You have a point. But in my application, it is necessary. I have to rank students in terms of the number of questions a student answered, ... in terms of the total duration of his exam, ... in terms of his average speed (in sec/question)

Which means that if student "a" is 0.01 sec faster than the rest, then by all means I have to rank him higher that the rest. BTW, only two decimal places are being reported under some columns. Had it been several decimal places like the you pointed ... 70.000001.. I would definitely consider your suggestion.

Thanks. By far, your suggestions are the most optimal.

In reply to Re: Re: What's an Efficient Way to Retrieve a Rank from a MySQL Table? by soon_j
in thread What's an Efficient Way to Retrieve a Rank from a MySQL Table? by soon_j

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.