{"id":930,"date":"2016-07-15T09:50:19","date_gmt":"2016-07-15T09:50:19","guid":{"rendered":"https:\/\/sqltutorial.org\/?page_id=930"},"modified":"2025-02-04T06:18:04","modified_gmt":"2025-02-04T13:18:04","slug":"sql-replace","status":"publish","type":"page","link":"https:\/\/www.sqltutorial.org\/sql-string-functions\/sql-replace\/","title":{"rendered":"SQL REPLACE Function"},"content":{"rendered":"\n<p><strong>Summary<\/strong>: in this tutorial, you will learn how to use the SQL <code>REPLACE<\/code> function to replace all occurrences of a substring within a string with another substring.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='introduction-to-the-sql-replace-function'>Introduction to the SQL REPLACE function <a href=\"#introduction-to-the-sql-replace-function\" class=\"anchor\" id=\"introduction-to-the-sql-replace-function\" title=\"Anchor for Introduction to the SQL REPLACE function\">#<\/a><\/h2>\n\n\n\n<p>In SQL, the <code>REPLACE()<\/code> function to replace all occurrences of a substring within a string with a new substring.<\/p>\n\n\n\n<p>Here&#8217;s the syntax of the <code>REPLACE<\/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\"><span class=\"hljs-keyword\">REPLACE<\/span>(<span class=\"hljs-keyword\">string<\/span>, search_string, replacement_string);<\/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 the <code>REPLACE()<\/code> function takes three parameters:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>string<\/code>: The string in which you want to replace all occurrences of the substrings.<\/li>\n\n\n\n<li><code>search_string<\/code>: The substring you want to replace.<\/li>\n\n\n\n<li><code>replacement_string<\/code>: The new substring you want to replace the <code>search_string<\/code>.<\/li>\n<\/ul>\n\n\n\n<p>The <code>REPLACE<\/code> function returns a new string with all the occurrences of the <code>search_substring<\/code> replaced with the <code>replacement_string<\/code>.<\/p>\n\n\n\n<p>In practice, you&#8217;ll find the <code>REPLACE()<\/code> function is useful in replacing a string in a query or updating data in a table.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='basic-replace-function-example'>Basic REPLACE function example <a href=\"#basic-replace-function-example\" class=\"anchor\" id=\"basic-replace-function-example\" title=\"Anchor for Basic REPLACE function example\">#<\/a><\/h2>\n\n\n\n<p>The following statement uses the <code>REPLACE()<\/code> function to all the occurrences of the word <code>We<\/code> with the word <code>SQL<\/code> :<\/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\">REPLACE<\/span>(<span class=\"hljs-string\">'We Will, We Will Rock You!'<\/span>, <span class=\"hljs-string\">'We'<\/span>, <span class=\"hljs-string\">'SQL'<\/span>) message;<\/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><a href=\"https:\/\/www.sqltutorial.org\/playground\/?q=U0VMRUNUIFJFUExBQ0UoJ1dlIFdpbGwsIFdlIFdpbGwgUm9jayBZb3UhJywgJ1dlJywgJ1NRTCcpIG1lc3NhZ2U7\" target=\"_blank\" rel=\"noreferrer noopener\">Try it<\/a><\/p>\n\n\n\n<p>Output:<\/p>\n\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">           message\n------------------------------\n SQL Will, SQL Will Rock You!<\/code><\/span><\/pre>\n\n\n<p>Note that the <code>REPLACE<\/code> function searches for the substring case-sensitively.<\/p>\n\n\n\n<p>For example, the following statement replaces the word <code>We<\/code> with the word <code>SQL<\/code>. However, it does not replace the word <code>we<\/code> with the word <code>SQL<\/code>:<\/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-keyword\">SELECT<\/span>\n  <span class=\"hljs-keyword\">REPLACE<\/span>(<span class=\"hljs-string\">'We will, we will rock you!'<\/span>, <span class=\"hljs-string\">'We'<\/span>, <span class=\"hljs-string\">'SQL'<\/span>) message;<\/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><a href=\"https:\/\/www.sqltutorial.org\/playground\/?q=U0VMRUNUIFJFUExBQ0UoJ1dlIHdpbGwsIHdlIHdpbGwgcm9jayB5b3UhJywgJ1dlJywgJ1NRTCcpIG1lc3NhZ2U7\" target=\"_blank\" rel=\"noreferrer noopener\">Try it<\/a><\/p>\n\n\n\n<p>Output:<\/p>\n\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">           message\n-----------------------------\n SQL will, we will rock you!<\/code><\/span><\/pre>\n\n\n<p>If the <code>REPLACE<\/code> the function does not find the substring; it does nothing and returns the original string.<\/p>\n\n\n\n<p>For example, the following statement returns the original string because the input string does not contain the word <code>WE<\/code>:<\/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\">REPLACE<\/span>(<span class=\"hljs-string\">'We will, We will rock you!'<\/span>, <span class=\"hljs-string\">'WE'<\/span>, <span class=\"hljs-string\">'SQL'<\/span>) message;<\/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\"><span><code class=\"hljs\">          message\n----------------------------\n We will, We will rock you!<\/code><\/span><\/pre>\n\n\n<h2 class=\"wp-block-heading\" id='using-sql-replace-function-with-the-update-statement'>Using SQL REPLACE function with the UPDATE statement <a href=\"#using-sql-replace-function-with-the-update-statement\" class=\"anchor\" id=\"using-sql-replace-function-with-the-update-statement\" title=\"Anchor for Using SQL REPLACE function with the UPDATE statement\">#<\/a><\/h2>\n\n\n\n<p>We&#8217;ll use the <code>employees<\/code> table in the <a href=\"https:\/\/www.sqltutorial.org\/sql-sample-database\/\">sample database<\/a>:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"169\" height=\"273\" src=\"https:\/\/www.sqltutorial.org\/wp-content\/uploads\/2016\/03\/employees.png\" alt=\"SQL REPLACE Function - employees table\" class=\"wp-image-237\"\/><\/figure>\n\n\n\n<p>The following statement uses the <code>REPLACE()<\/code> function to replace the character <code>.<\/code> in the phone numbers with the character <code>-<\/code> :<\/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-keyword\">SELECT<\/span>\n  first_name,\n  last_name,\n  <span class=\"hljs-keyword\">REPLACE<\/span>(phone_number, <span class=\"hljs-string\">'.'<\/span>, <span class=\"hljs-string\">'-'<\/span>) formatted_phone_number\n<span class=\"hljs-keyword\">FROM<\/span>\n  employees\n<span class=\"hljs-keyword\">ORDER<\/span> <span class=\"hljs-keyword\">BY<\/span>\n  first_name,\n  last_name;<\/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><a href=\"https:\/\/www.sqltutorial.org\/playground\/?q=U0VMRUNUIGZpcnN0X25hbWUsIGxhc3RfbmFtZSwgUkVQTEFDRShwaG9uZV9udW1iZXIsICcuJywgJy0nKSBmb3JtYXR0ZWRfcGhvbmVfbnVtYmVyIEZST00gZW1wbG95ZWVzIE9SREVSIEJZIGZpcnN0X25hbWUsIGxhc3RfbmFtZTs%3D\" target=\"_blank\" rel=\"noreferrer noopener\">Try it<\/a><\/p>\n\n\n\n<p>To replace the character <code>.<\/code> with the character<code> -<\/code> in the <code>phone_number<\/code> column of the <code>employees<\/code> table, you can use the <code>UPDATE<\/code> statement:<\/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\">UPDATE<\/span> employees\n<span class=\"hljs-keyword\">SET<\/span>\n  phone_number = <span class=\"hljs-keyword\">REPLACE<\/span>(phone_number, <span class=\"hljs-string\">'.'<\/span>, <span class=\"hljs-string\">'-'<\/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><a href=\"https:\/\/www.sqltutorial.org\/playground\/?q=VVBEQVRFIGVtcGxveWVlcyBTRVQgcGhvbmVfbnVtYmVyID0gUkVQTEFDRShwaG9uZV9udW1iZXIsICcuJywgJy0nKTs%3D\" target=\"_blank\" rel=\"noreferrer noopener\">Try it<\/a><\/p>\n\n\n\n<p>The following <code>SELECT<\/code> statement retrieves the data from the <code>employees<\/code> table to verify the update:<\/p>\n\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">SELECT\n  first_name,\n  last_name,\n  phone_number\nFROM\n  employees\nORDER BY\n  first_name,\n  last_name;<\/code><\/span><\/pre>\n\n\n<p>Output:<\/p>\n\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\"> first_name  |  last_name  | phone_number\n-------------+-------------+--------------\n Adam        | Fripp       | 650-123-2234\n Alexander   | Hunold      | 590-423-4567\n Alexander   | Khoo        | 515-127-4562\n Britney     | Everett     | 650-501-2876\n Bruce       | Ernst       | 590-423-4568\n...<\/code><\/span><\/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 SQL <code>REPLACE<\/code> function to replace all occurrences of a substring within a string with another substring.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id='databases'>Databases <a href=\"#databases\" class=\"anchor\" id=\"databases\" title=\"Anchor for Databases\">#<\/a><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.pgtutorial.com\/postgresql-string-functions\/postgresql-replace\/\" target=\"_blank\" rel=\"noreferrer noopener\">PostgreSQL REPLACE Function<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.oracletutorial.com\/oracle-string-functions\/oracle-replace\/\" target=\"_blank\" rel=\"noreferrer noopener\">Oracle REPLACE Function<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.sqlservertutorial.net\/sql-server-string-functions\/sql-server-replace-function\/\" target=\"_blank\" rel=\"noreferrer noopener\">SQL Server REPLACE Function<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.sqlitetutorial.net\/sqlite-replace-function\/\" target=\"_blank\" rel=\"noreferrer noopener\">SQLite REPLACE Function<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.db2tutorial.com\/db2-string-functions\/db2-replace\/\" target=\"_blank\" rel=\"noreferrer noopener\">Db2 REPLACE Function<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.mysqltutorial.org\/mysql-string-functions\/mysql-replace-function\/\" target=\"_blank\" rel=\"noreferrer noopener\">MySQL REPLACE function<\/a><\/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 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