{"id":1191,"date":"2024-12-22T19:20:10","date_gmt":"2024-12-22T12:20:10","guid":{"rendered":"https:\/\/www.pgtutorial.com\/?page_id=1191"},"modified":"2025-01-03T14:31:46","modified_gmt":"2025-01-03T07:31:46","slug":"postgresql-like","status":"publish","type":"page","link":"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-like\/","title":{"rendered":"PostgreSQL LIKE Operator"},"content":{"rendered":"\n<p><strong>Summary<\/strong>: in this tutorial, you&#8217;ll learn how to use the PostgreSQL <code>LIKE<\/code> operator to search for a specified pattern in a column.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='getting-started-with-the-postgresql-like-operator'>Getting Started with the PostgreSQL LIKE operator <a href=\"#getting-started-with-the-postgresql-like-operator\" class=\"anchor\" id=\"getting-started-with-the-postgresql-like-operator\" title=\"Anchor for Getting Started with the PostgreSQL LIKE operator\">#<\/a><\/h2>\n\n\n\n<p>The PostgreSQL <code>LIKE<\/code> operator allows you to search for a specified pattern in a column. You can use the <code>LIKE<\/code> operator in a <code><a href=\"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-where\/\">WHERE<\/a><\/code> clause to filter rows based on a pattern.<\/p>\n\n\n\n<p>Here\u2019s the syntax for the <code>LIKE<\/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>\n  column1, column2\n<span class=\"hljs-keyword\">FROM<\/span>\n  <span class=\"hljs-built_in\">table_name<\/span>\n<span class=\"hljs-keyword\">WHERE<\/span>\n  column1 <span class=\"hljs-keyword\">LIKE<\/span> pattern;<\/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<h3 class=\"wp-block-heading\" id='wildcard-characters'>Wildcard Characters <a href=\"#wildcard-characters\" class=\"anchor\" id=\"wildcard-characters\" title=\"Anchor for Wildcard Characters\">#<\/a><\/h3>\n\n\n\n<p>Typically, you use the following wildcard characters to construct a pattern:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>%<\/code> represents any zero or more characters.<\/li>\n\n\n\n<li><code>_<\/code> represents any single character.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id='postgresql-like-operator-examples'>PostgreSQL LIKE Operator Examples <a href=\"#postgresql-like-operator-examples\" class=\"anchor\" id=\"postgresql-like-operator-examples\" title=\"Anchor for PostgreSQL LIKE Operator Examples\">#<\/a><\/h2>\n\n\n\n<p>Let&#8217;s explore examples of using the <code>LIKE<\/code> operator with the <code>products<\/code> table:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"159\" height=\"254\" src=\"https:\/\/www.pgtutorial.com\/wp-content\/uploads\/2024\/12\/products.png\" alt=\"PostgreSQL LIKE operator\" class=\"wp-image-1051\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id='finding-products-with-names-starting-with-samsung'>Finding Products with Names Starting with &#8220;Samsung&#8221; <a href=\"#finding-products-with-names-starting-with-samsung\" class=\"anchor\" id=\"finding-products-with-names-starting-with-samsung\" title=\"Anchor for Finding Products with Names Starting with &quot;Samsung&quot;\">#<\/a><\/h3>\n\n\n\n<p>The following query uses the <code>LIKE<\/code> operator to find the products whose names start with <code>\"Samsung\"<\/code>:<\/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>\n  product_name,\n  price\n<span class=\"hljs-keyword\">FROM<\/span>\n  products\n<span class=\"hljs-keyword\">WHERE<\/span>\n  product_name <span class=\"hljs-keyword\">LIKE<\/span> <span class=\"hljs-string\">'Samsung%'<\/span>;<\/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<p><a href=\"https:\/\/www.pgtutorial.com\/playground\/?q=U0VMRUNUIHByb2R1Y3RfbmFtZSwgcHJpY2UgRlJPTSBwcm9kdWN0cyBXSEVSRSBwcm9kdWN0X25hbWUgTElLRSAnU2Ftc3VuZyUnOw%3D%3D\" 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-3\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\">       product_name        |  price\n<span class=\"hljs-comment\">---------------------------+---------<\/span>\n Samsung Galaxy S24        |  <span class=\"hljs-number\">999.99<\/span>\n Samsung Galaxy Z Fold <span class=\"hljs-number\">5<\/span>   | <span class=\"hljs-number\">1799.99<\/span>\n Samsung Galaxy Tab S9     |  <span class=\"hljs-number\">699.99<\/span>\n Samsung Galaxy Buds Pro <span class=\"hljs-number\">2<\/span> |  <span class=\"hljs-number\">199.99<\/span>\n Samsung Galaxy Watch <span class=\"hljs-number\">6<\/span>    |  <span class=\"hljs-number\">349.99<\/span>\n Samsung QN900C Neo QLED   | <span class=\"hljs-number\">2999.99<\/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>\n\n\n<p>The pattern &#8220;Samsung%&#8221; match products whose names start with the word <code>\"Samsung\"<\/code> .<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id='finding-products-with-names-ending-with-5'>Finding Products with Names Ending with &#8220;5&#8221; <a href=\"#finding-products-with-names-ending-with-5\" class=\"anchor\" id=\"finding-products-with-names-ending-with-5\" title=\"Anchor for Finding Products with Names Ending with &quot;5&quot;\">#<\/a><\/h3>\n\n\n\n<p>The following statement uses the <code>LIKE<\/code> operator to find the products whose names end with the string <code>\"5\"<\/code>:<\/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  product_name,\n  price\n<span class=\"hljs-keyword\">FROM<\/span>\n  products\n<span class=\"hljs-keyword\">WHERE<\/span>\n  product_name <span class=\"hljs-keyword\">LIKE<\/span> <span class=\"hljs-string\">'%5'<\/span>;<\/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\/?q=U0VMRUNUIHByb2R1Y3RfbmFtZSwgcHJpY2UgRlJPTSBwcm9kdWN0cyBXSEVSRSBwcm9kdWN0X25hbWUgTElLRSAnJTUnOw%3D%3D\" 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-5\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\">        product_name        |  price\n<span class=\"hljs-comment\">----------------------------+---------<\/span>\n Apple iPhone <span class=\"hljs-number\">15<\/span>            | <span class=\"hljs-number\">1099.99<\/span>\n Samsung Galaxy Z Fold <span class=\"hljs-number\">5<\/span>    | <span class=\"hljs-number\">1799.99<\/span>\n Dell XPS <span class=\"hljs-number\">15<\/span>                | <span class=\"hljs-number\">1499.99<\/span>\n Microsoft Surface Laptop <span class=\"hljs-number\">5<\/span> | <span class=\"hljs-number\">1299.99<\/span><\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-5\"><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<h3 class=\"wp-block-heading\" id='finding-products-with-pro-anywhere-in-the-name'>Finding Products with &#8220;Pro&#8221; Anywhere in the Name <a href=\"#finding-products-with-pro-anywhere-in-the-name\" class=\"anchor\" id=\"finding-products-with-pro-anywhere-in-the-name\" title=\"Anchor for Finding Products with &quot;Pro&quot; Anywhere in the Name\">#<\/a><\/h3>\n\n\n\n<p>The following query uses the <code>LIKE<\/code> operator to find all products with names containing the word <code>\"Pro\"<\/code>:<\/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  product_name,\n  price\n<span class=\"hljs-keyword\">FROM<\/span>\n  products\n<span class=\"hljs-keyword\">WHERE<\/span>\n  product_name <span class=\"hljs-keyword\">LIKE<\/span> <span class=\"hljs-string\">'%Pro%'<\/span>;<\/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><a href=\"https:\/\/www.pgtutorial.com\/playground\/?q=U0VMRUNUIHByb2R1Y3RfbmFtZSwgcHJpY2UgRlJPTSBwcm9kdWN0cyBXSEVSRSBwcm9kdWN0X25hbWUgTElLRSAnJVBybyUnOw%3D%3D\" 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-7\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\">       product_name        |  price\n<span class=\"hljs-comment\">---------------------------+---------<\/span>\n Apple iPhone <span class=\"hljs-number\">15<\/span> Pro Max   | <span class=\"hljs-number\">1299.99<\/span>\n Apple iPad Pro <span class=\"hljs-number\">12.9<\/span>       | <span class=\"hljs-number\">1099.99<\/span>\n Apple AirPods Pro <span class=\"hljs-number\">3<\/span>       |  <span class=\"hljs-number\">249.99<\/span>\n Samsung Galaxy Buds Pro <span class=\"hljs-number\">2<\/span> |  <span class=\"hljs-number\">199.99<\/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<h3 class=\"wp-block-heading\" id='finding-products-with-names-containing-exactly-10-characters'>Finding Products with Names Containing Exactly 10 Characters <a href=\"#finding-products-with-names-containing-exactly-10-characters\" class=\"anchor\" id=\"finding-products-with-names-containing-exactly-10-characters\" title=\"Anchor for Finding Products with Names Containing Exactly 10 Characters\">#<\/a><\/h3>\n\n\n\n<p>The following <code>SELECT<\/code> statement uses the <code>LIKE<\/code> operator to find the products with the name containing exactly 10 characters:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-8\" 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  product_name,\n  price\n<span class=\"hljs-keyword\">FROM<\/span>\n  products\n<span class=\"hljs-keyword\">WHERE<\/span>\n  product_name <span class=\"hljs-keyword\">LIKE<\/span> <span class=\"hljs-string\">'__________'<\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-8\"><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\/?q=U0VMRUNUIHByb2R1Y3RfbmFtZSwgcHJpY2UgRlJPTSBwcm9kdWN0cyBXSEVSRSBwcm9kdWN0X25hbWUgTElLRSAnX19fX19fX19fXyc7\" 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-9\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\"> product_name |  price\n<span class=\"hljs-comment\">--------------+---------<\/span>\n LG G3 OLED   | <span class=\"hljs-number\">2499.99<\/span><\/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>In this example, each underscore <code>_<\/code> represents a single character.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='using-ilike-operator-for-case-insensitive-search'>Using ILIKE Operator for Case-Insensitive Search <a href=\"#using-ilike-operator-for-case-insensitive-search\" class=\"anchor\" id=\"using-ilike-operator-for-case-insensitive-search\" title=\"Anchor for Using ILIKE Operator for Case-Insensitive Search\">#<\/a><\/h2>\n\n\n\n<p>PostgreSQL offers the <code>ILIKE<\/code> operator, which is similar to <code>LIKE<\/code> but matches a pattern case-insensitively.<\/p>\n\n\n\n<p>For example, the following statement uses the <code>ILIKE<\/code> operator to find all products with names having the letter <code>\"B\"<\/code> or <code>\"b\"<\/code>:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-10\" 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  product_name,\n  price\n<span class=\"hljs-keyword\">FROM<\/span>\n  products\n<span class=\"hljs-keyword\">WHERE<\/span>\n  product_name <span class=\"hljs-keyword\">ILIKE<\/span> <span class=\"hljs-string\">'%b%'<\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-10\"><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\/?q=U0VMRUNUIHByb2R1Y3RfbmFtZSwgcHJpY2UgRlJPTSBwcm9kdWN0cyBXSEVSRSBwcm9kdWN0X25hbWUgSUxJS0UgJyViJSc7\" 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-11\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\">       product_name        |  price\n<span class=\"hljs-comment\">---------------------------+---------<\/span>\n Samsung Galaxy Tab S9     |  <span class=\"hljs-number\">699.99<\/span>\n Samsung Galaxy Buds Pro <span class=\"hljs-number\">2<\/span> |  <span class=\"hljs-number\">199.99<\/span>\n Sony Bravia XR A95K       | <span class=\"hljs-number\">2499.99<\/span>\n Sony HT-A7000 Soundbar    | <span class=\"hljs-number\">1299.99<\/span>\n Bose SoundLink Max        |  <span class=\"hljs-number\">399.99<\/span>\n Lenovo ThinkPad X1 Carbon | <span class=\"hljs-number\">1599.99<\/span><\/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<h2 class=\"wp-block-heading\" id='negating-the-like-operator-with-the-not-operator'>Negating the LIKE Operator with the NOT Operator <a href=\"#negating-the-like-operator-with-the-not-operator\" class=\"anchor\" id=\"negating-the-like-operator-with-the-not-operator\" title=\"Anchor for Negating the LIKE Operator with the NOT Operator\">#<\/a><\/h2>\n\n\n\n<p>The <code>NOT<\/code> operator negates the result of the <code>LIKE<\/code> and <code>ILIKE<\/code> operators:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-12\" 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> select_list\n<span class=\"hljs-keyword\">FROM<\/span> <span class=\"hljs-built_in\">table_name<\/span>\n<span class=\"hljs-keyword\">WHERE<\/span> column1 <span class=\"hljs-keyword\">NOT<\/span> <span class=\"hljs-keyword\">LIKE<\/span> pattern;\n\n<span class=\"hljs-keyword\">SELECT<\/span> select_list\n<span class=\"hljs-keyword\">FROM<\/span> <span class=\"hljs-built_in\">table_name<\/span>\n<span class=\"hljs-keyword\">WHERE<\/span> column1 <span class=\"hljs-keyword\">NOT<\/span> <span class=\"hljs-keyword\">ILIKE<\/span> pattern;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-12\"><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>NOT LIKE<\/code> operator to find products whose names do not contain the letter <code>'a'<\/code> or <code>'A'<\/code>:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-13\" 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  product_name\n<span class=\"hljs-keyword\">FROM<\/span>\n  products\n<span class=\"hljs-keyword\">WHERE<\/span>\n  product_name <span class=\"hljs-keyword\">NOT<\/span> <span class=\"hljs-keyword\">ILIKE<\/span> <span class=\"hljs-string\">'%a%'<\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-13\"><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\/?q=U0VMRUNUIHByb2R1Y3RfbmFtZSBGUk9NIHByb2R1Y3RzIFdIRVJFIHByb2R1Y3RfbmFtZSBOT1QgSUxJS0UgJyVhJSc7\" 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-14\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\">   product_name\n<span class=\"hljs-comment\">------------------<\/span>\n LG OLED TV C3\n LG G3 OLED\n Dell XPS <span class=\"hljs-number\">15<\/span>\n HP Spectre x360\n Dell Inspiron <span class=\"hljs-number\">27<\/span><\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-14\"><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<h2 class=\"wp-block-heading\" id='operators'>Operators <a href=\"#operators\" class=\"anchor\" id=\"operators\" title=\"Anchor for Operators\">#<\/a><\/h2>\n\n\n\n<p>PostgreSQL provides some operators that replicate the functionality of <code>LIKE<\/code>, <code>NOT LIKE<\/code>, <code>ILIKE<\/code>, and <code>NOT ILIKE<\/code> operators.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Operator<\/th><th>Meaning<\/th><\/tr><\/thead><tbody><tr><td><code>~~<\/code><\/td><td><code>LIKE<\/code><\/td><\/tr><tr><td><code>~~*<\/code><\/td><td><code>ILIKE<\/code><\/td><\/tr><tr><td><code>!~~<\/code><\/td><td><code>NOT LIKE<\/code><\/td><\/tr><tr><td><code>!~~*<\/code><\/td><td><code>NOT ILIKE<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>For example:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-15\" 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  product_name\n<span class=\"hljs-keyword\">FROM<\/span>\n  products\n<span class=\"hljs-keyword\">WHERE<\/span>\n  product_name ~~ <span class=\"hljs-string\">'%3%'<\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-15\"><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\/?q=U0VMRUNUIHByb2R1Y3RfbmFtZSBGUk9NIHByb2R1Y3RzIFdIRVJFIHByb2R1Y3RfbmFtZSB%2BfiAnJTMlJzs%3D\" 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-16\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\">    product_name\n<span class=\"hljs-comment\">---------------------<\/span>\n Apple AirPods Pro <span class=\"hljs-number\">3<\/span>\n LG OLED TV C3\n LG G3 OLED\n HP Spectre x360<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-16\"><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<h2 class=\"wp-block-heading\" id='escape-characters'>Escape Characters <a href=\"#escape-characters\" class=\"anchor\" id=\"escape-characters\" title=\"Anchor for Escape Characters\">#<\/a><\/h2>\n\n\n\n<p>The string you want to find may contain the wildcard characters <code>%<\/code> and <code>_<\/code> such as <code>100%<\/code> . <\/p>\n\n\n\n<p>To treat the wildcard characters as regular characters, you can use the <code>ESCAPE<\/code> option in the <code>LIKE<\/code> and <code>ILIKE<\/code> operators:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-17\" 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  <span class=\"hljs-built_in\">table_name<\/span>\n<span class=\"hljs-keyword\">WHERE<\/span>\n  column1 <span class=\"hljs-keyword\">LIKE<\/span> pattern <span class=\"hljs-keyword\">ESCAPE<\/span> escape_character;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-17\"><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>LIKE<\/code> operator to find products with a description that contains the word <code>\"100%\"<\/code>:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-18\" 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  product_name,\n  description\n<span class=\"hljs-keyword\">FROM<\/span>\n  products\n<span class=\"hljs-keyword\">WHERE<\/span>\n  description <span class=\"hljs-keyword\">LIKE<\/span> <span class=\"hljs-string\">'%100$%%'<\/span> <span class=\"hljs-keyword\">ESCAPE<\/span> <span class=\"hljs-string\">'$'<\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-18\"><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\/?q=U0VMRUNUIHByb2R1Y3RfbmFtZSwgZGVzY3JpcHRpb24gRlJPTSBwcm9kdWN0cyBXSEVSRSBkZXNjcmlwdGlvbiBMSUtFICclMTAwJCUlJyBFU0NBUEUgJyQnOw%3D%3D\" target=\"_blank\" rel=\"noreferrer noopener\">Try it<\/a><\/p>\n\n\n\n<p>(please see the output in the playground)<\/p>\n\n\n\n<p>In this example, we use the <code>$<\/code> character as an escape character. We specify the escape character <code>$<\/code> before <code>%<\/code> so the <code>LIKE<\/code> operator treats the character <code>%<\/code> that immediately follows <code>100<\/code> as a regular character.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='using-like-with-case-expression'>Using LIKE with CASE expression <a href=\"#using-like-with-case-expression\" class=\"anchor\" id=\"using-like-with-case-expression\" title=\"Anchor for Using LIKE with CASE expression\">#<\/a><\/h2>\n\n\n\n<p>The following shows how to use the <code>LIKE<\/code> operator in the <code><a href=\"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-case\/\">CASE<\/a><\/code> expression to retrieve the <code>iPhone<\/code> and <code>Galaxy<\/code> groups from the <code>products<\/code> table:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-19\" 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  product_name,\n  <span class=\"hljs-keyword\">CASE<\/span>\n    <span class=\"hljs-keyword\">WHEN<\/span> product_name <span class=\"hljs-keyword\">LIKE<\/span> <span class=\"hljs-string\">'%iPhone%'<\/span> <span class=\"hljs-keyword\">THEN<\/span> <span class=\"hljs-string\">'iPhone'<\/span>\n    <span class=\"hljs-keyword\">WHEN<\/span> product_name <span class=\"hljs-keyword\">LIKE<\/span> <span class=\"hljs-string\">'%Galaxy%'<\/span> <span class=\"hljs-keyword\">THEN<\/span> <span class=\"hljs-string\">'Galaxy'<\/span>\n  <span class=\"hljs-keyword\">END<\/span> <span class=\"hljs-keyword\">AS<\/span> <span class=\"hljs-keyword\">group<\/span>,\n  price\n<span class=\"hljs-keyword\">FROM<\/span>\n  products\n<span class=\"hljs-keyword\">WHERE<\/span>\n  product_name <span class=\"hljs-keyword\">like<\/span> <span class=\"hljs-string\">'%iPhone%'<\/span>\n  <span class=\"hljs-keyword\">OR<\/span> product_name <span class=\"hljs-keyword\">like<\/span> <span class=\"hljs-string\">'%Galaxy%'<\/span>\n<span class=\"hljs-keyword\">ORDER<\/span> <span class=\"hljs-keyword\">BY<\/span>\n  product_name;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-19\"><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\/?q=U0VMRUNUIHByb2R1Y3RfbmFtZSwgQ0FTRSBXSEVOIHByb2R1Y3RfbmFtZSBMSUtFICclaVBob25lJScgVEhFTiAnaVBob25lJyBXSEVOIHByb2R1Y3RfbmFtZSBMSUtFICclR2FsYXh5JScgVEhFTiAnR2FsYXh5JyBFTkQgQVMgZ3JvdXAsIHByaWNlIEZST00gcHJvZHVjdHMgV0hFUkUgcHJvZHVjdF9uYW1lIGxpa2UgJyVpUGhvbmUlJyBPUiBwcm9kdWN0X25hbWUgbGlrZSAnJUdhbGF4eSUnIE9SREVSIEJZIHByb2R1Y3RfbmFtZTs%3D\" 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-20\" data-shcb-language-name=\"plaintext\" data-shcb-language-slug=\"plaintext\"><span><code class=\"hljs language-plaintext\">       product_name        | group  |  price\n---------------------------+--------+---------\n Apple iPhone 15           | iPhone | 1099.99\n Apple iPhone 15 Pro Max   | iPhone | 1299.99\n Samsung Galaxy Buds Pro 2 | Galaxy |  199.99\n Samsung Galaxy S24        | Galaxy |  999.99\n Samsung Galaxy Tab S9     | Galaxy |  699.99\n Samsung Galaxy Watch 6    | Galaxy |  349.99\n Samsung Galaxy Z Fold 5   | Galaxy | 1799.99<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-20\"><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>In this example:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The <code>WHERE<\/code>filters the rows to include only products with the name containing either <code>\"iPhone\"<\/code> or <code>\"Galaxy\"<\/code>.<\/li>\n\n\n\n<li>The <code>CASE<\/code> expression creates a new column named group based on the value of the <code>product_name<\/code>.<\/li>\n<\/ul>\n\n\n\n<p>If the product name contains the word <code>\"iPhone\"<\/code> or <code>\"Galaxy\"<\/code> , the <code>group<\/code> column will have the value <code>\"iPhone\"<\/code> or <code>\"Galaxy\"<\/code> respectively.<\/p>\n\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>LIKE<\/code> operator to match a specified pattern in a column.<\/li>\n\n\n\n<li>Use the <code>%<\/code> wildcard character to represent zero or more characters and the <code>_<\/code> wildcard character to represent a single character.<\/li>\n\n\n\n<li>Use the <code>ILIKE<\/code> operator to match a specified pattern case-insensitively.<\/li>\n\n\n\n<li>Use the <code>NOT<\/code> operator to negate the <code>LIKE<\/code> and <code>ILIKE<\/code> operators.<\/li>\n\n\n\n<li>Use the <code>ESCAPE<\/code> to treat wildcard characters as regular characters.<\/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=like\"\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 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