{"id":11418,"date":"2023-10-18T20:55:41","date_gmt":"2023-10-19T03:55:41","guid":{"rendered":"https:\/\/www.mysqltutorial.org\/?page_id=11418"},"modified":"2023-10-18T23:29:41","modified_gmt":"2023-10-19T06:29:41","slug":"mysql-unix_timestamp","status":"publish","type":"page","link":"https:\/\/www.mysqltutorial.org\/mysql-date-functions\/mysql-unix_timestamp\/","title":{"rendered":"MySQL UNIX_TIMESTAMP() Function"},"content":{"rendered":"\n<p><strong>Summary<\/strong>: in this tutorial, you will learn how to use the MySQL <code>UNIX_TIMESTAMP()<\/code> function to convert a datetime value to a Unix timestamp.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Introduction to MySQL UNIX_TIMESTAMP() function<\/h2>\n\n\n\n<p>A Unix timestamp presents the number of seconds that have passed since&nbsp;<code>'1970-01-01 00:00:00'<\/code>&nbsp;UTC.<\/p>\n\n\n\n<p>The <code>UNIX_TIMESTAMP()<\/code> function converts a date to a Unix timestamp. Here&#8217;s the syntax of the <code>UNIX_TIMESTAMP()<\/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\">UNIX_TIMESTAMP(&#91;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>: This optional parameter specifies a date value that you want to convert into a Unix timestamp. If you omit it, the function returns the <strong>current <\/strong>Unix timestamp.<\/li>\n<\/ul>\n\n\n\n<p>The <code>UNIX_TIMESTAMP()<\/code> function returns an integer that represents the Unix timestamp of the specified date. <\/p>\n\n\n\n<p>If the <code>date<\/code> contains a fractional part of the seconds, the <code>UNIX_TIMESTAMP()<\/code> returns a decimal number that represents the Unix timestamp.<\/p>\n\n\n\n<p>If the date is <code>NULL<\/code>, the <code>UNIX_TIMESTAMP()<\/code> function returns <code>NULL<\/code>.<\/p>\n\n\n\n<p>Notice that if you pass an out-of-range date to the function, it&#8217;ll return 0.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">MySQL UNIX_TIMESTAMP() function examples<\/h2>\n\n\n\n<p>Let&#8217;s take some examples of using the <code>UNIX_TIMESTAMP()<\/code> function.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1) Basic UNIX_TIMESTAMP() function examples<\/h3>\n\n\n\n<p>The following example uses the <code>UNIX_TIMESTAMP()<\/code> function to convert a date to a Unix timestamp:<\/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\">UNIX_TIMESTAMP<\/span>(<span class=\"hljs-string\">'2023-10-19 10:45:30'<\/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| UNIX_TIMESTAMP('2023-10-19 10:45:30') |\n+<span class=\"hljs-comment\">---------------------------------------+<\/span>\n|                            1697687130 |\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>If the datetime value contains a fractional part of seconds, the <code>UNIX_TIMESTAMP()<\/code> returns a decimal instead. For example:<\/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> <span class=\"hljs-keyword\">UNIX_TIMESTAMP<\/span>(<span class=\"hljs-string\">'2023-10-19 10:45:30.9999'<\/span>);<\/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| UNIX_TIMESTAMP('2023-10-19 10:45:30.9999') |\n+<span class=\"hljs-comment\">--------------------------------------------+<\/span>\n|                            1697687130.9999 |\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-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>If you omit the date value, the function returns the current Unix timestamp:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-6\" 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\">UNIX_TIMESTAMP<\/span>();<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-6\"><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-7\" 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| UNIX_TIMESTAMP() |\n+<span class=\"hljs-comment\">------------------+<\/span>\n|       1697686981 |\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-7\"><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 following example returns 0 because the date is invalid:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-8\" 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\">UNIX_TIMESTAMP<\/span>(<span class=\"hljs-string\">'2023-99-99 10:45:30'<\/span>);<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-8\"><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-9\" 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| UNIX_TIMESTAMP('2023-99-99 10:45:30') |\n+<span class=\"hljs-comment\">---------------------------------------+<\/span>\n|                              0.000000 |\n+<span class=\"hljs-comment\">---------------------------------------+<\/span>\n1 row in <span class=\"hljs-keyword\">set<\/span>, <span class=\"hljs-number\">1<\/span> <span class=\"hljs-keyword\">warning<\/span> (<span class=\"hljs-number\">0.00<\/span> sec)<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-9\"><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<h3 class=\"wp-block-heading\">2) Using the UNIX_TIMESTAMP() function with table example<\/h3>\n\n\n\n<p>First,&nbsp;<a href=\"https:\/\/www.mysqltutorial.org\/mysql-basics\/mysql-create-table\/\">create a new table<\/a>&nbsp;that stores the event data with Unix timestamps:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-10\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">CREATE<\/span> <span class=\"hljs-keyword\">TABLE<\/span> <span class=\"hljs-keyword\">events<\/span>(\n    <span class=\"hljs-keyword\">id<\/span> <span class=\"hljs-built_in\">INT<\/span> AUTO_INCREMENT PRIMARY <span class=\"hljs-keyword\">KEY<\/span>,\n    event_name <span class=\"hljs-built_in\">VARCHAR<\/span>(<span class=\"hljs-number\">50<\/span>) <span class=\"hljs-keyword\">NOT<\/span> <span class=\"hljs-literal\">NULL<\/span>,\n    event_time <span class=\"hljs-built_in\">INT<\/span> <span class=\"hljs-keyword\">NOT<\/span> <span class=\"hljs-literal\">NULL<\/span>\n);<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-10\"><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 <code>events<\/code> table has three columns: id, <code>event_name<\/code>, and <code>event_time<\/code>. The data type of the <code>event_time<\/code> is an integer that stores the Unix timestamps.<\/p>\n\n\n\n<p>Second,&nbsp;<a href=\"https:\/\/www.mysqltutorial.org\/mysql-basics\/mysql-insert-multiple-rows\/\">insert some rows<\/a>&nbsp;into the&nbsp;<code>events<\/code>&nbsp;table:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-11\" data-shcb-language-name=\"SQL (Structured Query Language)\" data-shcb-language-slug=\"sql\"><span><code class=\"hljs language-sql\"><span class=\"hljs-keyword\">INSERT<\/span> <span class=\"hljs-keyword\">INTO<\/span> <span class=\"hljs-keyword\">events<\/span>(event_name, event_time ) \n<span class=\"hljs-keyword\">VALUES<\/span>\n    (<span class=\"hljs-string\">'MySQL Enterprise Workshop'<\/span>, <span class=\"hljs-keyword\">UNIX_TIMESTAMP<\/span>(<span class=\"hljs-string\">'2021-10-19 15:00:00'<\/span>)), \n    (<span class=\"hljs-string\">'MySQL HeatWave and Database Day'<\/span>, <span class=\"hljs-keyword\">UNIX_TIMESTAMP<\/span>(<span class=\"hljs-string\">'2021-12-31 23:00:00'<\/span>)), \n    (<span class=\"hljs-string\">'MySQL HeatWave Hands-on Lab'<\/span>, <span class=\"hljs-keyword\">UNIX_TIMESTAMP<\/span>(<span class=\"hljs-string\">'2022-06-01 12:20:00'<\/span>));<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-11\"><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 statement uses the <code>UNIX_TIMESTAMP()<\/code> function to convert date values into Unix timestamps.<\/p>\n\n\n\n<p>Third, query data from the&nbsp;<code>events<\/code>&nbsp;table and format the values in the&nbsp;<code>event_time<\/code>&nbsp;column using the&nbsp;<code>FROM_UNIXTIME()<\/code>&nbsp;function:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-12\" 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  event_name, \n  FROM_UNIXTIME(event_time) <span class=\"hljs-keyword\">AS<\/span> event_time \n<span class=\"hljs-keyword\">FROM<\/span> \n  <span class=\"hljs-keyword\">events<\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-12\"><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-13\" 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| event_name                      | event_time          |\n+<span class=\"hljs-comment\">---------------------------------+---------------------+<\/span>\n| MySQL Enterprise Workshop       | 2021-10-19 15:00:00 |\n| MySQL HeatWave and Database Day | 2021-12-31 23:00:00 |\n| MySQL HeatWave Hands-on Lab     | 2022-06-01 12:20:00 |\n+<span class=\"hljs-comment\">---------------------------------+---------------------+<\/span>\n3 rows in <span class=\"hljs-keyword\">set<\/span> (<span class=\"hljs-number\">0.00<\/span> sec)<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-13\"><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<h2 class=\"wp-block-heading\">Summary<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use the MySQL <code>UNIX_TIMESTAMP()<\/code> function to convert a datetime value to a Unix timestamp.<\/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? 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Introduction to MySQL UNIX_TIMESTAMP() function A Unix timestamp presents the number of seconds that have passed since&nbsp;&#8216;1970-01-01 00:00:00&#8242;&nbsp;UTC. The UNIX_TIMESTAMP() function converts a date to a Unix timestamp. Here&#8217;s the syntax of [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":7032,"menu_order":21,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-11418","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>MySQL UNIX_TIMESTAMP() Function<\/title>\n<meta name=\"description\" content=\"In this tutorial, you will learn how to use the MySQL UNIX_TIMESTAMP() function to convert a datetime value to a Unix timestamp.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.mysqltutorial.org\/mysql-date-functions\/mysql-unix_timestamp\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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