RE: Odd virtual column error
Date: Mon, 18 Aug 2008 10:40:38 -0400
> -----Original Message-----
> From: oracle-l-bounce_at_freelists.org
> [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of William Robertson
> Sent: Monday, August 18, 2008 10:32 AM
> To: Oracle-L
> Subject: Re: Odd virtual column error
> Agreed - why would you need a CHAR(4) for a 1-character
> substring of a 2-character column? Or for anything else, for
> that matter? CHAR is provided to look good in ANSI
> compatibility checklists, you are not supposed to actually use it.
> 2008/8/18 Stefan Knecht <knecht.stefan_at_gmail.com>
> Try using VARCHAR2(4) instead of CHAR(4) ?
::Applause:: Now to convince those around me.
However, how do you feel about char(1) vs varchar2(1)? <--- size of one byte.
And, what overhead, if any, is there in having a varchar2 column defined as a much bigger field that you think you will ever need? Too many times have I seen requests for varchar2(10) to varchar2(12) only to see it expanded again at a later date. Why not make it varchar2(40)?
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