How to escape single quote in SQL Server?

Today, when I was trying to insert a value to a table in SQL Server which had single quotes, I ended by getting the following error.

Unclosed quotation mark after the character string

The query looked like this

INSERT INTO COUNTRIES (NAME) VALUES (‘Test’s’)

How to escape a single quote in SQL Server?

To fix the above error, we can escape the single quotes by doubling or inserting two single quotes as shown in the below query

INSERT INTO COUNTRIES (NAME) VALUES (‘Test”s’)