Difference Between Varchar and Nvarchar

Main Difference

Varchar and nvarchar are info varieties in SQL Server. The predominant between varchar and narchar is that the narchar is used for storing Unicode characters whereas varchar is used for storing Non-Unicode characters. Data storage is 1 byte per character in varchar whereas info storage in nvarchar is 2 bytes per character. In topic definition varchar helps as a lot as 8000 characters whereas nvarchar helps as a lot as 4000 characters.

What is Varchar?

Varchar is an info type of AQL Server pertains to the variable characters. Non-Unicode characters are saved by using varchar. Memory allocation in varchar is in accordance with the inserted characters. In topic definition varchar helps as a lot as 8000 characters.

What is Nvarchar?

Nvarchar is an info type of SQL Server pertains to the variable characters. Unicode characters are saved by using nvarchar. Multiple languages is likely to be saved in info base. If others languages are getting used, nvarchar will take twice space for storing extended set of characters. In filed definition nvarchar helps as a lot as 4000 characters.

Key Differences

  1. Narchar is used for storing Unicode characters whereas varchar don’t retailer Unicode characters.
  2. Varchar is used for storing Non-Unicode characters whereas nvarchar don’t retailer Non-Unicode characters.
  3. Data storage 1 byte per character in varchar whereas in narchar info storage is simply not 1 byte per character.
  4. Data storage in nvarchar is 2 bytes per character whereas in varchar info storage is simply not 2 bytes per character.
  5. In topic definition varchar helps as a lot as 8000 characters whereas nvarchar helps as a lot as 4000 characters.
  6. Memory allocation in varchar is similar as inserted number of characters plus two extra bytes for offset whereas in nvarchar memory allocation is similar as twice of the inserted number of characters plus with extra bytes for offset.
  7. If there could also be Unicode characters to be saved in column or variable then we use varchar whereas on the other aspect if there are Non-Unicode to be saved in column or variable then we use nvarchar.
  8. In the variable declaration or column definition, if the the valve n of the non-compulsory parameter is simply not specified then it is thought-about to be as 1 for varchar and 2 for nvarchar.

Comparison Video

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Harlon Moss

Harlon currently works as a quality moderator and content writer for Difference Wiki. He graduated from the University of California in 2010 with a degree in Computer Science. Follow him on Twitter @HarlonMoss

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