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STUFF() function inserts Replacement_expression, at the start position specified, along with removing the charactes specified using Length parameter.

Syntax:

STUFF(Original_Expression, Start, Length, Replacement_expression)

Code:

Select FirstName, LastName, STUFF(Email, 2, 3, '*****') as Email
From TableEmployee

prerequisite Code

CREATE TABLE TableEmployee(
FirstName varchar(50),
LastName varchar(50),
Email varchar(50)
)

INSERT INTO TableEmployee VALUES('Rambo', 'Azmi', 'Rambo@aaa.com')
INSERT INTO TableEmployee VALUES('Azam', 'Ali', 'Azam@aaa.com')
INSERT INTO TableEmployee VALUES('Inza', 'Hoque', 'Rambo@aaa.com')
INSERT INTO TableEmployee VALUES('Jaman', 'Sk', 'Jaman@aaa.com')
INSERT INTO TableEmployee VALUES('Samser', 'Alam', 'Samser@aaa.com')

SELECT * FROM TableEmployee

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