{"id":1454,"date":"2013-03-26T20:54:00","date_gmt":"2013-03-26T20:54:00","guid":{"rendered":"https:\/\/www.pauloacosta.com\/index.php\/2013\/03\/26\/como-obter-registros-aleatorios-no-mysql\/"},"modified":"2013-03-26T20:54:00","modified_gmt":"2013-03-26T20:54:00","slug":"como-obter-registros-aleatorios-no-mysql","status":"publish","type":"post","link":"https:\/\/www.pauloacosta.com\/2013\/03\/como-obter-registros-aleatorios-no-mysql.html","title":{"rendered":"Como obter registros aleat\u00f3rios no MySQL"},"content":{"rendered":"<p>Conseguir obter um registro aleat\u00f3rio pode at\u00e9 n\u00e3o ser um dos recursos mais importantes de um banco de dados, mas n\u00e3o deixa de ser muito \u00fatil, principalmente se voc\u00ea precisa:<\/p>\n<ul>\n<li>Exibir itens sem mostrar favoritismo;<\/li>\n<li>Testar o c\u00f3digo retornando valores diferentes;<\/li>\n<li>Exibir itens de forma n\u00e3o-espec\u00edfica;<\/li>\n<\/ul>\n<p>Por\u00e9m, apesar da grande utilidade, este \u00e9 um recurso muito f\u00e1cil de ser utilizado. Para isso basta utilizar o comando Rand() na cl\u00e1usula ORDER BY:<\/p>\n<p>  [code language=&#8221;php&#8221;] SELECT artigo_id, titulo, descricao FROM artigo ORDER BY RAND() LIMIT 4 [\/code]  <\/p>\n<p>O c\u00f3digo acima retornar\u00e1 a informa\u00e7\u00e3o artigo_id, titulo, descricao (SELECT artigo_id, titulo, descricao) de quatro artigos (LIMIT 4) que est\u00e3o contidos na tabela artigo (FROM artigo) selecionados de forma aleat\u00f3ria (ORDER BY RAND())<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Conseguir obter um registro aleat\u00f3rio pode at\u00e9 n\u00e3o ser um dos recursos mais importantes de um banco de dados, mas n\u00e3o deixa de ser muito \u00fatil, principalmente se voc\u00ea precisa: Exibir itens sem mostrar favoritismo; Testar o c\u00f3digo retornando valores diferentes; Exibir itens de forma n\u00e3o-espec\u00edfica; Por\u00e9m, apesar da grande utilidade, este \u00e9 um recurso [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[399,680],"tags":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.pauloacosta.com\/wp-json\/wp\/v2\/posts\/1454"}],"collection":[{"href":"https:\/\/www.pauloacosta.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pauloacosta.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pauloacosta.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pauloacosta.com\/wp-json\/wp\/v2\/comments?post=1454"}],"version-history":[{"count":0,"href":"https:\/\/www.pauloacosta.com\/wp-json\/wp\/v2\/posts\/1454\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.pauloacosta.com\/wp-json\/wp\/v2\/media?parent=1454"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pauloacosta.com\/wp-json\/wp\/v2\/categories?post=1454"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pauloacosta.com\/wp-json\/wp\/v2\/tags?post=1454"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}