In the world of relational databases, VARCHAR is one of the most commonly used string data types, primarily used for storing variable-length character data. However, for many beginners, the ...

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.

Another one of these choices... to go with a char or varchar for a field. Not really an issue with space since we are only looking at a couple of thousand records or so but just wondering what the ...

18 July, 2012. It was a Wednesday. Doing a deployment last night, I ran into an issue around indexing performance around SQL columns of type varchar. Varchar is the ANSI version of character data – ...

Have a table (SQL Server 2008) that the user wants to record a fixed 8 character string in. At first glance, a CHAR seems the obvious selection since this value (an 8 character ID, two alpha ...

Currently, there's a danger producing sql scripts with inserts of text into varchar columns simply replaced in the script. A solution is to encode user input strings as hex, and then use sql functions ...