5 queries done

SQL stuff/queries.sql

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+-- aggregate functions and nested subqueries (print player with highest wage)
+SELECT id, skill, reputation, wages
+FROM Player
+WHERE wages = (select max(wages) from Player)
+
+-- logic operators (print Club with highest training ground quality and budget below 1000)
+SELECT id, reputation, country_of_origin, training_ground_quality, budget
+FROM Club
+WHERE (training_ground_quality = 5 AND budget < 1000)
+
+-- group by (print highest prize for a competitions taking part in each country)
+SELECT max(prize), country
+FROM Competition
+GROUP BY country
+
+--  having clause (print how many stadiums were build in each year)
+SELECT COUNT(id), build_year
+FROM Stadium
+GROUP BY build_year
+HAVING count(id) < 1000
+
+-- correlated, nested subqueries (
+
+-- join (print how much manager earns in each club)
+SELECT Club.id AS Club_id, Manager.id AS Manager_id, Club.reputation AS Club_reputation, Manager.wage AS Manager_wage
+FROM Club
+INNER JOIN Manager ON Club.Manager_id = Manager.id