Nchar - TSQL Tutorial
On Transact SQL language the nchar is part of unicode character strings data types and have fixed length. The string length must be a value from 1 through 4,000.
nchar [ ( n ) ]
CREATE TABLE myNcharTable ( a nchar(20) );
INSERT INTO myNcharTable VALUES ('This is an example');
SELECT a FROM myNcharTable;
|This is an example|