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Difference between datatype char(n),varchar(n),nchar(n),nvarchar(n) in sql server?

A char datatype takes 1 byte per character. It is a fixed length character datatype i.e even though character entered are less than n,fixed memory size i.e n bytes are allocated to those characters.
GitHub

SQLServer NVARCHAR column query parameter is set as VARCHAR

Expected behavior and actual behavior: I'm researchig jOOQ Professional trial to use in our project with SQLServer 2017. When there is NVARCHAR column and when the column is used as a query parameter, ...
GitHub

SQL Server reports column size of 0 for nvarchar

I can't verify this bug with other databases, but I'm dealing with SQL Server 2014 via R-3.2.5 and RODBC-0.2.5 (haven't updated this one machine since you fixed my last issue, thanks!). When a schema ...
Ars Technica

[SQL] How To Sort A Build Number (i.e. X.X.XXXX.X) Stored As NVARCHAR

I need to query against a column which contains build numbers stored as an NVARCHAR.<BR>Sorting works fine until you get into double-digit versions.<BR><BR>This works ...
Ars Technica

varchar vs nvarchar

I'm working with a <B>very</B> large DB in MS SQL 2000. All char fields are defined as varchar. Now, I am trying to add support for Kanji, in particular, and later Spanish, German, and eventually ...