im getting an error on the With Dups portion of the code.

With Dups as

(

????select *, row_number() over

(partition by Product_Code order by Product_Code) as RowNum

????from #prod

)

Msg 102, Level 15, State 1, Line 3

Incorrect syntax near '?'.

Msg 102, Level 15, State 1, Line 5

Incorrect syntax near '?'.