Re: maybe a bug?

=?iso-8859-2?Q?=A3ukasz_Odziewa?= <disk(at)ceti(dot)pl> writes:
> I have problem with new PGSQL 7.1.3
> I've a table like that TT ( V VARCHAR(10), D DATE, I INTEGER);
> and query "SELECT V || '</TD><TD>' || D || '</TD><TD>' || I FROM TT;"

> In version 7.1.2 result is '$V</TD><TD>$D</TD><TD>$I' when $? means text
> representation of ?. It's always true even if any $? is NULL.

> In version 7.1.3 result is '$V</TD><TD>$D</TD><TD>$I' or NULL if any of
> $? is NULL.

The behavior you attribute to 7.1.3 is correct, and would have been the
same in any 7.1.* release. I do not believe that 7.1.2 would have been
different.

Try COALESCE(foo::text, '') if you want to substitute an empty string
for NULL values.

regards, tom lane