Query to Replace part of string in sql server | Replace function example

Introduction:

In this article I will explain what is the replace function in SQL Server and how to use Replace() function in SQL Server.

Description:

In previous post I explained article substring function in SQL server. Now I will explain what is Replace () function in SQL server and how to use it in our applications. In one application I got requirement like replace particular part of the string with another value to achieve this functionality I realized it’s better to use Replace () function.

Replace() function

This function is used to replace the all the occurrences of specified string value with another string value. Generally Replace function will take 3 arguments and that declaration will be like this

Replace('string1','string2','string3')

In this function

1^st Argument specifies the string value

2^nd Argument specifies required string to be updated in complete string

3^rd Argument specifies replace required string value in complete string

Examples of Replace() Function:

EX1:

Declaration of replace function will be like this

SELECT REPLACE(' Dasari Suresh', 'Dasari', 'Aspdotnet')

Output: 'Aspdotnet Suresh'

In above query we declared string as 'Dasari Suresh', and declared string to replace 'Dasari' string value with 'Aspdotnet'string value.

Ex2:

Suppose if we want to use Replace() function in table then our function declaration will be like this

SELECT  REPLACE (ColumnName,CompareText,ReplaceText) as ' Replace' FROM TableName

Ex: SELECT REPLACE(UserName,'Dasari', 'Aspdotnet') as 'Replace' FROM UserInformation

Above query will replace UserName which contains 'Dasari' value with 'Aspdotnet' string value like this

Output:      

Replace

Aspdotnet Suresh

Suresh Aspdotnet

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