{"id":29153,"date":"2024-04-12T17:26:23","date_gmt":"2024-04-12T16:26:23","guid":{"rendered":"https:\/\/nelkodev.com\/blog\/descifrando-los-booleanos-en-mysql-uso-del-tinyint1\/"},"modified":"2024-06-03T17:44:45","modified_gmt":"2024-06-03T16:44:45","slug":"descifrando-los-booleanos-en-mysql-uso-del-tinyint1","status":"publish","type":"post","link":"https:\/\/nelkodev.com\/en\/blog\/decrypting-booleans-in-mysql-using-tinyint1\/","title":{"rendered":"Decoding Booleans in MySQL: Using TINYINT(1)"},"content":{"rendered":"<p>When entering the world of databases, especially with MySQL, it is common to encounter numerous types of data, each with its specificities. One of the aspects that frequently confuses new developers is the handling of Boolean values. Although in many programming languages, a Boolean data type is fairly standard, MySQL handles this concept in a peculiar way: using the Boolean data type <code>TINYINT(1)<\/code>. In this text, we will delve into how MySQL internally manages Boolean values and how we can efficiently work with it in our database designs.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_80 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #ffffff;color:#ffffff\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #ffffff;color:#ffffff\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/nelkodev.com\/en\/blog\/decrypting-booleans-in-mysql-using-tinyint1\/#Entendiendo_el_Tipo_de_Dato_TINYINT\" >Understanding the TINYINT Data Type<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/nelkodev.com\/en\/blog\/decrypting-booleans-in-mysql-using-tinyint1\/#La_Conversion_a_Booleano\" >Conversion to Boolean<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/nelkodev.com\/en\/blog\/decrypting-booleans-in-mysql-using-tinyint1\/#Interpretacion_de_los_Valores\" >Interpretation of Values<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/nelkodev.com\/en\/blog\/decrypting-booleans-in-mysql-using-tinyint1\/#Declaracion_y_Uso_en_SQL\" >Declaration and Use in SQL<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/nelkodev.com\/en\/blog\/decrypting-booleans-in-mysql-using-tinyint1\/#Buenas_Practicas_y_Consideraciones\" >Good Practices and Considerations<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/nelkodev.com\/en\/blog\/decrypting-booleans-in-mysql-using-tinyint1\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"Entendiendo_el_Tipo_de_Dato_TINYINT\"><\/span>Understanding the TINYINT Data Type<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Before we get into the details of how MySQL handles Booleans, it is essential to understand what the <code>TINYINT<\/code>. In MySQL, <code>TINYINT<\/code> It is an integer data type that takes up very little space, specifically one byte. This data type can contain values from -128 to 127, or 0 to 255 if defined as unsigned.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"La_Conversion_a_Booleano\"><\/span>Conversion to Boolean<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>When working with values that represent true or false, MySQL does not have a native boolean data type as such. Instead, use <code>TINYINT(1)<\/code> to emulate this behavior. Here the <code>1<\/code> It does not refer to the number of bits it uses, but is simply a convention to indicate that that field is intended to be used to store boolean values.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Interpretacion_de_los_Valores\"><\/span>Interpretation of Values<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>In this adaptation of the Boolean with <code>TINYINT(1)<\/code>, the values 0 and 1 are the main protagonists: 0 represents <code>false<\/code> (false) and 1 represents <code>true<\/code> (TRUE). It is crucial to understand that any value other than zero will be interpreted as <code>true<\/code> in MySQL. This means that if, by mistake or ignorance, we store values such as 2, -1 or any other non-zero, these will be interpreted as <code>true<\/code>, which can lead to unexpected behavior if not handled properly.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Declaracion_y_Uso_en_SQL\"><\/span>Declaration and Use in SQL<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>When we declare a column of type <code>TINYINT(1)<\/code>, we can choose to use the syntax of <code>BOOLEAN<\/code> o <code>BOOL<\/code>, which are aliases of <code>TINYINT(1)<\/code> by convention in MySQL. Here is an example of how you could define a table with a boolean field:<\/p>\n<pre><code class=\"&quot;language-sql&quot;\">CREATE TABLE example ( id INT AUTO_INCREMENT, is_active BOOLEAN DEFAULT 1, PRIMARY KEY (id) );<\/code><\/pre>\n<p>In this example, <code>is active<\/code> is a field intended to be used to store boolean values, and is defined as <code>BOOLEAN<\/code>, which is more intuitive for anyone reading the database design.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Buenas_Practicas_y_Consideraciones\"><\/span>Good Practices and Considerations<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>It is essential to design databases with clarity in mind, especially when using data types that can lead to confusion such as <code>TINYINT(1)<\/code> for booleans. Here are some recommendations:<\/p>\n<ul>\n<li>\n<p><strong>Clarity in Documentation<\/strong>: Be sure to clearly document that fields defined as <code>TINYINT(1)<\/code> They are intended to simulate boolean values.<\/p>\n<\/li>\n<li>\n<p><strong>Default Values<\/strong>: It is practical to define a default value (<code>DEFAULT<\/code>) coherent as <code>0<\/code> o <code>1<\/code>, to prevent inconsistencies and maintain the integrity of the database.<\/p>\n<\/li>\n<li>\n<p><strong>Validations in Applications<\/strong>: When inserting or updating data in these fields from applications, validates that the values are within the expected limits (0 or 1).<\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Although MySQL does not handle booleans in a direct way like other database systems, the use of <code>TINYINT(1)<\/code> It is an effective and economical solution in terms of storage. With proper implementation and documentation, working with booleans in MySQL can be handled in a way that is intuitive and efficient. Be sure to visit <a href=\"https:\/\/nelkodev.com\/en\/\">nelkodev.com<\/a> for more resources, guides and tips on database management and other development topics. If you have any questions, please feel free to contact me via <a href=\"https:\/\/nelkodev.com\/en\/contact\/\">this page<\/a>. Happy coding!<\/p>","protected":false},"excerpt":{"rendered":"<p>When delving into the world of databases, especially MySQL, it&#039;s common to encounter numerous data types, each with its own specificities. One aspect that frequently confuses new developers is the handling of Boolean values. Although in many programming languages, a Boolean data type [\u2026]<\/p>","protected":false},"author":1,"featured_media":29154,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[420,2185,2033],"tags":[205,2163,2189,639,172,1486,221,352,2161,2194,512],"class_list":["post-29153","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-curso-mysql","category-mysql-data-types","tag-blog","tag-booleanos","tag-curso","tag-data","tag-del","tag-descifrando","tag-los","tag-mysql","tag-tinyint1","tag-types","tag-uso"],"_links":{"self":[{"href":"https:\/\/nelkodev.com\/en\/wp-json\/wp\/v2\/posts\/29153","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nelkodev.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nelkodev.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nelkodev.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nelkodev.com\/en\/wp-json\/wp\/v2\/comments?post=29153"}],"version-history":[{"count":0,"href":"https:\/\/nelkodev.com\/en\/wp-json\/wp\/v2\/posts\/29153\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nelkodev.com\/en\/wp-json\/wp\/v2\/media\/29154"}],"wp:attachment":[{"href":"https:\/\/nelkodev.com\/en\/wp-json\/wp\/v2\/media?parent=29153"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nelkodev.com\/en\/wp-json\/wp\/v2\/categories?post=29153"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nelkodev.com\/en\/wp-json\/wp\/v2\/tags?post=29153"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}