Question

我有多个表，他们通过NAME链接。

Table PlayerDetails:

PlayerName | Gender | Grade
Mike       | Male   | 3rd
Brian      | Male   | 4th
Audrey     | Female | 3rd
Karen      | Female | 5th
Steve      | Male   | 4th


Table PlayerEval:
PlayerName | Skill-1 | Skill-2 | Skill-3 | Year
Mike       |   3     |    2    |   4     | 2014
Mike       |   3.5   |    1    |   2     | 2014
Mike       |         |    1    |         | 2014
Brian      |   3     |    2    |   4     | 2014
Karen      |   3     |         |   4     | 2014
Karen      |         |    2    |   4     | 2014
Audrey     |   3     |    2    |         | 2013
Mike       |         |    2    |   4     | 2013


Table CoachEval:
PlayerName | Skill-1 | Skill-2 | Skill-3 | Year
Mike       |   2     |    1    |   3     | 2014
Brian      |   3     |    2    |   4     | 2014
Karen      |   3     |    2    |   4     | 2014
Karen      |   3     |    2    |   4     | 2013
Audrey     |   3     |    2    |   4     | 2013

Table TeamInfo:
PlayerName | Team  | Year
Mike       | Team1 | 2014
Mike       | Team2 | 2013
Brian      | Team1 | 2014
Karen      | Team3 | 2014

关键点是我想在PlayerEval和CoachEval中为PlayerDetails表中的所有名称求和。玩家可能存在也可能不存在于PlayerEval或CoachEval表中，或者它们可能存在，但前几年 - 我只想要2014年的值。还显示团队信息（如果存在）。我写了一个让我接近的程序，但我通常总是错过一些数据。

上表中的技能在下面的查询中有所不同。示例Skill_1是BallControl_dribbling，Skill_2是1v1_dribbling等等......

谢谢，麦克

Procedure:
declare y int;
declare g int;
declare gender varchar(20);
set y = 1;
set g = 1;

SELECT @x := count(*) from AgeGroups;   # this table just includes a list of ages[U9,U10,U11,U12,U13,U14]

while g < 3 DO
   if (g = 1) then 
      set gender = 'Male';
   else
      set gender = 'FeMale';
   end if;

while y < 8 DO
     SELECT @grade := Grade from AgeGroups where id=y;
     SELECT @v3 := Age from AgeGroups where id=y;
     SELECT @TotalRegistered := count(*) from PlayerDetails WHERE PlayerDetails.Grade = @grade AND PlayerDetails.Gender=gender;

     SELECT PlayerDetails.id,PlayerDetails.PlayerName, PlayerEvals.PlayerName, TeamInfo.NAME,
     PlayerDetails.Gender, PlayerDetails.Grade, 
     round(sum( ifnull( `PlayerEvals`.`BallControl_dribbling` , 0 ) + ifnull(`PlayerEvals`.`1v1_dribbling` , 0 ) + ifnull( `PlayerEvals`.`1_Touch_No-pressure_receiving` , 0 ) + ifnull( `PlayerEvals`.`1_Touch_with-pressure_receiving` , 0 ) + ifnull( `PlayerEvals`.`Air_No-pressure_receiving` , 0 ) + ifnull( `PlayerEvals`.`Air_with-pressure_receiving` , 0 ) + ifnull( `PlayerEvals`.`weighted_pass_passing` , 0 ) + ifnull( `PlayerEvals`.`combination_play_passing` , 0 ) + ifnull( `PlayerEvals`.`crossing_passing` , 0 ) + ifnull( `PlayerEvals`.`chipping_passing` , 0 ) + ifnull( `PlayerEvals`.`placement_shooting` , 0 ) + ifnull( `PlayerEvals`.`awareness_shooting` , 0 ) + ifnull( `PlayerEvals`.`1v1_defense` , 0 ) + ifnull( `PlayerEvals`.`2v2_defense` , 0 ) ) / ( count( `PlayerEvals`.`BallControl_dribbling` ) + count( `PlayerEvals`.`1v1_dribbling` ) + count( `PlayerEvals`.`1_Touch_No-pressure_receiving` ) + count( `PlayerEvals`.`1_Touch_with-pressure_receiving` ) + count( `PlayerEvals`.`Air_No-pressure_receiving` ) + count( `PlayerEvals`.`Air_with-pressure_receiving` ) + count( `PlayerEvals`.`weighted_pass_passing` ) + count( `PlayerEvals`.`combination_play_passing` ) + count( `PlayerEvals`.`crossing_passing` ) + count( `PlayerEvals`.`chipping_passing` ) + count( `PlayerEvals`.`placement_shooting` ) + count( `PlayerEvals`.`awareness_shooting` ) + count( `PlayerEvals`.`1v1_defense` ) + count( `PlayerEvals`.`2v2_defense` ) ),4) AS Tryout_Average,
     round(sum( ifnull( `CoachEvals`.`BallControl_dribbling` , 0 ) + ifnull( `CoachEvals`.`1v1_dribbling` , 0 ) + ifnull( `CoachEvals`.`1_Touch_No-pressure_receiving` , 0 ) + ifnull( `CoachEvals`.`1_Touch_with-pressure_receiving` , 0 ) + ifnull( `CoachEvals`.`Air_No-pressure_receiving` , 0 ) + ifnull( `CoachEvals`.`Air_with-pressure_receiving` , 0 ) + ifnull( `CoachEvals`.`weighted_pass_passing` , 0 ) + ifnull( `CoachEvals`.`combination_play_passing` , 0 ) + ifnull( `CoachEvals`.`crossing_passing` , 0 ) + ifnull( `CoachEvals`.`chipping_passing` , 0 ) + ifnull( `CoachEvals`.`placement_shooting` , 0 ) + ifnull( `CoachEvals`.`awareness_shooting` , 0 ) + ifnull( `CoachEvals`.`1v1_defense` , 0 ) + ifnull( `CoachEvals`.`2v2_defense` , 0 ) + ifnull( `CoachEvals`.`offense_heading`, 0 ) + ifnull( `CoachEvals`.`defense_heading` , 0 ) + ifnull( `CoachEvals`.`5v5_teamdefense` , 0 ) ) / ( count( `CoachEvals`.`BallControl_dribbling` ) + count( `CoachEvals`.`1v1_dribbling` ) + count( `CoachEvals`.`1_Touch_No-pressure_receiving` ) + count( `CoachEvals`.`1_Touch_with-pressure_receiving` ) + count( `CoachEvals`.`Air_No-pressure_receiving` ) + count( `CoachEvals`.`Air_with-pressure_receiving` ) + count( `CoachEvals`.`weighted_pass_passing` ) + count( `CoachEvals`.`combination_play_passing` ) + count( `CoachEvals`.`crossing_passing` ) + count( `CoachEvals`.`chipping_passing` ) + count( `CoachEvals`.`placement_shooting` ) + count( `CoachEvals`.`awareness_shooting` ) + count( `CoachEvals`.`1v1_defense` ) + count( `CoachEvals`.`2v2_defense` ) +count(`CoachEvals`.`offense_heading`) +count(`CoachEvals`.`defense_heading`) + count( `CoachEvals`.`5v5_teamdefense`) + count(`CoachEvals`.`offense_heading`) + count(`CoachEvals`.`defense_heading`) ),4) AS Coach_Average, 
    round(sum( ifnull( `CoachEvals`.`GeneralAttitude`, 0)) / (   count(`CoachEvals`.`GeneralAttitude`) ),4) AS Coach_General_Attitude, 
    round(sum( ifnull( `CoachEvals`.`AttendsPractice`, 0)) / ( count(`CoachEvals`.`AttendsPractice`) ),4) AS Coach_Attends_Practice,
    round(sum( ifnull( `CoachEvals`.`AbilitytoLearn`, 0)) / ( count(`CoachEvals`.`AbilitytoLearn`) ),4) AS Coach_Ability_to_Learn,
    round(sum( ifnull( `CoachEvals`.`Goalie`, 0) ) / ( count(`CoachEvals`.`Goalie`) ),4) AS Coach_Goalie
     FROM `PlayerDetails` 
     LEFT JOIN PlayerEvals ON PlayerDetails.PlayerName=PlayerEvals.PlayerName
     AND (PlayerEvals.Date=@try1 OR PlayerEvals.Date=@try2)
     LEFT JOIN CoachEvals ON (PlayerDetails.PlayerName=CoachEvals.PlayerName)
     LEFT JOIN TeamInfo ON (PlayerDetails.PlayerName = TeamInfo.PlayerName)
     WHERE PlayerEvals.Date is NULL or (PlayerEvals.Date=@try1 OR PlayerEvals.Date=@try2)
      AND PlayerDetails.Gender = gender
      AND PlayerDetails.Grade = @grade
      group by PlayerDetails.Gender,PlayerDetails.PlayerName
      order by Tryout_Average;

      set y = y + 1;
   END WHILE;
   set g = g + 1;
   set y = 1;
END WHILE;
END

预期产出：

Playername    TEAM NAME    Gender    Grade      Tryout_Average    Coach_Average 
Mike           Team1        Male     3rd Grade    2.07               3 
Brian          NULL         Male     4th Grade    3                  3 
Steve          NULL         Male     4th Grade    NULL               NULL 
Audrey         NULL         Female   3rd Grade    NULL               NULL 
Karen          NULL         Female   5th Grade    3.25               3

在查询中计算Tryout_Average和Coach_Average的平均值。如果它们不是NULL，我使用Skill-1，Skill-2，Skill-3的总和，然后除以值的计数。

mysql：基于多个条件求和数据

0 个答案: