I'm assuming this is a java program that's extracting this information. It's easy and is actually something that should have been covered in any java course or book. I'm going to assume for the purposes of the code sample that s2 is percent and s3 is price (as you haven't named your variables descriptively; change that habit if you're going to program, it makes things hard to work with).

<pre>code:<hr>
int maxPercent = Integer.MIN_VALUE;
int minPrice = Integer.MAX_VALUE;

while (rs.next())
{
String s1 = rs.getString(1);
int s2 = rs.getInt(2);
int s3 = rs.getInt(3);
int s4 = rs.getInt(4);
System.out.println( s1 +" " + s2 +" " + s3 +" " + s4);

if(s1 > maxPercent)
maxPercent = s2;

if(s2 < minPrice)
minPrice = s3;
}

System.out.println("Max percent is " + maxPercent);
System.out.println("Min price is " + minPrice);
</pre><hr>

Keep in mind, that will only identify the values and will not identify the records in which they are contained. For something like that, you'll have to make a data structure to hold these records.