{"id":3875,"date":"2025-01-29T19:36:55","date_gmt":"2025-01-29T19:36:55","guid":{"rendered":"https:\/\/www.fpw.com.br\/?p=3875"},"modified":"2025-01-29T19:53:27","modified_gmt":"2025-01-29T19:53:27","slug":"sql-consultas-comando-select","status":"publish","type":"post","link":"https:\/\/fpw.com.br\/m\/sql-consultas-comando-select\/","title":{"rendered":"SQL | Consultas &#8211; Comando SELECT"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"3875\" class=\"elementor elementor-3875\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-76c1340 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"76c1340\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-40b0655 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"40b0655\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-3c6add9 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"3c6add9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a7f66c1 elementor-widget elementor-widget-heading\" data-id=\"a7f66c1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Consultas - Comando SELECT<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b6fbbe7 elementor-widget elementor-widget-text-editor\" data-id=\"b6fbbe7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h6>Est\u00e1 p\u00e1gina cont\u00e9m links patrocinados!<\/h6><h2>Introdu\u00e7\u00e3o ao Comando SELECT<\/h2><p>O comando\u00a0<strong>SELECT<\/strong>\u00a0\u00e9 uma das instru\u00e7\u00f5es mais fundamentais da linguagem SQL. Ele \u00e9 utilizado para consultar dados em um banco de dados relacional, permitindo que o usu\u00e1rio recupere informa\u00e7\u00f5es espec\u00edficas de uma ou mais tabelas. Neste artigo, vamos examinar os conceitos essenciais e as melhores pr\u00e1ticas para utilizar este comando de forma eficaz.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-621913e elementor-widget elementor-widget-text-editor\" data-id=\"621913e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>A\u00a0<strong>linguagem SQL<\/strong>\u00a0\u00e9 a mais utilizada quando o assunto \u00e9 manipula\u00e7\u00e3o de banco de dados, e nesse artigo vamos aprender a trabalhar com essa linguagem e ver alguns exemplos.<\/p><h3>Comando SELECT<\/h3><p>O comando select \u00e9 o \u201ccomando base\u201d para todos os comandos de pesquisa de informa\u00e7\u00f5es no banco de dados.<\/p><p>No comando abaixo, selecionamos todas as colunas<\/p><div class=\"code-area\"><div class=\"pre_sql\"><div><pre class=\"line-numbers pre_sql\"><code class=\"pre_sql\"><span class=\"token keyword\">select<\/span> <span class=\"token operator\">*<\/span> <span class=\"token keyword\">from<\/span> Produtos<span class=\"token punctuation\">;<\/span><\/code><\/pre><\/div><\/div><div class=\"code-caption\">Explica\u00e7\u00e3o no v\u00eddeo<\/div><div>\u00a0<\/div><\/div><div class=\"code-area\"><div class=\"pre_sql\"><div><pre class=\"line-numbers pre_sql\"><code class=\"pre_sql\"><span class=\"token keyword\">select<\/span> id, valor from Produtos;<\/code><\/pre><\/div><\/div><div class=\"code-caption\">Nesta consulta, selecionamos colunas espec\u00edficas<\/div><div>\u00a0<\/div><div>Seleciona os campos id e valor de todos os registros da tabela Produtos.<\/div><\/div><h3>Usando operadores aritm\u00e9ticos (usando ou n\u00e3o par\u00eanteses)<\/h3><p>Agora selecione os campos Produto, qte, valor, qte*valor, colhendo informa\u00e7\u00f5es de todos os registros da tabela Produtos e fazendo um c\u00e1lculo na pr\u00f3pria Consulta<\/p><ul><li>Regras de preced\u00eancia: multiplica\u00e7\u00e3o(*), divis\u00e3o(\/), adi\u00e7\u00e3o(+), subtra\u00e7\u00e3o(-).<\/li><li>Multiplica\u00e7\u00e3o e divis\u00e3o t\u00eam prioridade sobre adi\u00e7\u00e3o e subtra\u00e7\u00e3o.<\/li><li>Operadores de mesma prioridade s\u00e3o executados da esquerda para a direita.<\/li><li>Par\u00eanteses podem ser usados para for\u00e7ar a prioridade dos c\u00e1lculos e tornar o entendimento das f\u00f3rmulas mais claro.<\/li><\/ul><div class=\"code-area\"><div class=\"pre_sql\"><div><pre class=\"line-numbers pre_sql\"><code class=\"pre_sql\"><span class=\"token keyword\">select<\/span> produto, qte, valor, qte*valor <span class=\"token keyword\">from<\/span> Produtos<span class=\"token punctuation\">;<\/span><\/code><\/pre><\/div><\/div><div class=\"code-caption\"><b>Neste caso estamos utilizando o operador de multiplica\u00e7\u00e3o *<\/b><\/div><\/div><div>Importante: Os campos para serem calculados, devem ter seu conte\u00fado num\u00e9rico, se o conte\u00fado for texto, vai gerar uma erro na execu\u00e7\u00e3o da consulta.<\/div><div>\u00a0<\/div><div>Assista o v\u00eddeo abaixo para aprender na pr\u00e1tica.<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-345f586 elementor-widget elementor-widget-video\" data-id=\"345f586\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/www.youtube.com\\\/watch?v=RGEGDPiJml4&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-be147cd elementor-widget elementor-widget-text-editor\" data-id=\"be147cd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Estrutura B\u00e1sica do Comando SELECT<\/h2><p>A estrutura b\u00e1sica de um comando\u00a0<strong>SELECT<\/strong>\u00a0\u00e9 bastante simples. Voc\u00ea inicia com a palavra-chave\u00a0<strong>SELECT<\/strong>, seguida das colunas que deseja recuperar, e a cl\u00e1usula\u00a0<strong>FROM<\/strong>\u00a0para especificar a tabela de onde os dados ser\u00e3o extra\u00eddos. Por exemplo:\u00a0<em>SELECT coluna1, coluna2 FROM tabela;<\/em>. Esta consulta retornar\u00e1 os dados das colunas indicadas na tabela especificada.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1c0c2b4 elementor-widget elementor-widget-text-editor\" data-id=\"1c0c2b4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Filtros e Condi\u00e7\u00f5es: WHERE e Outros<\/h2><p>Um dos recursos mais poderosos do comando\u00a0<strong>SELECT<\/strong>\u00a0\u00e9 a possibilidade de filtrar resultados usando a cl\u00e1usula\u00a0<strong>WHERE<\/strong>. Isso permite que voc\u00ea retorne apenas os registros que atendem a determinadas condi\u00e7\u00f5es. Al\u00e9m disso, voc\u00ea pode utilizar outras cl\u00e1usulas, como\u00a0<strong>ORDER BY<\/strong>\u00a0para ordenar resultados e\u00a0<strong>GROUP BY<\/strong>\u00a0para agregar dados. Por exemplo,\u00a0<em>SELECT coluna1 FROM tabela WHERE condi\u00e7\u00e3o ORDER BY coluna1;<\/em>\u00a0retornaria uma lista de valores filtrados e ordenados.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2b4987b elementor-widget elementor-widget-image\" data-id=\"2b4987b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/fpw.com.br\/m\/wp-content\/uploads\/2025\/01\/sql-select-1024x576.jpg\" class=\"attachment-large size-large wp-image-3876\" alt=\"Consultas - Comando SELECT\" srcset=\"https:\/\/fpw.com.br\/m\/wp-content\/uploads\/2025\/01\/sql-select-1024x576.jpg 1024w, https:\/\/fpw.com.br\/m\/wp-content\/uploads\/2025\/01\/sql-select-300x169.jpg 300w, https:\/\/fpw.com.br\/m\/wp-content\/uploads\/2025\/01\/sql-select-768x432.jpg 768w, https:\/\/fpw.com.br\/m\/wp-content\/uploads\/2025\/01\/sql-select-150x85.jpg 150w, https:\/\/fpw.com.br\/m\/wp-content\/uploads\/2025\/01\/sql-select-600x338.jpg 600w, https:\/\/fpw.com.br\/m\/wp-content\/uploads\/2025\/01\/sql-select.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c4ea7cd e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"c4ea7cd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fa85d6f wpr-grid-columns-3 wpr-grid-columns--tablet2 wpr-grid-columns--mobile1 wpr-item-styles-inner elementor-widget elementor-widget-wpr-grid\" data-id=\"fa85d6f\" data-element_type=\"widget\" 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Avan\u00e7ado\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/span>\n\n\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t<\/div>\n\t\t\t<\/section>\n\n\t\t\t\n\t\t\t<section class=\"elementor-repeater-item-f655bbf wpr-pricing-table-item wpr-pricing-table-feature\">\n\t\t\t\t<div class=\"wpr-pricing-table-feature-inner\">\n\t\t\t\t\t\t\t\t\t\t\t<i class=\"wpr-pricing-table-feature-icon fas fa-check\"><\/i>\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t<span class=\"wpr-pricing-table-feature-text wpr-pricing-table-ftext-line-\">\n\t\t\t\t\t\t<span>\n\t\t\t\t\t\tFPw INtermedi\u00e1rio\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/span>\n\n\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t<\/div>\n\t\t\t<\/section>\n\n\t\t\t\n\t\t\t<div class=\"elementor-repeater-item-702a29f wpr-pricing-table-item wpr-pricing-table-button\">\t\t\n\t\t\t\n\t\t\t\n\t\t\t\t<a class=\"wpr-pricing-table-btn wpr-button-effect wpr-button-none\" href=\"https:\/\/fpw.com.br\/ead\/todos-os-cursos\/\" target=\"_blank\" rel=\"noopener noreferrer\">\n\t\t\t\t\t<span>\n\n\t\t\t\t\t\t\n\t\t\t\t\t\tAcessar\n\t\t\t\t\t\t\n\t\t\t\t\t<\/span>\n\t\t\t\t<\/a>\n\t\t\t\t\n\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t\t<div class=\"elementor-repeater-item-d45bc4a wpr-pricing-table-item wpr-pricing-table-text wpr-pricing-table-item-last\">\t\t\n\t\t\t\n\t\t\t\n\t\t\t\tuseo Cupom VALE50 e tenha 50% de desconto!\n\t\t\t\n\t\t\t<\/div>\n\t\t\t\t\t\t<div class=\"wpr-pricing-table-badge wpr-pricing-table-badge-corner wpr-pricing-table-badge-right\">\t\n\t\t\t\t<div class=\"wpr-pricing-table-badge-inner\">Sale<\/div>\t\n\t\t\t<\/div>\n\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c171d27 wpr-author-box-arrange-vertical elementor-widget elementor-widget-wpr-author-box\" data-id=\"c171d27\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wpr-author-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"wpr-author-box\"><div class=\"wpr-author-box-image\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/secure.gravatar.com\/avatar\/4d29370c4e3a80d286809ea97855951799d2f2ef82aa2bee944ce60205ad92b5?s=264&amp;d=mm&amp;r=g\" class=\"avatar avatar-264 photo\" height=\"264\" width=\"264\" \/><\/div><div class=\"wpr-author-box-text\"><h3 class=\"wpr-author-box-name\">Marco Chinarelli<\/h3><h3 class=\"wpr-author-box-title\">Writer &amp; Blogger<\/h3><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-009b7d3 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"009b7d3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Consultas &#8211; Comando SELECT Est\u00e1 p\u00e1gina cont\u00e9m links patrocinados! Introdu\u00e7\u00e3o ao Comando SELECT O comando\u00a0SELECT\u00a0\u00e9 uma das instru\u00e7\u00f5es mais fundamentais da linguagem SQL. Ele \u00e9 utilizado para consultar dados em um banco de dados relacional, permitindo que o usu\u00e1rio recupere informa\u00e7\u00f5es espec\u00edficas de uma ou mais tabelas. Neste artigo, vamos examinar os conceitos essenciais e as melhores pr\u00e1ticas para utilizar este comando de forma eficaz. A\u00a0linguagem SQL\u00a0\u00e9 a mais utilizada quando o assunto \u00e9 manipula\u00e7\u00e3o de banco de dados, e nesse artigo vamos aprender a trabalhar com essa linguagem e ver alguns exemplos. Comando SELECT O comando select \u00e9 o \u201ccomando base\u201d para todos os comandos de pesquisa de informa\u00e7\u00f5es no banco de dados. No comando abaixo, selecionamos todas as colunas select * from Produtos; Explica\u00e7\u00e3o no v\u00eddeo\u00a0 select id, valor from Produtos; Nesta consulta, selecionamos colunas espec\u00edficas\u00a0Seleciona os campos id e valor de todos os registros da tabela Produtos. Usando operadores aritm\u00e9ticos (usando ou n\u00e3o par\u00eanteses) Agora selecione os campos Produto, qte, valor, qte*valor, colhendo informa\u00e7\u00f5es de todos os registros da tabela Produtos e fazendo um c\u00e1lculo na pr\u00f3pria Consulta Regras de preced\u00eancia: multiplica\u00e7\u00e3o(*), divis\u00e3o(\/), adi\u00e7\u00e3o(+), subtra\u00e7\u00e3o(-). Multiplica\u00e7\u00e3o e divis\u00e3o t\u00eam prioridade sobre adi\u00e7\u00e3o e subtra\u00e7\u00e3o. Operadores de mesma prioridade s\u00e3o executados da esquerda para a direita. Par\u00eanteses podem ser usados para for\u00e7ar a prioridade dos c\u00e1lculos e tornar o entendimento das f\u00f3rmulas mais claro. select produto, qte, valor, qte*valor from Produtos; Neste caso estamos utilizando o operador de multiplica\u00e7\u00e3o *Importante: Os campos para serem calculados, devem ter seu conte\u00fado num\u00e9rico, se o conte\u00fado for texto, vai gerar uma erro na execu\u00e7\u00e3o da consulta.\u00a0Assista o v\u00eddeo abaixo para aprender na pr\u00e1tica.https:\/\/www.youtube.com\/watch?v=RGEGDPiJml4 Estrutura B\u00e1sica do Comando SELECT A estrutura b\u00e1sica de um comando\u00a0SELECT\u00a0\u00e9 bastante simples. Voc\u00ea inicia com a palavra-chave\u00a0SELECT, seguida das colunas que deseja recuperar, e a cl\u00e1usula\u00a0FROM\u00a0para especificar a tabela de onde os dados ser\u00e3o extra\u00eddos. Por exemplo:\u00a0SELECT coluna1, coluna2 FROM tabela;. Esta consulta retornar\u00e1 os dados das colunas indicadas na tabela especificada. Filtros e Condi\u00e7\u00f5es: WHERE e Outros Um dos recursos mais poderosos do comando\u00a0SELECT\u00a0\u00e9 a possibilidade de filtrar resultados usando a cl\u00e1usula\u00a0WHERE. Isso permite que voc\u00ea retorne apenas os registros que atendem a determinadas condi\u00e7\u00f5es. Al\u00e9m disso, voc\u00ea pode utilizar outras cl\u00e1usulas, como\u00a0ORDER BY\u00a0para ordenar resultados e\u00a0GROUP BY\u00a0para agregar dados. Por exemplo,\u00a0SELECT coluna1 FROM tabela WHERE condi\u00e7\u00e3o ORDER BY coluna1;\u00a0retornaria uma lista de valores filtrados e ordenados. All Posts Blog Certificados Diversos Excel FPw Membros Not\u00edcias Planilhas SQL Tecnologia WordPress SQL | Consultas &#8211; Comando SELECT Leia mais SQL | O que \u00e9 o SQL Server Management Studios? Leia mais Excel | Como Criar um Dashboard de Indicadores de RH Eficiente Leia mais Cursos Promo\u00e7\u00e3o R$ 500 00 \/Ano Excel para todos SQL do B\u00e1sico ao Avan\u00e7ado FPw INtermedi\u00e1rio Acessar useo Cupom VALE50 e tenha 50% de desconto! Sale Marco Chinarelli Writer &amp; Blogger<\/p>\n","protected":false},"author":2000,"featured_media":3876,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[60],"tags":[62,61],"class_list":["post-3875","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sql","tag-sql","tag-sql-o-que-e-o-sql-e-para-que-sever"],"jetpack_sharing_enabled":true,"amp_enabled":false,"jetpack_featured_media_url":"https:\/\/fpw.com.br\/m\/wp-content\/uploads\/2025\/01\/sql-select.jpg","_links":{"self":[{"href":"https:\/\/fpw.com.br\/m\/wp-json\/wp\/v2\/posts\/3875","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fpw.com.br\/m\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fpw.com.br\/m\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fpw.com.br\/m\/wp-json\/wp\/v2\/users\/2000"}],"replies":[{"embeddable":true,"href":"https:\/\/fpw.com.br\/m\/wp-json\/wp\/v2\/comments?post=3875"}],"version-history":[{"count":0,"href":"https:\/\/fpw.com.br\/m\/wp-json\/wp\/v2\/posts\/3875\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/fpw.com.br\/m\/wp-json\/wp\/v2\/media\/3876"}],"wp:attachment":[{"href":"https:\/\/fpw.com.br\/m\/wp-json\/wp\/v2\/media?parent=3875"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fpw.com.br\/m\/wp-json\/wp\/v2\/categories?post=3875"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fpw.com.br\/m\/wp-json\/wp\/v2\/tags?post=3875"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}