LKBEN10892: What does the SQL prefix N mean before strings

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LKB | Created: 02-04-2020 | Version: 0 | Language: EN | Rating: 0 | Outdated: False | Marked for deletion: False

Author: Wim Peeters - Keskon GmbH & Co. KG


You have an SQL script with lots of N prefixes




The "N" prefix stands for National Language in the SQL-92 standard, and must be uppercase. All unicode strings must be prefixed with this charachter N when you have to deal with unicode string constants in Microsoft SQL Server. (Transact SQL or TSQL)

select N'Hello, I am a unicode string.';

Hello, I am a unicode string.

About the Author

Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience, including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform.


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