How to include a where clause in a query from another column

I have two tables: pointer_table(col_name varchar, col_val varchar, wh_clause varchar) value_table(col_1 varchar, col_2 varchar, value varchar)

col_name in pointer_table denotes the column in value_table (either col_1 or col_2), while wh_clause contains a complex where clause to be used in the value_table.

When working with col_name and col_val, it's easy to join the two tables eg:

select vt.value from (select col_val from pointer_table where col_name = 'col_1') pt inner join (select col_1, value from value_table) vt on pt.col_val = vt.col_1

However I sometimes need to apply the contents of pointer_table.wh_clause on value_table (wh_clause contains conditions like col_1 = 'pine' and col_2 = 'Argentina'.

Is it possible in DB2 to somehow apply the content of that field as where clause for another table in a query?