Re: Q: How ORDER BY is being done inetrnally?

> -----Original Message-----
> From: Tom Lane [mailto:tgl(at)sss(dot)pgh(dot)pa(dot)us]
>
>
> Text sorting depends on strcoll() and nothing but. See varstr_cmp().

I see, apparently sort done for "ORDER BY" clause is case-sensitive.

But problem is still there. It is about "I"-with-dot and "I"-without-dot
in Turkish again. While all UNIX programs put "I"-without-dot before
"I"-with-dot, as it should be, PostgreSQL puts it in reverse order.

I examine the code for any possible gotchas, but I am confused about
what function is being called by what. Especially that all those sort
methods and functions are not hard-coded but stored in pg_am* catalogue
tables. Could someone please explain -very briefly- what exactly is
happening when a sort is performed. A kind of stack trace: which
function
calls which one would be very appreciated.

Best regards,
Nicolai Tufar