[MySQL]优化报告每月摘要

分类：编程问答

如何解决[MySQL]优化报告每月摘要

| 目前，我有查询来输出一天的平均速度和最大速度作为我要优化的查询，像这样 
SELECT V_VEHICLEID,V_LICENSENO,(SELECT ROUND(AVG(WP_SPEED),2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 1 AND WP_VEHICLEID = V_VEHICLEID) AS AVG1,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 2 AND WP_VEHICLEID = V_VEHICLEID) AS AVG2,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 3 AND WP_VEHICLEID = V_VEHICLEID) AS AVG3,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 4 AND WP_VEHICLEID = V_VEHICLEID) AS AVG4,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 5 AND WP_VEHICLEID = V_VEHICLEID) AS AVG5,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 6 AND WP_VEHICLEID = V_VEHICLEID) AS AVG6,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 7 AND WP_VEHICLEID = V_VEHICLEID) AS AVG7,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 8 AND WP_VEHICLEID = V_VEHICLEID) AS AVG8,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 9 AND WP_VEHICLEID = V_VEHICLEID) AS AVG9,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 10 AND WP_VEHICLEID = V_VEHICLEID) AS AVG10,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 11 AND WP_VEHICLEID = V_VEHICLEID) AS AVG11,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 12 AND WP_VEHICLEID = V_VEHICLEID) AS AVG12,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 13 AND WP_VEHICLEID = V_VEHICLEID) AS AVG13,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 14 AND WP_VEHICLEID = V_VEHICLEID) AS AVG14,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 15 AND WP_VEHICLEID = V_VEHICLEID) AS AVG15,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 16 AND WP_VEHICLEID = V_VEHICLEID) AS AVG16,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 17 AND WP_VEHICLEID = V_VEHICLEID) AS AVG17,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 18 AND WP_VEHICLEID = V_VEHICLEID) AS AVG18,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 19 AND WP_VEHICLEID = V_VEHICLEID) AS AVG19,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 20 AND WP_VEHICLEID = V_VEHICLEID) AS AVG20,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 21 AND WP_VEHICLEID = V_VEHICLEID) AS AVG21,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 22 AND WP_VEHICLEID = V_VEHICLEID) AS AVG22,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 23 AND WP_VEHICLEID = V_VEHICLEID) AS AVG23,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 24 AND WP_VEHICLEID = V_VEHICLEID) AS AVG24,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 25 AND WP_VEHICLEID = V_VEHICLEID) AS AVG25,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 26 AND WP_VEHICLEID = V_VEHICLEID) AS AVG26,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 27 AND WP_VEHICLEID = V_VEHICLEID) AS AVG27,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 28 AND WP_VEHICLEID = V_VEHICLEID) AS AVG28,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 29 AND WP_VEHICLEID = V_VEHICLEID) AS AVG29,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 30 AND WP_VEHICLEID = V_VEHICLEID) AS AVG30,2) 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 MAX1,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 2 AND WP_VEHICLEID = V_VEHICLEID) AS MAX2,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 3 AND WP_VEHICLEID = V_VEHICLEID) AS MAX3,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 4 AND WP_VEHICLEID = V_VEHICLEID) AS MAX4,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 5 AND WP_VEHICLEID = V_VEHICLEID) AS MAX5,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 6 AND WP_VEHICLEID = V_VEHICLEID) AS MAX6,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 7 AND WP_VEHICLEID = V_VEHICLEID) AS MAX7,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 8 AND WP_VEHICLEID = V_VEHICLEID) AS MAX8,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 9 AND WP_VEHICLEID = V_VEHICLEID) AS MAX9,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 10 AND WP_VEHICLEID = V_VEHICLEID) AS MAX10,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 11 AND WP_VEHICLEID = V_VEHICLEID) AS MAX11,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 12 AND WP_VEHICLEID = V_VEHICLEID) AS MAX12,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 13 AND WP_VEHICLEID = V_VEHICLEID) AS MAX13,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 14 AND WP_VEHICLEID = V_VEHICLEID) AS MAX14,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 15 AND WP_VEHICLEID = V_VEHICLEID) AS MAX15,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 16 AND WP_VEHICLEID = V_VEHICLEID) AS MAX16,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 17 AND WP_VEHICLEID = V_VEHICLEID) AS MAX17,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 18 AND WP_VEHICLEID = V_VEHICLEID) AS MAX18,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 19 AND WP_VEHICLEID = V_VEHICLEID) AS MAX19,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 20 AND WP_VEHICLEID = V_VEHICLEID) AS MAX20,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 21 AND WP_VEHICLEID = V_VEHICLEID) AS MAX21,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 22 AND WP_VEHICLEID = V_VEHICLEID) AS MAX22,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 23 AND WP_VEHICLEID = V_VEHICLEID) AS MAX23,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 24 AND WP_VEHICLEID = V_VEHICLEID) AS MAX24,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 25 AND WP_VEHICLEID = V_VEHICLEID) AS MAX25,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 26 AND WP_VEHICLEID = V_VEHICLEID) AS MAX26,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 27 AND WP_VEHICLEID = V_VEHICLEID) AS MAX27,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 28 AND WP_VEHICLEID = V_VEHICLEID) AS MAX28,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 29 AND WP_VEHICLEID = V_VEHICLEID) AS MAX29,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 30 AND WP_VEHICLEID = V_VEHICLEID) AS MAX30,2) FROM WAYPOINTS WHERE DAY(WP_DATETIME) = 31 AND WP_VEHICLEID = V_VEHICLEID) AS MAX31
FROM VEHICLES
WHERE V_USER = \'tc\'
已经尝试过此查询，但我希望结果表（以html形式）看起来像上面的查询 
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
结果表 
========================================================
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  | .......................
========================================================
有什么办法吗？     

解决方法

        试试这样的事情- 
SELECT
  v.V_VEHICLEID,ROUND(AVG(IF(DAY(WP_DATETIME) = 1,wp.WP_SPEED,NULL)),2) AS AVG1,ROUND(AVG(IF(DAY(WP_DATETIME) = 2,2) AS AVG2,ROUND(AVG(IF(DAY(WP_DATETIME) = 3,2) AS AVG3,...
  ROUND(MAX(IF(DAY(WP_DATETIME) = 1,2) AS MAX1,ROUND(MAX(IF(DAY(WP_DATETIME) = 2,2) AS MAX2,ROUND(MAX(IF(DAY(WP_DATETIME) = 3,2) AS MAX3,...
FROM VEHICLES v
  JOIN WAYPOINTS wp ON wp.WP_VEHICLEID = v.V_VEHICLEID
GROUP BY
  wp.WP_VEHICLEID
    ,        代替上面的庞然大物查询，创建一个带有数字1-31的小表，然后加入该表并添加一些GROUP BY。 您将不会完全有自己的表，而是将有一堆带有DATE，VEHICLEID的行。按日期排序，然后按车辆编号排序。您需要遍历它来构建表。     

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