REPLACE Function in SQL Server: Explained

REPLACE Function in SQL Server is easier to understand when the core ideas are paired with practical examples. The sections below explain the topic clearly, highlight useful steps, and point out details that can prevent common errors.

The article will explore and guide you how to use REPLACE function in SQL Server to select and replace strings.

Describe

REPLACE function in SQL Server helps replace all occurrences of substring a to a new substring b in a given string.

Syntax

To use REPLACE function in SQL Server, we use the following syntax:

 REPLACE(chuoi, chuoi_a, chuoi_b)

Parameters :

Chain : the source string in which a small string in it will be replaced by another string.
Type: in the loop , will be replaced by another string after running the function.
chuoi_b: new string replacing chuoi_a. All appearances will be replaced with chuoi_b.

Note :

REPLACE implements a non-case sensitive replacement.
REPLACE can be used in later versions of SQL Server: SQL Server 2017, SQL Server 2016, SQL Server 2014, SQL Server 2012, SQL Server 2008 R2, SQL Server 2008, and SQL Server 2005.

As an example,

Take a look and explore some examples of REPLACE functions in SQL Server.

 SELECT REPLACE('QuaNtrimang.com', 'n', '3'); 
 Result: 'Qua3trima3g.com' (Cả n và N đều được thay thế bằng 3) 
 
 SELECT REPLACE('TipsMake.com', 'quan', '1234'); 
 Result: '1234trimang.com' 
 
 SELECT REPLACE('TipsMake.com', '.com', '1'); 
 Result: 'Tipsmake1' 
 
 SELECT REPLACE('Tipsmake', ' ', '0'); 
 Result: 'Quan0Tri0Mang'

Next lesson: RIGHT function in SQL Server