DBS HW2 Solutions.sql

-- 1
SELECT nameFirst AS `First Name`, nameLast AS `Last Name`, COUNT(allstarfull.playerID) AS `Appearances`
FROM allstarfull NATURAL JOIN master
GROUP BY playerID HAVING Appearances >= 5;
-- 2
SELECT name
FROM allstarfull NATURAL JOIN teams
GROUP BY teamID 
ORDER BY COUNT(allstarfull.teamID) DESC 
LIMIT 10;
-- 3
SELECT name AS `Team Name`, `Team Salary`
FROM (
  SELECT *
  FROM (
         SELECT
           yearID,
           teamID,
           SUM(salary) AS `Team Salary`
         FROM salaries
         GROUP BY yearID, teamID
         ORDER BY yearID, `Team Salary` DESC
       ) AS `RES1`
  GROUP BY yearID
) AS `RES2` JOIN teams ON `RES2`.yearID = teams.yearID AND `RES2`.teamID = teams.teamID;
-- 4
SELECT `Year`, nameFirst AS `First Name`, nameLast AS `Last Name`, `Batting Average`
FROM (
  SELECT *
  FROM (
    SELECT
      yearID AS `Year`,
      H / AB AS `Batting Average`,
      playerID
    FROM batting
    WHERE AB > 100 AND yearID >= 1956 AND stint = 1
    GROUP BY `Year`, playerID
    ORDER BY `Year`, `Batting Average` DESC
  ) AS `AllBatters`
  WHERE EXISTS(
    SELECT *
    FROM (
      SELECT *
      FROM (
        SELECT
          yearID AS `YearT`,
          H / AB AS `Batting AverageT`,
          playerID
        FROM batting
        WHERE AB > 100 AND yearID >= 1956 AND stint = 1
        GROUP BY `YearT`, playerID
        ORDER BY `YearT`, `Batting AverageT` DESC
      ) AS `Thing`
      GROUP BY `YearT`
    ) AS `WinnyBatters`
    WHERE `WinnyBatters`.`YearT` = `Year` AND `WinnyBatters`.`Batting AverageT` = `Batting Average`
  )
) AS `RES` NATURAL JOIN master
ORDER BY `Year`, `Batting Average` DESC
-- 5
SELECT nameFirst AS `First Name`, nameLast AS `Last Name`, `College`
FROM (
  SELECT playerID, schoolID AS "College"
  FROM (
         SELECT DISTINCT
           playerID,
           schoolID
         FROM (
                SELECT playerID
                FROM halloffame
                WHERE inducted = "Y" AND EXISTS(
                    SELECT halloffame.playerID
                    FROM collegeplaying
                    WHERE halloffame.playerID = collegeplaying.playerID
                )
              ) AS `RES` NATURAL JOIN collegeplaying
       ) AS `RES2`
) AS `RES3` NATURAL JOIN master
-- 6
SELECT AVG(`RES2`.`Appearances`)
FROM (
  SELECT
    SUM(G_ALL) AS `Appearances`
  FROM (
         SELECT playerID, G_All
         FROM appearances
         WHERE EXISTS(
             SELECT playerID
             FROM managers
             WHERE appearances.playerID = managers.playerID
         )
       ) AS `RES`
  GROUP BY playerID
) AS `RES2`
-- 7
SELECT `Winning Team Salary`, `Average Team Salary`
FROM (
  SELECT
    yearID,
    name AS `Team Name`,
    `Winning Team Salary`
  FROM (
         SELECT *
         FROM (
                SELECT
                  yearID,
                  teamID,
                  SUM(salary) AS `Winning Team Salary`
                FROM salaries
                GROUP BY yearID, teamID
                ORDER BY yearID, `Winning Team Salary` DESC
              ) AS `RES1`
       ) AS `RES2` NATURAL JOIN teams
        WHERE WSWin = 'Y'
) AS `RESL` NATURAL JOIN (
  SELECT
    yearID,
    AVG(`Team Salary`) as `Average Team Salary`
  FROM (
         SELECT
           yearID,
           teamID,
           SUM(salary) AS `Team Salary`
         FROM salaries
         GROUP BY yearID, teamID
         ORDER BY yearID, `Team Salary` DESC
       ) AS `RES1`
  GROUP BY yearID
  ) AS `RESR`;
-- 8
SELECT yearID, teamID, nameFirst as `First Name`, nameLast as `Last Name`
FROM (
  SELECT
    managers.yearID,
    managers.teamID,
    playerID
  FROM (
         SELECT
           yearID,
           teamID
         FROM (
                -- GET ALL WINNERS
                SELECT
                  yearID,
                  W AS `WinnersWins`
                FROM teams
                WHERE WSWin = 'Y'
              ) AS `WINNERS` NATURAL JOIN (
                                            -- GET ALL LOSERS
                                            SELECT
                                              yearID,
                                              teamID,
                                              W
                                            FROM teams
                                            WHERE WSWin != 'Y'
                                          ) AS `LOSERS`
         WHERE W > WinnersWins
       ) AS `BigShots`
    JOIN managers ON `BigShots`.yearID = managers.yearID AND `BigShots`.teamID = managers.teamID
) AS `WeGotDemIDs` LEFT JOIN master ON `WeGotDemIDs`.`playerID` = master.`playerID`
ORDER BY yearID;
-- 9
SELECT yearID, teamID, park AS `Park Name`, attendance / G AS `Average Attendance`
FROM teams
WHERE
  WSWin = 'Y' AND
  G IS NOT NULL AND
  attendance IS NOT NULL
-- 10
SELECT yearID, teamID, park, `Winning Average Attendance`, `Non-Winning Average Attendance`
FROM (
  SELECT
    yearID,
    teamID,
    park,
    attendance / G AS `Winning Average Attendance`
  FROM teams
  WHERE WSWin = 'Y' AND
  G IS NOT NULL AND
  attendance IS NOT NULL
) AS `WhenWon` NATURAL JOIN (
    SELECT
      teamID,
      park,
      SUM(attendance) / SUM(G) AS `Non-Winning Average Attendance`
    FROM (
      SELECT
        yearID,
        teamID,
        park,
        attendance,
        G
      FROM teams
      WHERE WSWin != 'Y' AND
            G IS NOT NULL AND
            attendance IS NOT NULL
    ) AS `NonWinners`
    GROUP BY teamID, park
) AS `WhenLost`
ORDER BY yearID