Re: [HACKERS] Bug in LIKE ?

On Mon, 7 Jun 1999, Tom Lane wrote:

> Daniele Orlandi <daniele@orlandi.com> writes:
> > Uhm.... I think the problem is a little worse:
> 
> It's a real bug, and I see the problem: someone changed the handling of
> LIKE prefixes in gram.y, without understanding quite what they were
> doing.  6.4.2 has:
> 
>                  if (n->val.val.str[pos] == '\\' ||
>                      n->val.val.str[pos] == '%')
>                     pos++;
> 
> where 6.5 has:
> 
>                  if (n->val.val.str[pos] == '\\' ||
>                      n->val.val.str[pos+1] == '%')
>                     pos++;
> 
> The first one is right and the second is not.
> 
> Unless we fix this, LIKE will be completely busted for any string
> containing non-leading %.  Shall I ... ?

Please do...looking through the logs, any idea who changed this one? *gets
out billy club* *grin*

Marc G. Fournier                   ICQ#7615664               IRC Nick: Scrappy
Systems Administrator @ hub.org 
primary: scrappy@hub.org           secondary: scrappy@{freebsd|postgresql}.org