Re: What's this...varchar2 as fast as char?

Sean Emery wrote:
>
> Hello,
>
> Excuse me for bringing up a probably hashed and re-hashed argument, but
> two oracle consultants informed us that we should probably never use a
> char field because varchar2 fields are just as fast inside an Oracle DB
> and you never have to rtrim() them.

  varchar2 is variable length. As a result, it is space saving. In effect, it will save the time in table scan as it scans less blocks. Moreover, it uses non-blank padded comparison semantics. Thus, it reduces some overhead in comparison.

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Name   : Lun Wing San
Title  : Oracle Application Developer of Hong Kong Productivity Council
         Oracle Database Administrator and System Administrator of QRC
Phone  : (852)27885841

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