How do I replace a substring of a string before a specific character?

Question

Table Email:

Values:

josh@yahoo.com
carmine32@hotmail.com
zehmaneh@yahoo.com

I want to replace the string before

Answer 1

You don't even need to use substring or replace, you can use this:

SELECT 'test' + RIGHT(email, charindex('@', REVERSE(email)))
FROM YourTable

You can test it out with this:

DECLARE @email nvarchar(50)
SET @email = 'carmine32@hotmail.com'
PRINT 'test' + RIGHT(@email, charindex('@', REVERSE(@email)))