Question

I have data columns:

id  name  type  number
 1   n1    t1    num1
 2   n2    t1    num2
 3   n3    t1    num3
 4   n10   t1    num10

 5   n4    t2    num4
 6   n5    t2    num5
 7   n6    t2    num6

 8   n7    t3    num7
 9   n8    t3    num8
 10  n9    t3    num9

Which select I shuld run to get this result?

id  name  type  number
 1   n1    t1    num1
 5   n4    t2    num4
 8   n7    t3    num7

 2   n2    t1    num2
 6   n5    t2    num5
 9   n8    t3    num8

 3   n3    t1    num3
 7   n6    t2    num6
 10  n9    t3    num9

 4   n10   t1    num10

I guess it could be right way to do it using procedure but is it possible to sort it in the simple query?

Update1:
name, type and number columns are independent. And I need to sort it by type as you can see in the result example.

Answer 1

  SELECT x.id,x.name,x.type,x.number
  FROM (SELECT t.id,
               t.name,t.type,t.number,
               CASE
                 WHEN @type != t.type THEN @rownum := 0
                 WHEN @type = t.type THEN @rownum := @rownum + 1
                 ELSE @rownum 
               END AS rank,
               @type := t.type
          FROM  scores t,
               (SELECT @rownum := 0, @type)var
      ORDER BY t.type)  x
ORDER BY x.rank, x.type

SQL FIDDLE HERE