NULL Values Involved in String Operations in SQL Server

Q

What Happens If NULL Values Are Involved in String Operations in SQL Server Transact-SQL?

✍: FYIcenter.com

A

If NULL values are involved in string operations, the result will be string NULL values. The following tutorial script shows you some good examples:

SELECT 'FyiCenter'+NULL; 
GO
----------
NULL

SELECT LEN(NULL); 
GO
----------
NULL

SELECT REVERSE(NULL); 
GO
----------
NULL

⇒ NULL Values Involved in Datetime Operations in SQL Server

⇐ NULL Values Involved in Arithmetic Operations in SQL Server

⇑ Working with NULL Values in SQL Server Transact-SQL

⇑⇑ SQL Server Transact-SQL Tutorials

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What Are NULL Values in SQL Server
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Working with NULL Values in SQL Server Transact-SQL
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NULL Values Involved in Bitwise Operations in SQL Server
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