maybe a bug?
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
$? is NULL.
Is that change of result intended? (as going to SQL 92?)
Disk
=?iso-8859-2?Q?=A3ukasz_Odziewa?= <disk@ceti.pl> writes:
I have problem with new PGSQL 7.1.3
I've a table like that TT ( V VARCHAR(10), D DATE, I INTEGER);
and query "SELECT V || '</TD><TD>' || D || '</TD><TD>' || I FROM TT;"
In version 7.1.2 result is '$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