I3arry

07-02-2007, 04:32 PM

I have a row called totalkills and one called totaldeaths, how could i have it return the ratio of them both EG totalkills = 100 totaldeaths = 10 ratio = 10/1

(not sure if php or sql forum is best!)

Thanks for your time :)

ralph l mayo

07-03-2007, 01:48 PM

Is this a trick question or something? SELECT totalkills/totaldeaths FROM table

I3arry

07-03-2007, 03:37 PM

...

and how does that helpget the ratio?

whizard

07-03-2007, 03:59 PM

That is the query you use, and it will return the ratio you are looking for.

Dan

ralph l mayo

07-04-2007, 02:34 AM

If you're aiming to get fractions from the table you can use this:

DELIMITER ~~

CREATE FUNCTION normalized_fraction(a int, b int) RETURNS text

LANGUAGE SQL

DETERMINISTIC

NO SQL

BEGIN

DECLARE tmp, orig_a, orig_b int;

IF b = 0 THEN

RETURN NULL;

END IF;

SET orig_a = a;

SET orig_b = b;

REPEAT

SET tmp = b;

SET b = a % b;

SET a = tmp;

UNTIL b = 0

END REPEAT;

SET orig_a = orig_a / a;

SET orig_b = orig_b / a;

RETURN CONCAT(orig_a, '/', orig_b);

END~~

After which:

mysql> SELECT *, totalkills/totaldeaths AS ratio, normalized_fraction(totalkills, totaldeaths) AS fractional_ratio FROM test;

+------------+-------------+----------+------------------+

| totalkills | totaldeaths | ratio | fractional_ratio |

+------------+-------------+----------+------------------+

| 1000 | 10 | 100.0000 | 100/1 |

| 10 | 1000 | 0.0100 | 1/100 |

| 10 | 0 | NULL | NULL |

| 0 | 10 | 0.0000 | 0/1 |

+------------+-------------+----------+------------------+

4 rows in set (0.00 sec)

I3arry

07-04-2007, 05:34 PM

ok, (totalkills/totaldeaths) as totalkd works

How about doing the math when entering the data

I tried

$totalkd = trim($playersArray[$i][2])/trim($playersArray[$i][3]);

and

$totalkd = $totalkills/$totaldeaths;

And they both return single numbers

edit fixed, forgot to set it to float