adding joins exercises

Author: ThiagoMowszet

join.sql

@@ -0,0 +1,77 @@
+SELECT matchid, player FROM goal 
+  WHERE teamid = 'GER'
+
+
+SELECT id,stadium,team1,team2
+  FROM game
+where id = 1012
+
+
+
+SELECT player, teamid, stadium, mdate
+  FROM game JOIN goal ON (id=matchid)
+where teamid = 'GER'
+
+
+SELECT team1, team2, player
+  FROM game JOIN goal ON (id=matchid)
+where player like 'Mario%'
+
+
+
+SELECT player, teamid, coach, gtime
+  FROM goal JOIN eteam ON (teamid=id)
+ WHERE gtime<=10
+
+
+select mdate, teamname
+from game JOIN eteam ON (team1=eteam.id)
+where coach = 'Fernando Santos'
+
+
+select player
+from goal JOIN game on (matchid = id)
+where stadium = 'National Stadium, Warsaw'
+
+
+
+SELECT DISTINCT player
+  FROM game JOIN goal ON matchid = id 
+    WHERE (team1 = 'GER' or team2 = 'GER')
+    AND teamid != 'GER'
+
+
+SELECT teamname, COUNT(*) as goals_scored
+  FROM eteam JOIN goal ON id=teamid
+ GROUP BY teamname
+
+
+
+SELECT stadium, COUNT(*)as goals FROM goal
+  JOIN game ON (matchid = id)
+  GROUP BY stadium
+
+
+SELECT matchid, mdate, COUNT(*)
+  FROM game JOIN goal ON matchid = id
+  WHERE (team1 = 'POL' OR team2 = 'POL')
+  GROUP BY mdate,matchid
+order by matchid asc -- PR
+
+
+
+SELECT matchid, mdate, COUNT(*) FROM goal
+  JOIN game ON (matchid=id)
+  WHERE teamid = 'GER'
+  GROUP BY matchid, mdate
+
+
+
+SELECT DISTINCT mdate, team1,
+	SUM(CASE WHEN teamid=team1 THEN 1 ELSE 0 END) score1,
+    team2,
+    SUM(CASE WHEN teamid=team2 THEN 1 ELSE 0 END) score2
+FROM game
+LEFT JOIN goal ON game.id = goal.matchid
+GROUP BY id, mdate, team1, team2
+ORDER BY mdate, matchid, team1, team2