Differences of CHAR and NCHAR in SQL Server Transact-SQL

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Q

What Are the Differences between CHAR and NCHAR in SQL Server Transact-SQL?

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A

Both CHAR and NCHAR are fixed length data types in Transact-SQL. But they have the following main differences:

CHAR stores characters based on the code page with 1 byte per character most of the time.
NCHAR stores characters using Unicode character set with 2 bytes per character most of the time.
CHAR(n) specifies a length of n bytes by default.
NCHAR(n) specifies a length of n characters by default.

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