{"id":485,"date":"2024-11-29T15:01:41","date_gmt":"2024-11-29T08:01:41","guid":{"rendered":"https:\/\/www.pgtutorial.com\/?page_id=485"},"modified":"2025-01-02T10:57:50","modified_gmt":"2025-01-02T03:57:50","slug":"postgresql-intersect","status":"publish","type":"page","link":"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-intersect\/","title":{"rendered":"PostgreSQL INTERSECT Operator"},"content":{"rendered":"\n<p><strong>Summary<\/strong>: in this tutorial, you&#8217;ll learn how to use the PostgreSQL <code>INTERSECT<\/code> operator to find common records of two result sets.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='getting-started-with-postgresql-intersect-operator'>Getting started with PostgreSQL INTERSECT operator <a href=\"#getting-started-with-postgresql-intersect-operator\" class=\"anchor\" id=\"getting-started-with-postgresql-intersect-operator\" title=\"Anchor for Getting started with PostgreSQL INTERSECT operator\">#<\/a><\/h2>\n\n\n\n<p>The <code>INTERSECT<\/code> operator returns the common records of result sets of two queries. In other words, it returns the intersection of two result sets.<\/p>\n\n\n\n<p>Here&#8217;s the syntax of the <code>INTERSECT<\/code> operator:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\"><span class=\"hljs-keyword\">SELECT<\/span> column1, column2 \n<span class=\"hljs-keyword\">FROM<\/span> table1;\n<span class=\"hljs-keyword\">INTERSECT<\/span>\n<span class=\"hljs-keyword\">SELECT<\/span> column1, column2 \n<span class=\"hljs-keyword\">FROM<\/span> table2;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PostgreSQL SQL dialect and PL\/pgSQL<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">pgsql<\/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>First, provide two <code><a href=\"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-select\/\">SELECT<\/a><\/code> statements that returns two result set for intersection.<\/li>\n\n\n\n<li>Second, use the <code>INTERSECT<\/code> operator between the two <code>SELECT<\/code> statements to find the intersection between the two result sets.<\/li>\n<\/ul>\n\n\n\n<p>Both <code>SELECT<\/code> statements need to adhere to the following rules:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Having the same number of columns in the result sets.<\/li>\n\n\n\n<li>The corresponding columns have compatible data types.<\/li>\n<\/ul>\n\n\n\n<p>The <code>INTERSECT<\/code> operator will include distinct rows from both queries:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"973\" height=\"264\" src=\"https:\/\/www.pgtutorial.com\/wp-content\/uploads\/2024\/11\/postgresql-intersect.png\" alt=\"postgresql intersect\" class=\"wp-image-517\" srcset=\"https:\/\/www.pgtutorial.com\/wp-content\/uploads\/2024\/11\/postgresql-intersect.png 973w, https:\/\/www.pgtutorial.com\/wp-content\/uploads\/2024\/11\/postgresql-intersect-300x81.png 300w, https:\/\/www.pgtutorial.com\/wp-content\/uploads\/2024\/11\/postgresql-intersect-768x208.png 768w\" sizes=\"auto, (max-width: 973px) 100vw, 973px\" \/><\/figure>\n\n\n\n<p>To include duplicate rows in the result, you can use the <code>INTERSECT ALL<\/code> operator:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-2\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\"><span class=\"hljs-keyword\">SELECT<\/span> column1, column2\n<span class=\"hljs-keyword\">FROM<\/span> tableA\n<span class=\"hljs-keyword\">INTERSECT<\/span> <span class=\"hljs-keyword\">ALL<\/span>\n<span class=\"hljs-keyword\">SELECT<\/span> column1, column2 \n<span class=\"hljs-keyword\">FROM<\/span> tableB;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-2\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PostgreSQL SQL dialect and PL\/pgSQL<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">pgsql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"973\" height=\"264\" src=\"https:\/\/www.pgtutorial.com\/wp-content\/uploads\/2024\/11\/postgresql-intersect-all.png\" alt=\"postgresql intersect all\" class=\"wp-image-518\" srcset=\"https:\/\/www.pgtutorial.com\/wp-content\/uploads\/2024\/11\/postgresql-intersect-all.png 973w, https:\/\/www.pgtutorial.com\/wp-content\/uploads\/2024\/11\/postgresql-intersect-all-300x81.png 300w, https:\/\/www.pgtutorial.com\/wp-content\/uploads\/2024\/11\/postgresql-intersect-all-768x208.png 768w\" sizes=\"auto, (max-width: 973px) 100vw, 973px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id='setting-up-sample-tables'>Setting up sample tables <a href=\"#setting-up-sample-tables\" class=\"anchor\" id=\"setting-up-sample-tables\" title=\"Anchor for Setting up sample tables\">#<\/a><\/h2>\n\n\n\n<p>Suppose we have two tables: <code>slow_movings<\/code> and <code>flagships<\/code>. <\/p>\n\n\n\n<p>The <code>slow_movings<\/code> table stores the slow moving products and the <code>flagships<\/code> table stores the flagship products:<\/p>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>slow_movings and flagships products<\/summary><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-3\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\"><span class=\"hljs-keyword\">CREATE<\/span> <span class=\"hljs-keyword\">TABLE<\/span> slow_movings (\n    id <span class=\"hljs-type\">INT<\/span> <span class=\"hljs-keyword\">GENERATED<\/span> <span class=\"hljs-keyword\">ALWAYS<\/span> <span class=\"hljs-keyword\">AS<\/span> <span class=\"hljs-keyword\">IDENTITY<\/span> <span class=\"hljs-keyword\">PRIMARY KEY<\/span>,\n    <span class=\"hljs-type\">name<\/span> <span class=\"hljs-type\">VARCHAR<\/span>(<span class=\"hljs-number\">255<\/span>) <span class=\"hljs-keyword\">NOT<\/span> <span class=\"hljs-keyword\">NULL<\/span>,\n    brand <span class=\"hljs-type\">VARCHAR<\/span>(<span class=\"hljs-number\">50<\/span>) <span class=\"hljs-keyword\">NOT<\/span> <span class=\"hljs-keyword\">NULL<\/span>\n);\n\n<span class=\"hljs-keyword\">CREATE<\/span> <span class=\"hljs-keyword\">TABLE<\/span> flagships(\n    id <span class=\"hljs-type\">INT<\/span> <span class=\"hljs-keyword\">GENERATED<\/span> <span class=\"hljs-keyword\">ALWAYS<\/span> <span class=\"hljs-keyword\">AS<\/span> <span class=\"hljs-keyword\">IDENTITY<\/span> <span class=\"hljs-keyword\">PRIMARY KEY<\/span>,\n    <span class=\"hljs-type\">name<\/span> <span class=\"hljs-type\">VARCHAR<\/span>(<span class=\"hljs-number\">255<\/span>) <span class=\"hljs-keyword\">NOT<\/span> <span class=\"hljs-keyword\">NULL<\/span>,\n    brand <span class=\"hljs-type\">VARCHAR<\/span>(<span class=\"hljs-number\">50<\/span>) <span class=\"hljs-keyword\">NOT<\/span> <span class=\"hljs-keyword\">NULL<\/span>\n);\n\n<span class=\"hljs-keyword\">INSERT<\/span> <span class=\"hljs-keyword\">INTO<\/span> slow_movings (<span class=\"hljs-type\">name<\/span>, brand) \n<span class=\"hljs-keyword\">VALUES<\/span>\n(<span class=\"hljs-string\">'iPhone 16'<\/span>, <span class=\"hljs-string\">'Apple'<\/span>),\n(<span class=\"hljs-string\">'Galaxy S24'<\/span>, <span class=\"hljs-string\">'Samsung'<\/span>),\n(<span class=\"hljs-string\">'Pixel 9'<\/span>, <span class=\"hljs-string\">'Google'<\/span>),\n(<span class=\"hljs-string\">'iPhone 16 Plus'<\/span>,<span class=\"hljs-string\">'Apple'<\/span>),\n(<span class=\"hljs-string\">'Galaxy Z Flip 6'<\/span>, <span class=\"hljs-string\">'Samsung'<\/span>);\n\n<span class=\"hljs-keyword\">INSERT<\/span> <span class=\"hljs-keyword\">INTO<\/span> flagships (<span class=\"hljs-type\">name<\/span>, brand) \n<span class=\"hljs-keyword\">VALUES<\/span>\n(<span class=\"hljs-string\">'iPhone 16'<\/span>, <span class=\"hljs-string\">'Apple'<\/span>),\n(<span class=\"hljs-string\">'Galaxy S24'<\/span>,<span class=\"hljs-string\">'Samsung'<\/span>),\n(<span class=\"hljs-string\">'Pixel 9'<\/span>,<span class=\"hljs-string\">'Google'<\/span>),\n(<span class=\"hljs-string\">'iPhone 16 Pro'<\/span>, <span class=\"hljs-string\">'Apple'<\/span>),\n(<span class=\"hljs-string\">'Galaxy S24 Ultra'<\/span>,<span class=\"hljs-string\">'Samsung'<\/span>);<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-3\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PostgreSQL SQL dialect and PL\/pgSQL<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">pgsql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/details>\n\n\n\n<h2 class=\"wp-block-heading\" id='postgresql-intersect-operator-example'>PostgreSQL INTERSECT operator example <a href=\"#postgresql-intersect-operator-example\" class=\"anchor\" id=\"postgresql-intersect-operator-example\" title=\"Anchor for PostgreSQL INTERSECT operator example\">#<\/a><\/h2>\n\n\n\n<p>The following statement uses the <code>INTERSECT<\/code> operator to find the slow-moving flagship products:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-4\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\"><span class=\"hljs-keyword\">SELECT<\/span>\n  <span class=\"hljs-type\">name<\/span>\n<span class=\"hljs-keyword\">FROM<\/span>\n  flagships\n<span class=\"hljs-keyword\">INTERSECT<\/span>\n<span class=\"hljs-keyword\">SELECT<\/span>\n  <span class=\"hljs-type\">name<\/span>\n<span class=\"hljs-keyword\">FROM<\/span>\n  slow_movings;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-4\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PostgreSQL SQL dialect and PL\/pgSQL<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">pgsql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p><a href=\"https:\/\/www.pgtutorial.com\/playground\/?db=sets&amp;q=U0VMRUNUIG5hbWUgRlJPTSBmbGFnc2hpcHMgSU5URVJTRUNUIFNFTEVDVCBuYW1lIEZST00gc2xvd19tb3ZpbmdzOw\">Try it<\/a><\/p>\n\n\n\n<p>Output:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-5\" data-shcb-language-name=\"plaintext\" data-shcb-language-slug=\"plaintext\"><span><code class=\"hljs language-plaintext\">    name\n------------\n Pixel 9\n Galaxy S24\n iPhone 16<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-5\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">plaintext<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">plaintext<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h2 class=\"wp-block-heading\" id='postgresql-intersect-operator-with-the-order-by-clause'>PostgreSQL INTERSECT operator with the ORDER BY clause <a href=\"#postgresql-intersect-operator-with-the-order-by-clause\" class=\"anchor\" id=\"postgresql-intersect-operator-with-the-order-by-clause\" title=\"Anchor for PostgreSQL INTERSECT operator with the ORDER BY clause\">#<\/a><\/h2>\n\n\n\n<p>To <a href=\"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-order-by\/\">sort the result set<\/a> of a query that involves the <code>INTERSECT<\/code> operator, you place the <code><a href=\"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-order-by\/\">ORDER BY<\/a><\/code> clause in the last query:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-6\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\"><span class=\"hljs-keyword\">SELECT<\/span>\n  column1,\n  column2\n<span class=\"hljs-keyword\">FROM<\/span>\n  table1\n<span class=\"hljs-keyword\">INTERSECT<\/span>\n<span class=\"hljs-keyword\">SELECT<\/span>\n  column1,\n  column2\n<span class=\"hljs-keyword\">FROM<\/span>\n  table2\n<span class=\"hljs-keyword\">ORDER<\/span> <span class=\"hljs-keyword\">BY<\/span>\n  sort_expression;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-6\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PostgreSQL SQL dialect and PL\/pgSQL<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">pgsql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>For example, the following statement uses the <code>INTERSECT ALL<\/code> operator to find the slow-moving flagship products and sort them by name:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-7\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\"><span class=\"hljs-keyword\">SELECT<\/span>\n  <span class=\"hljs-type\">name<\/span>\n<span class=\"hljs-keyword\">FROM<\/span>\n  flagships\n<span class=\"hljs-keyword\">INTERSECT<\/span>\n<span class=\"hljs-keyword\">SELECT<\/span>\n  <span class=\"hljs-type\">name<\/span>\n<span class=\"hljs-keyword\">FROM<\/span>\n  slow_movings\n<span class=\"hljs-keyword\">ORDER<\/span> <span class=\"hljs-keyword\">BY<\/span> <span class=\"hljs-type\">name<\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-7\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PostgreSQL SQL dialect and PL\/pgSQL<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">pgsql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p><a href=\"https:\/\/www.pgtutorial.com\/playground\/?db=sets&amp;q=U0VMRUNUIG5hbWUgRlJPTSBmbGFnc2hpcHMgSU5URVJTRUNUIFNFTEVDVCBuYW1lIEZST00gc2xvd19tb3ZpbmdzIE9SREVSIEJZIG5hbWU7\" target=\"_blank\" rel=\"noreferrer noopener\">Try it<\/a><\/p>\n\n\n\n<p>Output:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-8\" data-shcb-language-name=\"plaintext\" data-shcb-language-slug=\"plaintext\"><span><code class=\"hljs language-plaintext\">    name\n------------\n Galaxy S24\n iPhone 16\n Pixel 9<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-8\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">plaintext<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">plaintext<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h2 class=\"wp-block-heading\" id='postgresql-intersect-all-operator-example'>PostgreSQL INTERSECT ALL operator example <a href=\"#postgresql-intersect-all-operator-example\" class=\"anchor\" id=\"postgresql-intersect-all-operator-example\" title=\"Anchor for PostgreSQL INTERSECT ALL operator example\">#<\/a><\/h2>\n\n\n\n<p>The following statement uses the <code>INTERSECT<\/code>operator to find the brands of slow-moving flagship products:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-9\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\"><span class=\"hljs-keyword\">SELECT<\/span>\n  brand\n<span class=\"hljs-keyword\">FROM<\/span>\n  flagships\n<span class=\"hljs-keyword\">INTERSECT<\/span>\n<span class=\"hljs-keyword\">SELECT<\/span>\n  brand\n<span class=\"hljs-keyword\">FROM<\/span>\n  slow_movings\n<span class=\"hljs-keyword\">ORDER<\/span> <span class=\"hljs-keyword\">BY<\/span> brand;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-9\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PostgreSQL SQL dialect and PL\/pgSQL<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">pgsql<\/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-10\" data-shcb-language-name=\"plaintext\" data-shcb-language-slug=\"plaintext\"><span><code class=\"hljs language-plaintext\">  brand\n---------\n Apple\n Google\n Samsung<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-10\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">plaintext<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">plaintext<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>It returns three distinct brands. <\/p>\n\n\n\n<p>To find all the brands including duplicate ones, you can use the <code>INTERSECT ALL<\/code> operator:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-11\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\"><span class=\"hljs-keyword\">SELECT<\/span>\n  brand\n<span class=\"hljs-keyword\">FROM<\/span>\n  flagships\n<span class=\"hljs-keyword\">INTERSECT<\/span> <span class=\"hljs-keyword\">ALL<\/span>\n<span class=\"hljs-keyword\">SELECT<\/span>\n  brand\n<span class=\"hljs-keyword\">FROM<\/span>\n  slow_movings\n<span class=\"hljs-keyword\">ORDER<\/span> <span class=\"hljs-keyword\">BY<\/span> brand;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-11\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PostgreSQL SQL dialect and PL\/pgSQL<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">pgsql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p><a href=\"https:\/\/www.pgtutorial.com\/playground\/?db=sets&amp;q=U0VMRUNUIGJyYW5kIEZST00gZmxhZ3NoaXBzIElOVEVSU0VDVCBBTEwgU0VMRUNUIGJyYW5kIEZST00gc2xvd19tb3ZpbmdzIE9SREVSIEJZIGJyYW5kOw\" target=\"_blank\" rel=\"noreferrer noopener\">Try it<\/a><\/p>\n\n\n\n<p>Output:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-12\" data-shcb-language-name=\"plaintext\" data-shcb-language-slug=\"plaintext\"><span><code class=\"hljs language-plaintext\">  brand\n---------\n Apple\n Apple\n Google\n Samsung\n Samsung<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-12\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">plaintext<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">plaintext<\/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 PostgreSQL <code>INTERSECT<\/code> operator to return the intersection of two result sets.<\/li>\n\n\n\n<li>Use the <code>INTERSECT ALL<\/code> operator  to include the duplicate records.<\/li>\n\n\n\n<li>Place the <code>ORDER BY<\/code> clause in the last query to sort the final result set returned by the <code>INTERSECT<\/code> operator.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id='quiz'>Quiz <a href=\"#quiz\" class=\"anchor\" id=\"quiz\" title=\"Anchor for Quiz\">#<\/a><\/h2>\n\n\n\n<iframe loading=\"lazy\"\n  name=\"quiz\"\n  src=\"\/quiz\/?quiz=intersect\"\n  height=\"700\"\n  width=\"600\"\n  class=\"iframe\"\n><\/iframe>\n\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=\"485\"\n\t\t\t\tdata-post-url=\"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-intersect\/\"\n\t\t\t\tdata-post-title=\"PostgreSQL INTERSECT Operator\"\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 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