Comparing list of values against table

Question

I tried to find solution for this problem for some time but without success so any help would be much appreciated. List of IDs needs to be compared against a table and find

Answer 1

One way of tackling this is to dynamically create a common table expression that can then be included in the query. The final synatx you'd be aiming for is:

with list_of_values as (
  select 100 val from dual union all
  select 200 val from dual union all
  select 300 val from dual union all
  ...)
select
  lov.val,
  ...
from
  list_of_values lov left outer join 
  other_data     t   on (lov.val = t.val)

It's not very elegant, particularly for large sets of values, but compatibility with a database on which you might have few privileges is very good.