HI Ram,
What do you mean by View Design time data?
Are you trying to see SQL under Validation>Display optimized SQL
Why is there a need to use lookup() function in where clause. You can always create a New Function call in Query transform and then use the output column resulting from lookup in the subsequent query transform and then apply a filter on it
Source>>Query(with Lookup() function producing result column L_Col)>Query_1(filter on L_Col )> Target
Regards
Arun Sasi