Created
February 11, 2014 08:41
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SQL: Insert, Update, Delete, Create table, drop. (Insertar, actualizar, borrar, crear tabla, borrar)
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<?php | |
/* Insertar */ | |
INSERT INTO usuarios VALUES ('', 'Lisa'); | |
INSERT INTO usuarios (nombre, id) VALUES | |
('Flanders', NULL); | |
/* Consulta */ | |
SELECT * FROM usuarios; | |
SELECT nombre FROM usuarios; | |
SELECT id, nombre FROM usuarios; | |
/* Actualizar */ | |
UPDATE usuarios SET nombre = 'Burns' WHERE id = '1'; | |
/* Borrar */ | |
DELETE FROM usuarios WHERE id = '1'; | |
/* Formato de fechas */ | |
'2013-09-23' | |
//Ejemplo | |
INSERT INTO libreria (id, fecha) VALUES (NULL, '1886-02-11'); | |
/* Formato de boolean */ | |
+------+-------+ | |
| TRUE | FALSE | | |
+------+-------+ | |
| 1 | 0 | | |
+------+-------+ | |
//Ejemplo | |
INSERT INTO libreria(id, nombre, digital) VALUES (NULL, 'Don quijote', TRUE); | |
INSERT INTO libreria(id, nombre, digital) VALUES (NULL, '20 poemas de amor y una cancion desesperada', 0); | |
/* Crear tabla */ | |
CREATE TABLE libreria ( | |
id INTEGER NOT NULL AUTO_INCREMENT PRIMARY KEY, | |
titulo VARCHAR(100), | |
autor VARCHAR(30), | |
fecha DATE, | |
porcentajeVentas FLOAT, | |
digital BOOLEAN, | |
capituloEjemplo TEXT | |
); | |
Tipos de valores: INTEGER (números enteros), VARCHAR(cadena de texto), | |
TEXT(Textos largos), DATE (fechas), FLOAT(decimales), | |
BOOLEAN(true o false) | |
/* Borrar tabla */ | |
DROP TABLE libreria; | |
?> |
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