This article explains the difference between varchar and nvarchar datatype in SQL Server.
| nVarchar | Varchar |
| varchar stores UNICODE data. Means it store UNICODE or multilingual data. | Varchar Stores ASCII data |
| UNICODE requires 2 bytes for each character you store. This Means single row of a single nvarchar column can only be nvarchar (4000) Because because of the row size limitations of Sql Server is the same as the page size limit, which is 8060 bytes | ASCII only requires 1 byte for each character. This means a single row of a single varchar column can be varchar(8000) because of the row size limitations of Sql Server is the same as the page size limit, which is 8060 bytes |
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