Oracle FAQ | Your Portal to the Oracle Knowledge Grid |
![]() |
![]() |
Home -> Community -> Usenet -> c.d.o.server -> Re: which column type char,varchar2 is better for index?
Jaguk Ku wrote:
> hi there,
>
> if there are two columns A and B, A is defined as char(10), B is defined as
> varchar2(10)
> if when i create indexes for both of them. which one has better performance,
> and why?
>
> I think it's not much different, if the index is made with b-tree algorithm.
>
> Would anyone teach me what is different and which one is better and why?
>
> Thanks in advance,
>
> Jaguk Ku
This is school work and your instructor expects you to build two tables, create a loop, and test this out and learn from what you observe.
-- Daniel Morgan http://www.outreach.washington.edu/ext/certificates/oad/oad_crs.asp http://www.outreach.washington.edu/ext/certificates/aoa/aoa_crs.asp damorgan_at_x.washington.edu (replace 'x' with a 'u' to reply)Received on Thu Jun 10 2004 - 20:05:07 CDT
![]() |
![]() |