{"id":11492,"date":"2023-10-22T20:38:14","date_gmt":"2023-10-23T03:38:14","guid":{"rendered":"https:\/\/www.mysqltutorial.org\/?page_id=11492"},"modified":"2023-10-22T20:40:04","modified_gmt":"2023-10-23T03:40:04","slug":"mysql-to_days","status":"publish","type":"page","link":"https:\/\/www.mysqltutorial.org\/mysql-date-functions\/mysql-to_days\/","title":{"rendered":"MySQL TO_DAYS() Function"},"content":{"rendered":"\n<p><strong>Summary<\/strong>: in this tutorial, you will learn how to use the MySQL <code>TO_DAYS()<\/code> function to return the number of days since year 0 for a given date.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Introduction to the MySQL TO_DAYS() function<\/h2>\n\n\n\n<p>The <code>TO_DAYS()<\/code> function allows you to get the number of days for since year 0 for a given date. <\/p>\n\n\n\n<p>Here&#8217;s the syntax of the <code>TO_DAYS()<\/code> function:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\">TO_DAYS(date)<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>In this syntax:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>date<\/code>: The <a href=\"https:\/\/www.mysqltutorial.org\/mysql-basics\/mysql-date\/\">date<\/a> or <a href=\"https:\/\/www.mysqltutorial.org\/mysql-basics\/mysql-datetime\/\">datetime<\/a> value that you want to calculate the number of days since year 0.<\/li>\n<\/ul>\n\n\n\n<p>The <code>TO_DAYS()<\/code> function returns an integer that represents the number of days from the year 0 to the given <code>date<\/code>. It returns NULL if the date argument is NULL.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">MySQL TO_DAYS() function examples<\/h2>\n\n\n\n<p>Let&#8217;s take some examples of using the <code>TO_DAYS()<\/code> function.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1) Using the TO_DAYS() function to convert a date to a numeric value<\/h3>\n\n\n\n<p>The following example uses the <code>TO_DAYS()<\/code> function to get the number of days since year zero for the date 2023-10-23:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-2\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">SELECT<\/span> <span class=\"hljs-keyword\">TO_DAYS<\/span>(<span class=\"hljs-string\">'2023-10-23'<\/span>);<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-2\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Output:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-3\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\">+<span class=\"hljs-comment\">-----------------------+<\/span>\n| TO_DAYS('2023-10-23') |\n+<span class=\"hljs-comment\">-----------------------+<\/span>\n|                739181 |\n+<span class=\"hljs-comment\">-----------------------+<\/span>\n1 row in <span class=\"hljs-keyword\">set<\/span> (<span class=\"hljs-number\">0.00<\/span> sec)<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-3\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>The result is 739181 which represents the number of days from the year 0 to the specified date  2023-10-23.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2) Using the TO_DAYS() function to calculate the difference in days between two dates<\/h3>\n\n\n\n<p>The following example uses the <code>TO_DAYS()<\/code> function to calculate the difference in days between two dates:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-4\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">SELECT<\/span> \n  <span class=\"hljs-keyword\">TO_DAYS<\/span>(<span class=\"hljs-string\">'2023-11-15'<\/span>) - <span class=\"hljs-keyword\">TO_DAYS<\/span>(<span class=\"hljs-string\">'2023-10-23'<\/span>) <span class=\"hljs-keyword\">AS<\/span> days_difference;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-4\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Output:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-5\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\">+<span class=\"hljs-comment\">-----------------+<\/span>\n| days_difference |\n+<span class=\"hljs-comment\">-----------------+<\/span>\n|              23 |\n+<span class=\"hljs-comment\">-----------------+<\/span>\n1 row in <span class=\"hljs-keyword\">set<\/span> (<span class=\"hljs-number\">0.01<\/span> sec)<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-5\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">SQL (Structured Query Language)<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">sql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>The function returns the number of days between two dates, &#8216;2023-10-23&#8217; and &#8216;2023-11-15&#8217;, which in this case is 23 days.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Summary<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use the <code>TO_DAYS()<\/code> function to return the number of days since year 0 for a given date.<\/li>\n<\/ul>\n<div class=\"helpful-block-content\" data-title=\"\">\n\t<header>\n\t\t<div class=\"wth-question\">Was this tutorial helpful? <\/div>\n\t\t<div 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