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Re: text field

From: Frank Bax <fbax(at)sympatico(dot)ca>
To: "Josh Berkus" <josh(at)agliodbs(dot)com>
Cc: Raphael Bauduin <raphael(at)be(dot)easynet(dot)net>, pgsql-novice(at)postgresql(dot)org
Subject: Re: text field
Date: 2002-01-30 01:21:04
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-novice
At 01:35 PM 1/29/02 -0800, Josh Berkus wrote:
>> I need to put a field in a database that will hold a login for the
>>  users.
>> That login is rather long (it's their e-mail address) and of variable
>>  length (I can't change that :-).
>> I thought of using the text type, but wondered what were the
>>  implications in terms of speed and amount of data (does it use much
>>  more space than othe character types?)
>Not in PostgreSQL.  However, you may find that some interfaces (such as
> ODBC and JDBC) put limits on waht you can do with a Text column.  For
> example, MS Access/ODBC will interpret a TEXT field (or and VARCHAR
> over 250 chars) as a "memo" field and refuse to let you search or
> aggregate on the field.
>Otherwise, TEXT and VARCHAR perform the same in PostgreSQL.

Almost the same?  I read recently that VARCHAR(n) has a minor overhead on
UPDATE to enforce the max length.

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