On 01/14/2013 09:16 AM, Mino Haluz wrote:
and how to check null value taken from database?
$dbr(ra=>[0,0]) == ?
That depends on what you truly mean by "null" value. :-)
If you want to check for no rows returned, you can check the value of
$dbr(ra=>rows) to get a count, e.g.
if($dbr(ra=>rows) < 1)
if(! $dbr(ra=>rows))
If you are looking to test for a truly NULL value as opposed to an empty
string, I suspect that varies with database API. I use db_postgres, and
if I remember correctly, 'defined' works for that:
if(! defined $dbr(ra=>[0,0]))
That's IIRC. I am not 100.0% sure.
However, other DB interface implementations may return an empty string
even in case of a null value, in which case strempty() may be the better
test.
-- Alex
--
Alex Balashov - Principal
Evariste Systems LLC
235 E Ponce de Leon Ave
Suite 106
Decatur, GA 30030
United States
Tel: +1-678-954-0670
Web: http://www.evaristesys.com/, http://www.alexbalashov.com/
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