爲使用時間範圍提取數據優化MySQL查詢

我正在使用Google Chart API構建產品銷售報告的折線圖，並且每天都基於在循環中運行相同的查詢來分離數據每天都使用UNION ALL作爲膠水。爲使用時間範圍提取數據優化MySQL查詢

E.g.全年的報告將重複查詢，使用UNION ALL 365次。

我猜這不是一個最好的做法 - 例如，如果任何人會如此善良，並指向我如何優化這個查詢的正確方向，我將不勝感激。

SELECT SUM(op.qty) AS qty 
    FROM uc_order_products op 
    LEFT JOIN uc_orders o ON o.order_id = op.order_id 
    LEFT JOIN node n ON n.nid = op.nid 
    LEFT JOIN node_type nt ON nt.type = n.type 
    WHERE (o.created > 1247695200) AND (o.created < 1247781600) 
    AND (o.order_status = 'completed') 
    AND (nt.type = 'book' OR nt.type = 'digital_movie') 

    UNION ALL 

    SELECT SUM(op.qty) AS qty 
    FROM uc_order_products op 
    LEFT JOIN uc_orders o ON o.order_id = op.order_id 
    LEFT JOIN node n ON n.nid = op.nid 
    LEFT JOIN node_type nt ON nt.type = n.type 
    WHERE (o.created > 1247781600) AND (o.created < 1247868000) 
    AND (o.order_status = 'completed') 
    AND (nt.type = 'book' OR nt.type = 'digital_movie') 

    UNION ALL 

    SELECT SUM(.......

感謝所有快速作出迴應！從jspcal查詢例如，我的查詢弄成這個樣子：

SELECT SUM(op.qty) AS qty, DATE_FORMAT(FROM_UNIXTIME(o.created),'%d-%m-%Y') AS day 
    FROM uc_order_products op 
    LEFT JOIN uc_orders o ON o.order_id = op.order_id 
    LEFT JOIN node n ON n.nid = op.nid 
    LEFT JOIN node_type nt ON nt.type = n.type 
    WHERE (o.created > 1247695200) AND (o.created < 1263596400) 
    AND (o.order_status = 'completed') 
    AND (nt.type = 'book' OR nt.type = 'digital_movie') 
    GROUP BY day

並與PHP，我結合一個完整的日期範圍陣列（相同排列的鍵與strtotime($data->day)從查詢結果），以獲得天沒有銷售。

來源

2010-01-16 Borgenk

也許我失蹤了s這裏有什麼，但爲什麼你不會在創建時運行一個查詢>時間範圍的開始和時間範圍的結束？ – 2010-01-16 11:53:13

可以通過天團：

select sum(op.qty) as qty, date_format(o.created, '%Y-%m-%d') as day 
from ... where ... o.created >= subdate(now(), interval 1 year) and 
o.created <= now() group by day order by day

將報告和在數據一年中的每一天設置

來源

2010-01-16 12:03:26 jspcal

您前人的精力能夠

WHERE (o.created > 1247695200) AND (o.created < 1247781600) 
AND (o.order_status = 'completed') 
AND (nt.type = 'book' OR nt.type = 'digital_movie') 


WHERE (o.created > 1247781600) AND (o.created < 1247868000)  
AND (o.order_status = 'completed')  
AND (nt.type = 'book' OR nt.type = 'digital_movie') 

....

轉換的東西像

WHERE (
       (o.created > 1247695200) AND (o.created < 1247781600) 
      OR (o.created > 1247781600) AND (o.created < 1247868000) 
      ... 
     ) 
AND (o.order_status = 'completed') 
AND (nt.type = 'book' OR nt.type = 'digital_movie')

來源

2010-01-16 12:16:49

爲使用時間範圍提取數據優化MySQL查詢

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