{"id":1122,"date":"2024-07-31T11:19:35","date_gmt":"2024-07-31T09:19:35","guid":{"rendered":"https:\/\/blog.sutilweb.eu\/?page_id=1122"},"modified":"2024-07-31T11:19:35","modified_gmt":"2024-07-31T09:19:35","slug":"19-columnas-calculadas-y-funciones-de-agrupamiento","status":"publish","type":"page","link":"https:\/\/sutilweb.eu\/index.php\/databases\/sql\/19-columnas-calculadas-y-funciones-de-agrupamiento\/","title":{"rendered":"19. Columnas calculadas y funciones de agrupamiento"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Veamos algunos ejms de <strong>operaciones matem\u00e1ticas<\/strong> que podemos hacer con el lenguaje <strong>SQL.<\/strong><\/p>\n\n\n\n<!--more-->\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ejm<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"># Columnas calculadas\n-- Multiplicar\u00e1 precio por cantidad en un ALIAS denominado productos\nSELECT nombre, precio, cantidad, (precio * cantidad) AS ganancia FROM productos;\n\n# Funciones de agrupamiento\n-- M\u00e1ximo precio de la tabla productos\nSELECT MAX(precio) FROM productos;\n-- M\u00ednimo precio de la tabla productos\nSELECT MIN(precio) FROM productos;\n-- Suma de las cantidades de los productos\nSELECT SUM(cantidad) AS existencias FROM productos;\n-- Promedio de los precios de los productos\nSELECT AVG(precio) AS promedio FROM productos;\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Veamos algunos ejms de operaciones matem\u00e1ticas que podemos hacer con el lenguaje SQL.<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1076,"menu_order":18,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","footnotes":""},"class_list":["post-1122","page","type-page","status-publish","hentry"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false},"uagb_author_info":{"display_name":"Sutil Web","author_link":"https:\/\/sutilweb.eu\/index.php\/author\/sutilweb\/"},"uagb_comment_info":0,"uagb_excerpt":"Veamos algunos ejms de operaciones matem\u00e1ticas que podemos hacer con el lenguaje SQL.","_links":{"self":[{"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages\/1122","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/comments?post=1122"}],"version-history":[{"count":1,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages\/1122\/revisions"}],"predecessor-version":[{"id":1123,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages\/1122\/revisions\/1123"}],"up":[{"embeddable":true,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages\/1076"}],"wp:attachment":[{"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/media?parent=1122"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}