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September 7, 2020 07:48
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02 - Récupérer des informations avec SELECT
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Récupère tous les champs pour les sorciers nés entre 1975 et 1985 | |
mysql> SELECT * FROM wizard WHERE birthday BETWEEN '1975-01-01' AND '1985-12-31'; | |
+----+-----------+----------+------------+-------------+---------------------------------------+-----------+ | |
| id | firstname | lastname | birthday | birth_place | biography | is_muggle | | |
+----+-----------+----------+------------+-------------+---------------------------------------+-----------+ | |
| 1 | harry | potter | 1980-07-31 | london | | 0 | | |
| 2 | hermione | granger | 1979-09-19 | | Friend of Harry Potter | 0 | | |
| 4 | ron | weasley | 1980-03-01 | | Best friend of Harry | 0 | | |
| 5 | ginny | weasley | 1981-08-11 | | Sister of Ron and girlfriend of Harry | 0 | | |
| 6 | fred | weasley | 1978-04-01 | | | 0 | | |
| 7 | george | weasley | 1978-04-01 | | | 0 | | |
| 10 | drago | malefoy | 1980-06-05 | | | 0 | | |
| 14 | dudley | dursley | 1980-06-23 | | Cousin d'Harry | 1 | | |
+----+-----------+----------+------------+-------------+---------------------------------------+-----------+ | |
8 rows in set (0.00 sec) | |
Récupère le prénom uniquement des sorciers dont le prénom commence par la lettre ‘H’ | |
mysql> SELECT firstname FROM wizard WHERE firstname LIKE 'H%'; | |
+-----------+ | |
| firstname | | |
+-----------+ | |
| harry | | |
| hermione | | |
+-----------+ | |
2 rows in set (0.00 sec) | |
Récupère les prénoms et noms de tous les membres de la famille ‘Potter’, classés par ordre de prénom | |
mysql> SELECT firstname, lastname FROM wizard WHERE lastname='Potter' ORDER BY firstname ASC; | |
+-----------+----------+ | |
| firstname | lastname | | |
+-----------+----------+ | |
| harry | potter | | |
| lily | potter | | |
+-----------+----------+ | |
2 rows in set (0.00 sec) | |
Récupère le prénom, nom et date de naissance du plus vieux sorcier (doit fonctionner quelque soit le contenu de la table) | |
mysql> SELECT firstname, lastname, birthday FROM wizard WHERE is_muggle=0 AND birthday = (SELECT MIN(birthday) from wizard); | |
+-----------+------------+------------+ | |
| firstname | lastname | birthday | | |
+-----------+------------+------------+ | |
| albus | dumbledore | 1881-07-01 | | |
+-----------+------------+------------+ | |
1 row in set (0.00 sec) |
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