<div>
just have to check if empty:<br />
<br />
if (!strlen(row[1])) {<br />
&nbsp; &nbsp;// it is empty or null<br />
}
</div>


just have to check if empty:

if (!strlen(row[1])) {
   // it is empty or null
}

<div>
and what if I want to distinguish between empty and null?
</div>


and what if I want to distinguish between empty and null?

<div>
<div class="content wysiwyg-content">
this is my code:<br />
<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MYSQL *conn;<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MYSQL_RES *res;<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MYSQL_ROW &nbsp;row;<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;query = query1 + me-&gt;id;<br />
<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;conn = mysql_init(NULL);<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;mysql_real_connect(conn, &quot;&quot;, &quot;&quot;, &quot;&quot;, &quot;&quot;, 0, NULL, 0);<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;mysql_query(conn, query.c_str());<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;res = mysql_store_result(conn);<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;while(row = mysql_fetch_row(res))<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;user.id = row[0];<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;user.name = &quot;&quot;;<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;user.session = &quot;&quot;;<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;user.socket = -1;<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;user.sequence = row[1];<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;me-&gt;q.push_back(user);<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br />
<br />
I want to check if row[1] is a mysql null, how do I do that?
</div>
</div>


this is my code:

                MYSQL *conn;
	MYSQL_RES *res;
	MYSQL_ROW  row;
	
	query = query1 + me->id;

	conn = mysql_init(NULL);
	mysql_real_connect(conn, "", "", "", "", 0, NULL, 0);
	mysql_query(conn, query.c_str());
	res = mysql_store_result(conn);
	
	while(row = mysql_fetch_row(res))
	{
		user.id = row[0];
		user.name = "";
		user.session = "";
		user.socket = -1;
		user.sequence = row[1];
		me->q.push_back(user);
	}

I want to check if row[1] is a mysql null, how do I do that?

mysql null

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