{"id":1449,"date":"2019-03-01T08:46:26","date_gmt":"2019-03-01T01:46:26","guid":{"rendered":"http:\/\/www.sqlservertutorial.net\/?page_id=1449"},"modified":"2024-03-02T18:31:24","modified_gmt":"2024-03-02T11:31:24","slug":"sql-server-datefromparts-function","status":"publish","type":"page","link":"https:\/\/www.sqlservertutorial.net\/sql-server-date-functions\/sql-server-datefromparts-function\/","title":{"rendered":"SQL Server DATEFROMPARTS() Function"},"content":{"rendered":"\n<p><strong>Summary<\/strong>: in this tutorial, you will learn how to use the SQL Server <code>DATEFROMPARTS()<\/code> function to construct a date from year, month, and day.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='sql-server-datefromparts-function-overview'>SQL Server DATEFROMPARTS() function overview <a href=\"#sql-server-datefromparts-function-overview\" class=\"anchor\" id=\"sql-server-datefromparts-function-overview\" title=\"Anchor for SQL Server DATEFROMPARTS() function overview\">#<\/a><\/h2>\n\n\n\n<p>The <code>DATEFROMPARTS()<\/code> function returns a <code><a href=\"https:\/\/www.sqlservertutorial.net\/sql-server-basics\/sql-server-date\/\">DATE<\/a><\/code> value that maps to a year, month, and day.<\/p>\n\n\n\n<p>Here&#8217;s the syntax of the <code>DATEFROMPARTS()<\/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\">DATEFROMPARTS(year, month, day)<\/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>The <code>DATEFROMPARTS()<\/code> function accepts three arguments:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>year<\/code> is an integer expression that resolves to a year<\/li>\n\n\n\n<li><code>month<\/code> is an integer expression that evaluates to a month, ranging from 1 to 12.<\/li>\n\n\n\n<li><code>day<\/code> is an integer expression that specifies a day, ranging from 1 to 31<\/li>\n<\/ul>\n\n\n\n<p>The <code>DATEFROMPARTS()<\/code> function returns a <code>DATE<\/code> value. If any argument is NULL, the function will return NULL.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='sql-server-datefromparts-function-examples'>SQL Server DATEFROMPARTS() function examples <a href=\"#sql-server-datefromparts-function-examples\" class=\"anchor\" id=\"sql-server-datefromparts-function-examples\" title=\"Anchor for SQL Server DATEFROMPARTS() function examples\">#<\/a><\/h2>\n\n\n\n<p>Let&#8217;s take some examples of using the <code>DATEFROMPARTS()<\/code> function.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id='1-basic-sql-server-datefromparts-function-example'>1) Basic SQL Server DATEFROMPARTS() function example <a href=\"#1-basic-sql-server-datefromparts-function-example\" class=\"anchor\" id=\"1-basic-sql-server-datefromparts-function-example\" title=\"Anchor for 1) Basic SQL Server DATEFROMPARTS() function example\">#<\/a><\/h3>\n\n\n\n<p>The following example uses the <code>DATEFROMPARTS()<\/code> function to construct a date from year, month, and day values:<\/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> \n    <span class=\"hljs-keyword\">DATEFROMPARTS<\/span>(<span class=\"hljs-number\">2020<\/span>,<span class=\"hljs-number\">12<\/span>,<span class=\"hljs-number\">31<\/span>) a_date;<\/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>Here is the 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\">a_date\n<span class=\"hljs-comment\">----------<\/span>\n2020-12-31\n\n(1 row affected)\n<\/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<h3 class=\"wp-block-heading\" id='2-using-the-datefromparts-function-with-null-example'>2) Using the DATEFROMPARTS() function with NULL example <a href=\"#2-using-the-datefromparts-function-with-null-example\" class=\"anchor\" id=\"2-using-the-datefromparts-function-with-null-example\" title=\"Anchor for 2) Using the DATEFROMPARTS() function with NULL example\">#<\/a><\/h3>\n\n\n\n<p>The following example returns NULL because the <code>month<\/code> argument is NULL:<\/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\">DATEFROMPARTS<\/span>(<span class=\"hljs-number\">2020<\/span>,<span class=\"hljs-literal\">null<\/span>,<span class=\"hljs-number\">31<\/span>) a_date;<\/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\">a_date\n<span class=\"hljs-comment\">----------<\/span>\nNULL\n\n(1 row affected)\n<\/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<h3 class=\"wp-block-heading\" id='3-using-the-datefromparts-function-with-invalid-arguments'>3) Using the DATEFROMPARTS() function with invalid arguments <a href=\"#3-using-the-datefromparts-function-with-invalid-arguments\" class=\"anchor\" id=\"3-using-the-datefromparts-function-with-invalid-arguments\" title=\"Anchor for 3) Using the DATEFROMPARTS() function with invalid arguments\">#<\/a><\/h3>\n\n\n\n<p>The following statement uses the <code>DATEFROMPARTS()<\/code> function with an invalid day value (-1), which results in an error:<\/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> \n    <span class=\"hljs-keyword\">DATEFROMPARTS<\/span>(<span class=\"hljs-number\">2020<\/span>,<span class=\"hljs-number\">20<\/span>,<span class=\"hljs-number\">-1<\/span>) a_date;<\/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>The following shows the error message:<\/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\">Cannot construct data type date, some of the arguments have <span class=\"hljs-keyword\">values<\/span> which <span class=\"hljs-keyword\">are<\/span> <span class=\"hljs-keyword\">not<\/span> valid.<\/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<h2 class=\"wp-block-heading\" id='summary'>Summary <a href=\"#summary\" class=\"anchor\" id=\"summary\" title=\"Anchor for Summary\">#<\/a><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use the <code>DATEFROMPARTS()<\/code>function to construct a <code>DATE<\/code> value from its part including year, month, and day.<\/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 class=\"wth-thumbs\">\n\t\t\t<button\n\t\t\t\tdata-post=\"1449\"\n\t\t\t\tdata-post-url=\"https:\/\/www.sqlservertutorial.net\/sql-server-date-functions\/sql-server-datefromparts-function\/\"\n\t\t\t\tdata-post-title=\"SQL Server DATEFROMPARTS() Function\"\n\t\t\t\tdata-response=\"1\"\n\t\t\t\tclass=\"wth-btn-rounded wth-yes-btn\"\n\t\t\t>\n\t\t\t\t<svg\n\t\t\t\t\txmlns=\"http:\/\/www.w3.org\/2000\/svg\"\n\t\t\t\t\tviewBox=\"0 0 24 24\"\n\t\t\t\t\tfill=\"none\"\n\t\t\t\t\tstroke=\"currentColor\"\n\t\t\t\t\tstroke-width=\"2\"\n\t\t\t\t\tstroke-linecap=\"round\"\n\t\t\t\t\tstroke-linejoin=\"round\"\n\t\t\t\t\tclass=\"feather feather-thumbs-up block w-full h-full\"\n\t\t\t\t>\n\t\t\t\t\t<path\n\t\t\t\t\t\td=\"M14 9V5a3 3 0 0 0-3-3l-4 9v11h11.28a2 2 0 0 0 2-1.7l1.38-9a2 2 0 0 0-2-2.3zM7 22H4a2 2 0 0 1-2-2v-7a2 2 0 0 1 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