Retourne les noms, prénoms, rôle et équipe de tous les joueurs, classés dans l’ordre alphabétique par équipe,
puis par rôle dans l’équipe,
puis par nom de famille,
puis par prénom.

SELECT DISTINCT wizard.firstname, wizard.lastname, player.role, team.name
FROM player
INNER JOIN wizard
ON wizard.id = player.wizard_id INNER
JOIN team ON team.id = player.team_id
ORDER BY team.name ASC, player.role ASC, wizard.lastname ASC, wizard.firstname ASC;


+-------------+-----------------+--------+------------+
| firstname   | lastname        | role   | name       |
+-------------+-----------------+--------+------------+
| Sirius      | Black           | beater | Gryffindor |
| Lavender    | Brown           | beater | Gryffindor |
| Seamus      | Finnigan        | beater | Gryffindor |
| Rubeus      | Hagrid          | beater | Gryffindor |
| Alice       | Longbottom      | beater | Gryffindor |
| Minerva     | McGonagall      | beater | Gryffindor |
| Harry       | Potter          | beater | Gryffindor |
| James       | Potter          | beater | Gryffindor |
| Dean        | Thomas          | beater | Gryffindor |
| Arthur      | Weasley         | beater | Gryffindor |
| Percy       | Weasley         | beater | Gryffindor |
| Katie       | Bell            | chaser | Gryffindor |
| Albus       | Dumbledore      | chaser | Gryffindor |
| Hermione    | Granger         | chaser | Gryffindor |
| Lily        | J.              | chaser | Gryffindor |
| Lee         | Jordan          | chaser | Gryffindor |
| Augusta     | Longbottom      | chaser | Gryffindor |
| Frank       | Longbottom      | chaser | Gryffindor |
| Neville     | Longbottom      | chaser | Gryffindor |
| Peter       | Pettigrew       | chaser | Gryffindor |
| Alicia      | Spinnet         | chaser | Gryffindor |
| George      | Weasley         | chaser | Gryffindor |
| Oliver      | Wood            | chaser | Gryffindor |
| Cadogan     |                 | keeper | Gryffindor |
| Dennis      | Creevey         | keeper | Gryffindor |
| Nicholas    | de              | keeper | Gryffindor |
| Aberforth   | Dumbledore      | keeper | Gryffindor |
| Angelina    | Johnson         | keeper | Gryffindor |
| Ginevra     | Weasley         | keeper | Gryffindor |
| Cuthbert    | Binns           | seeker | Gryffindor |
| Colin       | Creevey         | seeker | Gryffindor |
| Godric      | Gryffindor      | seeker | Gryffindor |
| Romilda     | Vane            | seeker | Gryffindor |
| Fred        | Weasley         | seeker | Gryffindor |
| Ronald      | Weasley         | seeker | Gryffindor |
| William     | Weasley         | seeker | Gryffindor |
| Hannah      | Abbott          | beater | Hufflepuff |
| Justin      | Finch-Fletchley | beater | Hufflepuff |
| Fat         | Friar           | beater | Hufflepuff |
| Hepzibah    | Smith           | beater | Hufflepuff |
| Pomona      | Sprout          | beater | Hufflepuff |
| Nymphadora  | Tonks           | beater | Hufflepuff |
| Amelia      | Bones           | chaser | Hufflepuff |
| Newton      | Scamander       | chaser | Hufflepuff |
| Susan       | Bones           | keeper | Hufflepuff |
| Cedric      | Diggory         | keeper | Hufflepuff |
| Zacharias   | Smith           | keeper | Hufflepuff |
| Helga       | Hufflepuff      | seeker | Hufflepuff |
| Penelope    | Clearwater      | beater | Ravenclaw  |
| Quirinus    | Quirrell        | beater | Ravenclaw  |
| Helena      | Ravenclaw       | beater | Ravenclaw  |
| Myrtle      | Warren          | beater | Ravenclaw  |
| Cho         | Chang           | chaser | Ravenclaw  |
| Marietta    | Edgecombe       | chaser | Ravenclaw  |
| Filius      | Flitwick        | chaser | Ravenclaw  |
| Anthony     | Goldstein       | chaser | Ravenclaw  |
| Gilderoy    | Lockhart        | chaser | Ravenclaw  |
| Luna        | Lovegood        | chaser | Ravenclaw  |
| Xenophilius | Lovegood        | chaser | Ravenclaw  |
| Garrick     | Ollivander      | chaser | Ravenclaw  |
| Michael     | Corner          | seeker | Ravenclaw  |
| Rowena      | Ravenclaw       | seeker | Ravenclaw  |
| Sybill      | Trelawney       | seeker | Ravenclaw  |
| Millicent   | Bulstrode       | beater | Slytherin  |
| Vincent     | Crabbe          | beater | Slytherin  |
| Marcus      | Flint           | beater | Slytherin  |
| Pansy       | Parkinson       | beater | Slytherin  |
| Severus     | Snape           | beater | Slytherin  |
| Blaise      | Zabini          | beater | Slytherin  |
| Bloody      | Baron           | chaser | Slytherin  |
| Bellatrix   | Lestrange       | chaser | Slytherin  |
| Rodolphus   | Lestrange       | chaser | Slytherin  |
| Draco       | Malfoy          | chaser | Slytherin  |
| Lucius      | Malfoy          | chaser | Slytherin  |
| Phineas     | Nigellus        | chaser | Slytherin  |
| Theodore    | Nott            | chaser | Slytherin  |
| Tom         | Riddle          | chaser | Slytherin  |
| Andromeda   | Tonks           | chaser | Slytherin  |
| Regulus     | Black           | keeper | Slytherin  |
| Gregory     | Goyle           | seeker | Slytherin  |
| Rabastan    | Lestrange       | seeker | Slytherin  |
| Narcissa    | Malfoy          | seeker | Slytherin  |
| Salazar     | Slytherin       | seeker | Slytherin  |
| Dolores     | Umbridge        | seeker | Slytherin  |
+-------------+-----------------+--------+------------+

Retourne uniquement les prénom et nom des joueurs ayant le rôle de seeker (attrapeur)
classés par ordre alphabétique de nom
puis prénom.

SELECT DISTINCT wizard.firstname, wizard.lastname, player.role
FROM player
INNER JOIN wizard ON wizard.id = player.wizard_id
WHERE player.role = 'seeker'
ORDER BY wizard.lastname ASC, wizard.firstname ASC;

+-----------+------------+--------+
| firstname | lastname   | role   |
+-----------+------------+--------+
| Cuthbert  | Binns      | seeker |
| Michael   | Corner     | seeker |
| Colin     | Creevey    | seeker |
| Gregory   | Goyle      | seeker |
| Godric    | Gryffindor | seeker |
| Helga     | Hufflepuff | seeker |
| Rabastan  | Lestrange  | seeker |
| Narcissa  | Malfoy     | seeker |
| Rowena    | Ravenclaw  | seeker |
| Salazar   | Slytherin  | seeker |
| Sybill    | Trelawney  | seeker |
| Dolores   | Umbridge   | seeker |
| Romilda   | Vane       | seeker |
| Fred      | Weasley    | seeker |
| Ronald    | Weasley    | seeker |
| William   | Weasley    | seeker |
+-----------+------------+--------+

Retourne la liste de tous les sorciers qui ne pratiquent pas le quidditch.

SELECT firstname,lastname
FROM wizard LEFT OUTER
JOIN player ON player.wizard_id = wizard.id
WHERE player.id is null;

+-----------+----------+
| firstname | lastname |
+-----------+----------+
| Terry     | Boot     |
| Crabbe    |          |
| Remus     | Lupin    |
| Padma     | Patil    |
| Parvati   | Patil    |
| Demelza   | Robins   |
| Horace    | Slughorn |
| Charles   | Weasley  |
| Molly     | Weasley  |
+-----------+----------+