MySQL greatest value in row?

Question

I\'m using MySQL with PHP. This is like my table: (I\'m using 3 values, but there are more)

id | 1 | 2 | 3
---+---+---+----
1  | 3 |12 |-29
2  | 5 |8  |8
3  | 99|7         


        

Answer 1

In the php side, you could do something like this:

foreach ($rows as $key => $row) {
  $bestCol = $best = -99999;
  foreach ($row as $col => $value) {
    if ($col == 'id') continue; // skip ID column
    if ($value > $best) {
      $bestcol = $col;
      $best = $value;
    }
  }
  $rows[$key]['best'] = $bestCol;
}

Or something similar...