MySQL查詢錯誤...它不顯示確切的數據值

Question

我想問我的MySQL查詢是否有什麼問題（並且可能要求提供關於如何更好地執行此操作的建議）？我試圖在5天的範圍內生成每日報告......問題是它不顯示確切的數據，它填滿了沒有數據的日子。

這是下面的MySQL查詢例子中： 在我的數據庫，週一，週三和週四與DATAS ..但如果我將運行使用此查詢報告，週二將有一個現成的它在我的數據庫中實際上沒有的數據。雖然IT，NonIt和合計表計數是正確的。我在計算僅在天中的數據時出錯。請幫助我...我不知道錯誤在哪裏。

爲了更好地解釋我的意思，這裏是我的查詢的輸出結果的截圖： http://www.fileden.com/files/2011/7/27/3174077//daily.JPG

SELECT a.specialist_partner_ID, ss.first_name as SS, ssa.first_name as SSA 

,count(CASE WHEN a.receivedDate BETWEEN '2011-09-5' AND '2011-09-9' 
THEN a.job_order_number ELSE null END) As MON 

,count(CASE WHEN a.receivedDate BETWEEN date_add('2011-09-5', INTERVAL 1 DAY) 
AND DATE_ADD('2011-09-9', INTERVAL 1 DAY) THEN a.job_order_number ELSE null END) As TUE 

,count(CASE WHEN a.receivedDate BETWEEN date_add('2011-09-5', INTERVAL 2 DAY) 
AND DATE_ADD('2011-09-9', INTERVAL 2 DAY) THEN a.job_order_number ELSE null END) As WED 

,count(CASE WHEN a.receivedDate BETWEEN date_add('2011-09-5', INTERVAL 3 DAY) 
AND DATE_ADD('2011-09-9', INTERVAL 3 DAY) THEN a.job_order_number ELSE null END) As THU 

,count(CASE WHEN a.receivedDate BETWEEN date_add('2011-09-5', INTERVAL 4 DAY) 
AND DATE_ADD('2011-09-9', INTERVAL 4 DAY) THEN a.job_order_number ELSE null END) As FRI 

,count(case WHEN (a.receivedDate between '2011-09-5 00:00:00' and '2011-09-9 23:59:59' 
and jo.job_order_type LIKE 'IT') then a.job_order_number else null end) as IT 

,count(case WHEN (a.receivedDate between '2011-09-5 00:00:00' and '2011-09-9 23:59:59' 
and jo.job_order_type LIKE 'Non-IT') then a.job_order_number else null end) as NonIT 

,count(a.job_order_number) As Total FROM jo_partner a 

left join specialist_partner sp on a.specialist_Partner_ID = sp.specialistPartnerID  
left join staffing_specialist_asst ssa on sp.SSA_ID = ssa.SSA_ID 
left join staffing_specialist ss on sp.SS_ID = ss.SS_ID 
left join job_order jo on a.job_order_number = jo.job_order_number 
left join candidate_jo cjo on a.JO_partner_ID= cjo.jo_partner_ID 
left join candidate can on cjo.candidate_jo_ID= can.candidate_ID 
WHERE a.receivedDate BETWEEN '2011-09-5 00:00:00' AND '2011-09-9 23:59:59' 
GROUP BY a.specialist_partner_ID 

Answer 1

我想你錯了日期。對於每天的專欄，您從5天內選擇數據，這沒有意義。 因此，而不是：

count(CASE WHEN a.receivedDate BETWEEN date_add('2011-09-5', INTERVAL 1 DAY) 
AND DATE_ADD('2011-09-9', INTERVAL 1 DAY) THEN a.job_order_number ELSE null END) As TUE 

你應該有：

count(CASE WHEN a.receivedDate BETWEEN date_add('2011-09-5', INTERVAL 1 DAY) 
and DATE_ADD('2011-09-5', INTERVAL 2 DAY) THEN a.job_order_number ELSE null END) As TUE 

甚至更​​好：

count(CASE WHEN a.receivedDate >= date_add('2011-09-5', INTERVAL 1 DAY) 
and a.receivedDate < DATE_ADD('2011-09-5', INTERVAL 2 DAY) THEN a.job_order_number ELSE null END) As TUE 

同爲天的休息。