In some databases, such as PostgreSQL, there is no difference between varchar(), varchar(N) and text. http://www.depesz.com/2010/03/02/charx-vs-varcharx-vs-var

In some databases, such as PostgreSQL, there is no difference between varchar(), varchar(N) and text. http://www.depesz.com/2010/03/02/charx-vs-varcharx-vs-varchar-vs-text/ http://www.depesz.com/2010/03/02/charx-vs-varcharx-vs-varcha... And 7.8 MB really change practically nothing in the overall equation. 1 is a good point but badly argumented.