从多个数组插入相同的查询

Question

I make a mathematichs function in mysql. and give two result because it`s calculate from 2 records. this is the source :

$calculate= mysql_query("select markers_tujuan.lng,markers_tujuan.lat,open_list.lat, open_list.lng,
((SQRT((((markers_tujuan.lat-markers_tujuan.lng)*(markers_tujuan.lat-markers_tujuan.lng)) + ((open_list.lat-open_list.lng)*(open_list.lat-open_list.lng)))))+(sqrt((((markers_tujuan.lat-open_list.lat)*((markers_tujuan.lat-open_list.lat)))+((markers_tujuan.lng-open_list.lng)*((markers_tujuan.lng-open_list.lng))))))) 
as hasil
from markers_tujuan, open_list");

$op=mysql_query("select * from open_list");
$line=mysql_fetch_assoc($op);


/* fetch associative array */
while ($row = mysql_fetch_assoc($calculate)) {
    printf ("1(%s %s),(%s %s),%s <br> 
", $row["lng"], $row["lat"], $row["lat"], $row["lng"], $row["hasil"]);
        $try=mysql_query(" UPDATE open_list SET hitung = '".$row["hasil"]."' ");
    }

and the result is

but I didn`t understand why query in mysql updating same query

Answer 1

As others have pointed out, your UPDATE statement does not have a WHERE condition. Therefore, every single row in your table will be updated, each time:

mysql_query(" UPDATE open_list SET hitung = '".$row["hasil"]."' ");

You should specify the PRIMARY KEY while updating. In this case, it is the column id (I presume). Example:

UPDATE open_list SET hitung = 'example' WHERE id = '4'