I've searched for an answer to this all over but couldn't find what i'm really looking for! so i had to ask here..

i don't know how to explain this but here is a table :

```
  Date          BL          Client  Design      Ref1    Ref2    Ref3    Qte
  14/01/2013    13011401    A       VT          VT1     JAUNE   XL      3
  14/01/2013    13011402    B       VT          VT2     GRIS    L       30
  16/01/2013    13011601    D       VT          VT1     GRIS    L       10
  16/01/2013    13011602    C       VT          VT2     GRIS    L       32
  19/01/2013    13011903    F       VT          VT2     JAUNE   L       15

```

i'm looking for a result that could look like the following:

```
  Date          BL          Client  Design      Ref1    Ref2    Ref3    Qte
  14/01/2013    13011401    A       VT          VT1     JAUNE   XL      3
  14/01/2013    13011402    B       VT          VT2     GRIS    L       62
  16/01/2013    13011601    D       VT          VT1     GRIS    L       10
  19/01/2013    13011903    F       VT          VT2     JAUNE   L       15

```

edit: sum **Qte** if there is a duplicate (**Design,Ref1, Ref2, Ref3**)

don't know if this is possible but i would appreciate your help!