORS 
Where RECORD_TIMESTAMP Between '4/28/2012 12 :00 AM' 
          and '5/17/2012 12 :00 AM' 
And ((S_E2 Between 10 And 100) OR (S_E1 Between 10 And 100) )

由於只限制的區別來自S_E1和S_E2列，如果您使用AND，則表示所有記錄必須同時尊重限制。在分離的查詢中，他們只尊重一個，所以你必須在主查詢中這樣做。

來源

2012-05-17 10:06:06

更改布爾邏輯，通過將多餘的括號和替換最後一個爲OR他沒有使用UNION任何地方

select RECORD_TIMESTAMP as DateRecorded, 
     ROUND (S_E2 ,2)as S_E2, 
     ROUND (S_E1 ,2) as S_E1 
from TBL_SENSORS 
Where RECORD_TIMESTAMP Between '4/28/2012 12 :00 AM' 
          and '5/17/2012 12 :00 AM' 
And ((S_E2 Between 10 And 100) 
OR (S_E1 Between 10 And 100 ))

來源

2012-05-17 10:09:42 Arnoldiusss

+1這就是解決方案:) –

SQL子句之間的多個列

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