[asterisk-dev] tilghman: trunk r247787 - /trunk/channels/chan_sip.c
Tony Mountifield
tony at softins.clara.co.uk
Fri Feb 19 10:49:28 CST 2010
In article <201002190954.15281.tlesher at digium.com>,
Tilghman Lesher <tlesher at digium.com> wrote:
> On Friday 19 February 2010 06:46:53 Tony Mountifield wrote:
> >
> > MySQL is can easily distinguish between 0 and NULL in numeric columns.
> >
> > If you have the statement: row = mysql_fetch_row(result);
> > then row[n]==NULL if the corresponding column contains an SQL NULL, but if
> > the column contains a zero, row[n] points to the string "0".
>
> Perhaps this is something that MySQL has finally fixed in later versions, but
> at one time, this was indeed the problem.
I don't know how far back this would be. It has behaved as I described
since I started using the C API for MySQL 3.23 in 2004.
Cheers
Tony
--
Tony Mountifield
Work: tony at softins.co.uk - http://www.softins.co.uk
Play: tony at mountifield.org - http://tony.mountifield.org
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