cuted on deletion.
  throttle 2;
}
</pre></blockquote>
</p>


<p>
Repeatedly issue a query for <strong>60</strong> seconds. Output number of repetitions:
<blockquote><pre>
set @counter := 0;
while(script_runtime() < 60) 
{ 
  SELECT Continent, COUNT(*) FROM world.Country GROUP BY Continent;
  set @counter := @counter + 1;
}
SELECT @counter;

+----------+
| @counter |
+----------+
|    15654 |
+----------+
</pre></blockquote>
</p>

<p>
Use an <strong>otherwise</strong> clause:
<blockquote><pre>
set @count :=