Re: Bitmap index scans use of filters on available columns - Mailing list pgsql-hackers

Jeff Janes <jeff.janes@gmail.com> writes:
> On Fri, Nov 6, 2015 at 7:15 PM, Tomas Vondra
> <tomas.vondra@2ndquadrant.com> wrote:
>> I've however also noticed that all the 'like' procedures are marked as not
>> leak proof, which is a bit unfortunate because that's the example from
>> Jeff's e-mail that started this thread.

> Is there a reason they aren't leak proof?  I don't see that they have
> side effects, or that they can throw errors.  What do they leak?

Huh?

regression=# select 'z' like '\';
ERROR:  LIKE pattern must not end with escape character
        regards, tom lane