From: Sandro Dentella <sandro.dentella@tin.it>
To: pgsql-interfaces@postgresql.org
Subject: function returning NULL?
Date: Mon, 30 Apr 2001 10:56:00 +0200
Message-ID: <20010430105600.B6311@bluff.ermit.it> (raw)
I'm trying to create a function that should return a date, and occasionally
NULL value. I can't see how to do that. I'm using pl/tcl.
CREATE FUNCTION "start" (text,text) RETURNS date AS '
regsub ^. $1 "$2" job
spi_exec "select start_date from jobs where job_code = ''$job''" {
if {[info exist start_date]} {
return $start_date
}
}
# return "2/2/2222" HERE I want NULL
return "2/2/2222"
'LANGUAGE 'pltcl';
That is to say I'd like to have a function that returns a date but under
some circumstancies it leave it blanck.
TIA
sandro
*:-)
--
Sandro Dentella *:-)
e-mail: sandro@ermit.it sandro.dentella@mi.infn.it
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To: pgsql-interfaces@postgresql.org
Cc: sandro.dentella@tin.it
Subject: Re: function returning NULL?
In-Reply-To: <20010430105600.B6311@bluff.ermit.it>
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