On Tue, Dec 4, 2012 at 5:57 AM, Edson Richter <edsonrichter@xxxxxxxxxxx> wrote: > In this specific case, the full length (14) is mandatory... so seems there > is no loss or gain. > Also, I see all varchar(...) created are by default "storage = EXTENDED" > (from "Pg Admin"), while other datatypes (like numeric, smallint, integer) > are "storage = MAIN". > Can I have a gain using fixed length datatype in place of current varchar > (like "numeric (14,0)")? > Or changing to "char(14) check length(doc)=14" and "storage=MAIN"? May be I am late with my reply but I would also recommend to take into consideration the article from depesz where he explains and tests all the textual types http://www.depesz.com/2010/03/02/charx-vs-varcharx-vs-varchar-vs-text/. Very useful one. -- Sergey Konoplev Database and Software Architect http://www.linkedin.com/in/grayhemp Phones: USA +1 415 867 9984 Russia, Moscow +7 901 903 0499 Russia, Krasnodar +7 988 888 1979 Skype: gray-hemp Jabber: gray.ru@xxxxxxxxx -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
