2011-06-14 84 views
0

目前,我有查詢一天,我要優化查詢的是輸出平均和最大速度,這樣[MySQL的]優化報表按月彙總


SELECT V_VEHICLEID, V_LICENSENO, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 1 AND WP_VEHICLEID = V_VEHICLEID) AS AVG1, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 2 AND WP_VEHICLEID = V_VEHICLEID) AS AVG2, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 3 AND WP_VEHICLEID = V_VEHICLEID) AS AVG3, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 4 AND WP_VEHICLEID = V_VEHICLEID) AS AVG4, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 5 AND WP_VEHICLEID = V_VEHICLEID) AS AVG5, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 6 AND WP_VEHICLEID = V_VEHICLEID) AS AVG6, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 7 AND WP_VEHICLEID = V_VEHICLEID) AS AVG7, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 8 AND WP_VEHICLEID = V_VEHICLEID) AS AVG8, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 9 AND WP_VEHICLEID = V_VEHICLEID) AS AVG9, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 10 AND WP_VEHICLEID = V_VEHICLEID) AS AVG10, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 11 AND WP_VEHICLEID = V_VEHICLEID) AS AVG11, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 12 AND WP_VEHICLEID = V_VEHICLEID) AS AVG12, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 13 AND WP_VEHICLEID = V_VEHICLEID) AS AVG13, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 14 AND WP_VEHICLEID = V_VEHICLEID) AS AVG14, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 15 AND WP_VEHICLEID = V_VEHICLEID) AS AVG15, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 16 AND WP_VEHICLEID = V_VEHICLEID) AS AVG16, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 17 AND WP_VEHICLEID = V_VEHICLEID) AS AVG17, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 18 AND WP_VEHICLEID = V_VEHICLEID) AS AVG18, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 19 AND WP_VEHICLEID = V_VEHICLEID) AS AVG19, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 20 AND WP_VEHICLEID = V_VEHICLEID) AS AVG20, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 21 AND WP_VEHICLEID = V_VEHICLEID) AS AVG21, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 22 AND WP_VEHICLEID = V_VEHICLEID) AS AVG22, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 23 AND WP_VEHICLEID = V_VEHICLEID) AS AVG23, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 24 AND WP_VEHICLEID = V_VEHICLEID) AS AVG24, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 25 AND WP_VEHICLEID = V_VEHICLEID) AS AVG25, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 26 AND WP_VEHICLEID = V_VEHICLEID) AS AVG26, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 27 AND WP_VEHICLEID = V_VEHICLEID) AS AVG27, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 28 AND WP_VEHICLEID = V_VEHICLEID) AS AVG28, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 29 AND WP_VEHICLEID = V_VEHICLEID) AS AVG29, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 30 AND WP_VEHICLEID = V_VEHICLEID) AS AVG30, 
(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 31 AND WP_VEHICLEID = V_VEHICLEID) AS AVG31, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 1 AND WP_VEHICLEID = V_VEHICLEID) AS MAX1, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 2 AND WP_VEHICLEID = V_VEHICLEID) AS MAX2, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 3 AND WP_VEHICLEID = V_VEHICLEID) AS MAX3, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 4 AND WP_VEHICLEID = V_VEHICLEID) AS MAX4, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 5 AND WP_VEHICLEID = V_VEHICLEID) AS MAX5, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 6 AND WP_VEHICLEID = V_VEHICLEID) AS MAX6, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 7 AND WP_VEHICLEID = V_VEHICLEID) AS MAX7, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 8 AND WP_VEHICLEID = V_VEHICLEID) AS MAX8, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 9 AND WP_VEHICLEID = V_VEHICLEID) AS MAX9, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 10 AND WP_VEHICLEID = V_VEHICLEID) AS MAX10, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 11 AND WP_VEHICLEID = V_VEHICLEID) AS MAX11, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 12 AND WP_VEHICLEID = V_VEHICLEID) AS MAX12, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 13 AND WP_VEHICLEID = V_VEHICLEID) AS MAX13, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 14 AND WP_VEHICLEID = V_VEHICLEID) AS MAX14, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 15 AND WP_VEHICLEID = V_VEHICLEID) AS MAX15, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 16 AND WP_VEHICLEID = V_VEHICLEID) AS MAX16, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 17 AND WP_VEHICLEID = V_VEHICLEID) AS MAX17, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 18 AND WP_VEHICLEID = V_VEHICLEID) AS MAX18, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 19 AND WP_VEHICLEID = V_VEHICLEID) AS MAX19, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 20 AND WP_VEHICLEID = V_VEHICLEID) AS MAX20, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 21 AND WP_VEHICLEID = V_VEHICLEID) AS MAX21, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 22 AND WP_VEHICLEID = V_VEHICLEID) AS MAX22, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 23 AND WP_VEHICLEID = V_VEHICLEID) AS MAX23, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 24 AND WP_VEHICLEID = V_VEHICLEID) AS MAX24, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 25 AND WP_VEHICLEID = V_VEHICLEID) AS MAX25, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 26 AND WP_VEHICLEID = V_VEHICLEID) AS MAX26, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 27 AND WP_VEHICLEID = V_VEHICLEID) AS MAX27, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 28 AND WP_VEHICLEID = V_VEHICLEID) AS MAX28, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 29 AND WP_VEHICLEID = V_VEHICLEID) AS MAX29, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 30 AND WP_VEHICLEID = V_VEHICLEID) AS MAX30, 
(SELECT ROUND(MAX(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 31 AND WP_VEHICLEID = V_VEHICLEID) AS MAX31 
FROM VEHICLES 
WHERE V_USER = 'tc' 
已經嘗試過此查詢

,但我想要的結果表(HTML)看起來像上面


SELECT WP_VEHICLEID AS VEHICLE, V_LICENSENO AS REGNO, 
DATE(WP_DATETIME) AS SUM_DATE, 
ROUND(AVG(WP_SPEED),2) AS AVG_SPEED, 
ROUND(MAX(WP_SPEED),2) AS MAX_SPEED 
FROM WAYPOINTS, VEHICLES 
WHERE MONTH(WP_DATETIME) = 6 
AND WP_ODOMETER 0 
AND V_VEHICLEID = WP_VEHICLEID 
AND V_USER = 'tc' 
GROUP BY WP_VEHICLEID, DATE(WP_DATETIME) 
ORDER BY WP_VEHICLEID, WP_DATETIME 

結果表


======================================================== 
VEHICLE|  1  |  2  |  3  |  4  | 
     ------------------------------------------------- 
     | AVG | MAX | AVG | MAX | AVG | MAX | AVG | MAX | 
======================================================== 
CAR A | 10 | 30 | 90 | 160 | ....................... 
CAR B | 50 | 90 | 0 | 0 | ....................... 
CAR C | 15 | 20 | 10 | 10 | ....................... 
======================================================== 
查詢

任何解決方案?

回答

1

嘗試是這樣的 -

SELECT 
    v.V_VEHICLEID, 

    ROUND(AVG(IF(DAY(WP_DATETIME) = 1, wp.WP_SPEED, NULL)), 2) AS AVG1, 
    ROUND(AVG(IF(DAY(WP_DATETIME) = 2, wp.WP_SPEED, NULL)), 2) AS AVG2, 
    ROUND(AVG(IF(DAY(WP_DATETIME) = 3, wp.WP_SPEED, NULL)), 2) AS AVG3, 
    ... 
    ROUND(MAX(IF(DAY(WP_DATETIME) = 1, wp.WP_SPEED, NULL)), 2) AS MAX1, 
    ROUND(MAX(IF(DAY(WP_DATETIME) = 2, wp.WP_SPEED, NULL)), 2) AS MAX2, 
    ROUND(MAX(IF(DAY(WP_DATETIME) = 3, wp.WP_SPEED, NULL)), 2) AS MAX3, 
    ... 
FROM VEHICLES v 
    JOIN WAYPOINTS wp ON wp.WP_VEHICLEID = v.V_VEHICLEID 
GROUP BY 
    wp.WP_VEHICLEID 
+0

哇真快,謝謝 – Dels 2011-06-14 12:42:04

1

而不是上面的怪物查詢,創建一個數字1-31小表,然後加入到它並添加一些GROUP BY。

你不會準確地確定你的表格,相反你會得到一堆帶有DATE,VEHICLEID的行。按日期排序,然後由vehicleid排序。你需要循環它建立你的表。

+0

關於小桌子漂亮的信息,希望能提高速度 – Dels 2011-06-14 10:13:58

+0

一兩件事,這將提高速度創造與DAY(WP_DATETIME)一列,然後索引(聯合索引與WP_VEHICLEID)。這樣,mysql不必一遍又一遍地計算相同的東西 - 尤其是它可以查找索引而不是搜索整個表。 – Ariel 2011-06-14 11:55:24