Re: An idea on faster CHAR field indexing

Giles Lean <giles(at)nemeton(dot)com(dot)au> writes:
> My only experience of this was tuning a sort utility, where the extra
> time to convert the strings with strxfrm() and the large additional
> memory requirement killed any advantage strcmp() had over strcoll().
> Whether this would be the case for database indexes in general or
> ideed ever I don't know.

Interesting. That certainly suggests strxfrm could be a loser for
a database index too, but I agree it'd be nice to see some actual
measurements rather than speculation.

What locale(s) were you using when testing your sort code? I suspect
the answers might depend on locale quite a bit...

regards, tom lane