存货分颜色及尺码
例:
存货     颜色     尺码   数量
256#     CKR      32     2
256#     CKR      34     3
256#     LKR      32     10
256#     LKR      34     12
256#     LKR      36     8
256#     LKR      38     14
256#     LKR      40     16
-------------------------------------------------------------------
  存货           颜色      -               尺码
                                    32     34    36   38  40  free 
--------------------------------------------------------------------
256#           CKR                   2     3
256#           Lkr                  10     12    8    14  16  
.....
在DBgrid如何实现呢?