What is the difference between char, nchar, varchar, and nvarchar in MSSQL?
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nchar and nvarchar can store Unicode characters.
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char and varchar cannot store Unicode characters.
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char and nchar are fixed-length which will reserve storage space for number of characters you specify even if you don't use up all that space.
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varchar and nvarchar are variable-length which will only use up spaces for the characters you store. It will not reserve storage like char or nchar.
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char: fixed-length character data with a maximum length of 8000 characters.
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nchar: fixed-length unicode data with a maximum length of 4000 characters.
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Char = 8 bit length
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NChar = 16 bit length
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Helpful Website Url
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http://stackoverflow.com/questions/176514/what-is-the-difference-between-char-nchar-varchar-and-nvarchar-in-mssql
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