Hi all,

I have this records in a table

+--------+-----------+---------+--------+----+
| Art.   | Descrip.  | Pr.Unit | Quant. |Tax |
+--------+-----------+---------+--------+----+
  00001    ABC         12.23      2        1
  00002    CDS          9.33      1        3
  00003    C1           2.99      1        2
  00004    C2           1.44      2        1
  00005    C3           2.23      1        3
+--------+-----------+---------+--------+-----+

My question is, how can i group the (Pr.Unit*Quant)*TAX/100 for TAX 1,2,3.. and the Total Value for all TAX 1,2,3,4....

João Batista