Re: mysql problem
From: Fatted (obeseted_at_yahoo.com)
Date: 09/23/04
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Date: Thu, 23 Sep 2004 15:47:24 +0200
Alfredo wrote:
<snip>
> Everything works ok until I do
> res = mysql_store_result(conn);
>
> if (res)
>
> Thus, res becomes null. Why?
>
Check out:
http://dev.mysql.com/doc/mysql/en/mysql_store_result.html
<quote>
mysql_store_result() also returns a null pointer if reading of the
result set failed. You can check whether an error occurred by checking
if mysql_error() returns a non-empty string, if mysql_errno() returns
non-zero, or if mysql_field_count() returns zero.
An empty result set is returned if there are no rows returned. (An empty
result set differs from a null pointer as a return value.)
</quote>
Some additional debugging code may be required...
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