ConnorFM · April 8, 2019 10:50 · Apr 8, 2019
diff --git a/sql advanced b/sql advanced
@@ -0,0 +1,39 @@
+mysql> select name, count(player.id) as members_numbers from team join player on player.team_id=team.id group by team.id order by members_numbers desc;
++------------+-----------------+
+| name       | members_numbers |
++------------+-----------------+
+| Gryffindor |              36 |
+| Slytherin  |              21 |
+| Ravenclaw  |              15 |
+| Hufflepuff |              12 |
++------------+-----------------+
+4 rows in set (0.00 sec)
+
+
+mysql> select name, count(player.id) as members_numbers from team join player on player.team_id=team.id group by team.id having members_numbers > 14 order by name desc;
++------------+-----------------+
+| name       | members_numbers |
++------------+-----------------+
+| Slytherin  |              21 |
+| Ravenclaw  |              15 |
+| Gryffindor |              36 |
++------------+-----------------+
+3 rows in set (0.01 sec)
+
+mysql> select concat(lastname, ' ', firstname) as fullname, enrollment_date from player join team on player.team_id=team.id join wizard on wizard.id=player.wizard_id where name="Gryffindor" and weekday(player.enrollm
++----------------------+-----------------+
+| fullname             | enrollment_date |
++----------------------+-----------------+
+| Weasley George       | 1991-08-26      |
+| Longbottom Alice     | 1992-02-17      |
+|  Cadogan             | 1993-01-04      |
+| Gryffindor Godric    | 1993-08-30      |
+| Black Sirius         | 1994-01-10      |
+| Dumbledore Aberforth | 1995-04-24      |
+| Longbottom Augusta   | 1999-10-25      |
++----------------------+-----------------+
+7 rows in set (0.00 sec)
+
+
+
+