I have some problem to get the data like if I have a columns in table

```
CDPRCL          CDITEM              CDSQFT      F162_U
18-020-0056     SOUND SYS           1.00        H
18-020-0056     WET BAR             2.00        D 

```

as you can see the `CDPRCL` has two same number but diff data in other columns.
I want the data in this format , please see the result for column `F162_U`

```
CDPRCL          CDITEM              CDSQFT      F162_U
18-020-0056     SOUND SYS           1.00        H,D
18-020-0056     WET BAR             2.00        H,D

```

how to get this . please help with this . 
thanks in advance