Re: BUG #5478: ILIKE operator returns wrong result

Tom Lane wrote:
> BTW, while I'm looking at this, I notice that there was an oversight in
> the change that made us throw an error for \ at the end of the LIKE
> pattern.  We throw error in the first code chunk that deals with \
> but we don't do so here:
>
>                 if (plen < 2)
>                     return LIKE_FALSE;
>                 firstpat = CHAR(p[1]);
>
> In some cases the problem is masked because we'll eventually apply the
> normal \ processing, but I think there are other cases where we'll reach
> a LIKE_ABORT condition and return false without ever throwing the error.
> Seems like this should be fixed.  But should we back-patch that fix into
> 8.4?  We didn't backpatch the original change for fear of breaking
> existing apps, and the same argument could probably be made this time.
> Should I change it in 8.4, or only 9.0?

Tom has patch this and the fix will appear in the next minor release of
Postgres 8.3.X and 8.4.X.

--
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com