update the records

Bhavsing 

Its better to have an identity column or a column with a Primary key.

Identity Column -> In SQL Server, an identity column is a special type of column that is commonly used as the primary key of a table. An identity column is a column whose values are generated automatically by the database system, typically incrementing by 1 for each new row added to the table. The purpose of an identity column is to provide a unique, sequential number for each row in the table.

Example -

CREATE TABLE my_table (
id INT IDENTITY(1,1) PRIMARY KEY,
name VARCHAR(50),
age INT
);

Update Statement -
UPDATE my_table
SET my_column = 'new_value'
WHERE my_column = 'old_value';

You can manually update the same via GUI as well.

Hope it's clear------- If yes, reply and hit like ----- If not reply with your query in more detail----