{"id":1660,"date":"2023-05-02T17:43:49","date_gmt":"2023-05-02T17:43:49","guid":{"rendered":"http:\/\/localhost\/codeera\/?p=1660"},"modified":"2023-05-02T18:09:19","modified_gmt":"2023-05-02T18:09:19","slug":"find-nth-highest-salary-in-5-different-ways","status":"publish","type":"post","link":"http:\/\/localhost\/codeera\/2023\/05\/02\/find-nth-highest-salary-in-5-different-ways\/","title":{"rendered":"Find Nth Highest Salary in 5 Different Ways"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"1660\" class=\"elementor elementor-1660\">\n\t\t\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-34fa1d1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"34fa1d1\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e4be614\" data-id=\"e4be614\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f4e5204 elementor-widget elementor-widget-text-editor\" data-id=\"f4e5204\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.11.1 - 15-02-2023 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#818a91;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#818a91;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p><!-- wp:list {\"ordered\":true} --><\/p><ol><li style=\"list-style-type: none;\"><ol><!-- wp:list-item --><\/ol><\/li><\/ol><p>here are five different ways to write a SQL query to find the nth highest salary from the employee table:<br \/><br \/><\/p><h5><strong>\u00a0Method 1: Using Subquery and Limit Clause<\/strong><\/h5><pre><strong>SELECT salary <\/strong><br \/><strong>FROM employee <\/strong><br \/><strong>ORDER BY salary DESC <\/strong><br \/><strong>LIMIT n-1, 1;<\/strong><\/pre><p>In this method, we are first ordering the rows in the employee table in descending order based on the salary column. We then use the LIMIT clause to skip the first n-1 rows and select the next row. This will give us the nth highest salary in the table.<\/p><h5><br \/><strong>Method 2: Using the Outer Query and Subquery<\/strong><\/h5><pre class=\"wp-block-preformatted\"><code><strong>SELECT DISTINCT salary <br \/>FROM employee emp1 <br \/>WHERE n-1 = (<br \/>SELECT COUNT(DISTINCT salary) <br \/>FROM employee emp2 <br \/>WHERE emp2.salary &gt; emp1.salary<br \/>);\n<\/strong><\/code><\/pre><p>In this method, we are using a subquery to count the number of distinct salaries in the employee table that are greater than the salary in the outer query. We then use the WHERE clause to select the row with the count equal to n-1, which will give us the nth highest salary.<br \/><br \/><\/p><h5><strong>Method 3: Using Subquery with TOP<\/strong><\/h5><p><!-- \/wp:paragraph --><!-- wp:preformatted --><\/p><pre class=\"wp-block-preformatted\"><code><b>   SELECT TOP 1 salary FROM (<br \/>SELECT DISTINCT TOP n salary FROM employee ORDER BY salary DESC<br \/>) AS emp ORDER BY salary ASC;<br \/><\/b><\/code><\/pre><p>In this method, we use a subquery to select the top n distinct salaries in descending order. Then, we select the top 1 salary from this subquery in ascending order, which will give us the nth highest salary.<\/p><p>\u00a0<\/p><div class=\"bg-black rounded-md mb-4\"><h5 class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans justify-between rounded-t-md\"><strong>Method 4: Using ROW_NUMBER()<br \/><\/strong><\/h5><\/div><pre class=\"wp-block-preformatted\"><code><b>SELECT salary FROM (<br \/>SELECT salary, ROW_NUMBER() OVER (ORDER BY salary DESC) AS rn FROM employee<br \/>) AS emp WHERE rn = n; <\/b><\/code><\/pre><p>\u00a0 \u00a0 \u00a0 In this method, we use the ROW_NUMBER() function to assign a row number to each salary in descending order. Then, we select the salary where the row number is equal to n, which will give us the nth highest salary.<\/p><h5><br \/><strong>Method 5: Using a Self Join<\/strong><strong><br \/><\/strong><\/h5><pre class=\"wp-block-preformatted\"><code><b>SELECT DISTINCT emp1.salary FROM employee emp1 <br \/>LEFT JOIN employee emp2 ON emp1.salary &lt; emp2.salary <br \/>GROUP BY emp1.salary <br \/>HAVING COUNT(DISTINCT emp2.salary) = n-1;<br \/><\/b><\/code><\/pre><p>\u00a0 In this method, we use a self join to join the employee table with itself on the condition that emp1.salary is less than emp2.salary. We then group by emp1.salary and count the number of distinct salaries in emp2 that are greater than emp1.salary. Finally, we select the salary from emp1 where the count is equal to n-1, which will give us the nth highest salary.<br \/><br \/>These five methods are just a few examples of how to write a SQL query to find the nth highest salary from the employee table. Depending on the specific database and use case, there may be other approaches as well.<\/p><p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p><p><!-- \/wp:paragraph --><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"http:\/\/localhost\/codeera\/wp-json\/wp\/v2\/posts\/1660"}],"collection":[{"href":"http:\/\/localhost\/codeera\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/localhost\/codeera\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/localhost\/codeera\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/localhost\/codeera\/wp-json\/wp\/v2\/comments?post=1660"}],"version-history":[{"count":10,"href":"http:\/\/localhost\/codeera\/wp-json\/wp\/v2\/posts\/1660\/revisions"}],"predecessor-version":[{"id":1674,"href":"http:\/\/localhost\/codeera\/wp-json\/wp\/v2\/posts\/1660\/revisions\/1674"}],"wp:attachment":[{"href":"http:\/\/localhost\/codeera\/wp-json\/wp\/v2\/media?parent=1660"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/localhost\/codeera\/wp-json\/wp\/v2\/categories?post=1660"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/localhost\/codeera\/wp-json\/wp\/v2\/tags?post=1660"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}