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With Postgres appears that TEXT is preferred over varchar(N) http://archives.postgresql.org/pgsql-general/2006-03/msg01522.php Any other DB (e.g. Oracle) would suggest varchar as column only stores the length of the variable (variable character length..) vs any of the fixed length datatype(s) Anyone else? Martin ______________________________________________ Disclaimer and confidentiality note Everything in this e-mail and any attachments relates to the official business of Sender. This transmission is of a confidential nature and Sender does not endorse distribution to any party other than intended recipient. Sender does not necessarily endorse content contained within this transmission. > Date: Wed, 13 Aug 2008 08:45:19 -0400 > From: wmoran@xxxxxxxxxxxxxxxxxxxxxxx > To: jmcferreira@xxxxxxxxxxxxxxxxxx > CC: pgsql-general@xxxxxxxxxxxxxx > Subject: Re: [GENERAL] text .vs. varchar > > In response to Joao Ferreira <jmcferreira@xxxxxxxxxxxxxxxxxx>: > > > Hello all, > > > > I have a big database in which much information is stored in TEXT type > > columns (I did this initially because I did not want to limit the > > maximum size of the string to be stored)... but... > > > > .. let's say I choose an upper limit (p.ex. 200) for the string sizes > > and I start a fresh database with VARCHAR(200). > > > > What tradeoffs can I expect ? disk usage ? query execution times ? > > See the "Tip" on this page, it answers your questions: > http://www.postgresql.org/docs/8.3/static/datatype-character.html > > -- > Bill Moran > Collaborative Fusion Inc. > http://people.collaborativefusion.com/~wmoran/ > > wmoran@xxxxxxxxxxxxxxxxxxxxxxx > Phone: 412-422-3463x4023 > > -- > Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-general Get more from your digital life. Find out how. |
