{"id":7901,"date":"2025-04-22T17:38:05","date_gmt":"2025-04-22T15:38:05","guid":{"rendered":"https:\/\/www.datasystem.es\/nuevo\/?p=7901"},"modified":"2025-04-22T17:43:43","modified_gmt":"2025-04-22T15:43:43","slug":"mysql-para-principiantes","status":"publish","type":"post","link":"https:\/\/www.datasystem.es\/nuevo\/mysql-para-principiantes\/","title":{"rendered":"MYSQL para principiantes"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">MySQL es un sistema de gesti\u00f3n de bases de datos relacional de c\u00f3digo abierto, usado para almacenar y gestionar informaci\u00f3n eficazmente.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"439\" data-src=\"https:\/\/www.datasystem.es\/nuevo\/wp-content\/smush-webp\/2025\/04\/image-19-1024x439.png.webp\" alt=\"\" class=\"wp-image-7902 lazyload\" data-srcset=\"https:\/\/www.datasystem.es\/nuevo\/wp-content\/smush-webp\/2025\/04\/image-19-1024x439.png.webp 1024w, https:\/\/www.datasystem.es\/nuevo\/wp-content\/smush-webp\/2025\/04\/image-19-300x129.png.webp 300w, https:\/\/www.datasystem.es\/nuevo\/wp-content\/smush-webp\/2025\/04\/image-19-768x329.png.webp 768w, https:\/\/www.datasystem.es\/nuevo\/wp-content\/smush-webp\/2025\/04\/image-19-18x8.png.webp 18w, https:\/\/www.datasystem.es\/nuevo\/wp-content\/smush-webp\/2025\/04\/image-19.png.webp 1120w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/439;\" \/><\/figure>\n\n\n\n<h2 style=\"font-family: 'Arial Black'; font-size: 30px;\">1.CREAR UNA BASE DE DATOS<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Para este tutorial, vamos a utilizar XAMPP, aunque es valida cualquier otro gestor de BBDD.<\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" width=\"668\" height=\"434\" data-src=\"https:\/\/www.datasystem.es\/nuevo\/wp-content\/smush-webp\/2025\/04\/XAMPP_Windows_10-1.png.webp\" alt=\"\" class=\"wp-image-7904 size-full lazyload\" data-srcset=\"https:\/\/www.datasystem.es\/nuevo\/wp-content\/smush-webp\/2025\/04\/XAMPP_Windows_10-1.png.webp 668w, https:\/\/www.datasystem.es\/nuevo\/wp-content\/smush-webp\/2025\/04\/XAMPP_Windows_10-1-300x195.png.webp 300w, https:\/\/www.datasystem.es\/nuevo\/wp-content\/smush-webp\/2025\/04\/XAMPP_Windows_10-1-18x12.png.webp 18w\" data-sizes=\"(max-width: 668px) 100vw, 668px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 668px; --smush-placeholder-aspect-ratio: 668\/434;\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\">Para acceder a la terminal, activamos los servicios de Mysql y apache del XAMP, as\u00ed accederemos a la terminal, donde debemos ejecutar mysql -u root<\/p>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Para crear una base de datos y ver las ya existentes debemos seguir los siguientes pasos:<\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" width=\"665\" height=\"512\" data-src=\"https:\/\/www.datasystem.es\/nuevo\/wp-content\/smush-webp\/2025\/04\/1661681434724.png.webp\" alt=\"\" class=\"wp-image-7905 size-full lazyload\" data-srcset=\"https:\/\/www.datasystem.es\/nuevo\/wp-content\/smush-webp\/2025\/04\/1661681434724.png.webp 665w, https:\/\/www.datasystem.es\/nuevo\/wp-content\/smush-webp\/2025\/04\/1661681434724-300x231.png.webp 300w, https:\/\/www.datasystem.es\/nuevo\/wp-content\/smush-webp\/2025\/04\/1661681434724-16x12.png.webp 16w\" data-sizes=\"(max-width: 665px) 100vw, 665px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 665px; --smush-placeholder-aspect-ratio: 665\/512;\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\">create database nombre_bbdd;<br>show databases;<\/p>\n<\/div><\/div>\n\n\n\n<h2 style=\"font-family: 'Arial Black'; font-size: 30px;\">2. CREAR TABLAS<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Para crear tablas en mysql seguiremos la siguiente estrucutra base:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE estudiantes (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    nombre VARCHAR(50) NOT NULL,\n    edad INT,\n    email VARCHAR(100) UNIQUE\n);<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Parametros s tnener en cuenta:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Tipo de valor recogido: en caso de ser un numero entero usamos <strong>int<\/strong>, en caso de valores alfanum\u00e9ricos usamos <strong>varchar<\/strong>&#8230;<\/li>\n\n\n\n<li><strong>not null <\/strong>proh\u00edbe un campo vacio<\/li>\n\n\n\n<li><strong>unique <\/strong>restringe la repetici\u00f3n de datos, muy \u00fatil para evitar redundancia.<\/li>\n\n\n\n<li><strong>primary key<\/strong> es aquel dato de la tabla que mas identifica a cada estudiante en este caso, tampoco se puede repetir y nos permite enlazar con otras tablas.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"640\" height=\"309\" data-src=\"https:\/\/www.datasystem.es\/nuevo\/wp-content\/uploads\/2025\/04\/6bd4a-how2bto2bcreate2btable2bin2bmysql2busing2bcmd_3-1.webp\" alt=\"\" class=\"wp-image-7907 lazyload\" data-srcset=\"https:\/\/www.datasystem.es\/nuevo\/wp-content\/uploads\/2025\/04\/6bd4a-how2bto2bcreate2btable2bin2bmysql2busing2bcmd_3-1.webp 640w, https:\/\/www.datasystem.es\/nuevo\/wp-content\/uploads\/2025\/04\/6bd4a-how2bto2bcreate2btable2bin2bmysql2busing2bcmd_3-1-300x145.webp 300w, https:\/\/www.datasystem.es\/nuevo\/wp-content\/uploads\/2025\/04\/6bd4a-how2bto2bcreate2btable2bin2bmysql2busing2bcmd_3-1-18x9.webp 18w\" data-sizes=\"(max-width: 640px) 100vw, 640px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 640px; --smush-placeholder-aspect-ratio: 640\/309;\" \/><\/figure>\n<\/div>\n\n\n<h2 style=\"font-family: 'Arial Black'; font-size: 30px;\">3. INSERTAR DATOS<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>INSERT INTO estudiantes (nombre, edad, email)  VALUES  \n    ('Carlos', 25, 'carlos@email.com'),  \n    ('Mar\u00eda', 21, 'maria@email.com'),  \n    ('Jos\u00e9', 23, 'jose@email.com');<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-src=\"https:\/\/www.datasystem.es\/nuevo\/wp-content\/uploads\/2025\/04\/image-21-1024x576.png\" alt=\"\" class=\"wp-image-7909 lazyload\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/576;\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">En el caso de insertar valores debemos tener en cuenta varios aspectos.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Para a\u00f1adir valores seguimos la siguiente estructura: insert into nombre_tabla values (&#8230;);<\/li>\n\n\n\n<li>No podemos a\u00f1adir valores a una columna auto incrementable como el id.<\/li>\n\n\n\n<li>Los valores con varchar van entre comillas.<\/li>\n<\/ul>\n\n\n\n<h2 style=\"font-family: 'Arial Black'; font-size: 30px;\">4. MODIFICAR DATOS<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>UPDATE estudiantes  \nSET edad = 23, email = 'lucia.nueva@email.com'  \nWHERE nombre = 'Luc\u00eda';<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Al igual que al insertar datos, para actualizarlos tambi\u00e9n debemos seguir la siguiente estructura: update nombre_tabla set parametro_a_cambiar = nuevo_datos where=donde_lo_cambiamos<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" data-src=\"https:\/\/www.datasystem.es\/nuevo\/wp-content\/uploads\/2025\/04\/image-20.png\" alt=\"\" class=\"wp-image-7908 lazyload\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/figure>\n\n\n\n<h2 style=\"font-family: 'Arial Black'; font-size: 30px;\">5. ELIMINAR DATOS<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>DELETE FROM estudiantes  \nWHERE nombre = 'Luc\u00eda';<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">As\u00ed ser\u00eda en el caso de borrar datos espec\u00edficos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En el caso de borrar  la tabla entera \u00fanicamente ejecutamos <strong>drop table;<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>MySQL es un sistema de gesti\u00f3n de bases de datos relacional de c\u00f3digo abierto, usado para almacenar y gestionar informaci\u00f3n eficazmente. 1.CREAR UNA BASE DE DATOS Para este tutorial, vamos a utilizar XAMPP, aunque es valida cualquier otro gestor de BBDD. Para acceder a la terminal, activamos los servicios de Mysql y apache del XAMP, [&hellip;]<\/p>\n","protected":false},"author":25,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-7901","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.8 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>MYSQL para principiantes - SPInformatica<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.datasystem.es\/nuevo\/mysql-para-principiantes\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"MYSQL para principiantes\" \/>\n<meta property=\"og:description\" content=\"MySQL es un sistema de gesti\u00f3n de bases de datos relacional de c\u00f3digo abierto, usado para almacenar y gestionar informaci\u00f3n eficazmente. 1.CREAR UNA BASE DE DATOS Para este tutorial, vamos a utilizar XAMPP, aunque es valida cualquier otro gestor de BBDD. 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