Those values which are there in the IN list but not in the table.

Question

Hi All,
We have a table global_title_isbn having 18 columns with primary key on title_isbn. This table contains approx. 10 million rows.
Normally what we used to get was 10-15 comma seperated list of ISBNs for some business process , for them we have to check into the table to figure out what all ISBNs are not there in the table.
But now a days we are getting a list of more than 100 ISBNs and there are times when only less than 40 ISBNs exist in the table. So figuring out what all ISBN are not there in the given list is very tiresome job.
Is there any way using SQL we get list of only those ISBN which are not there in the table from the list,
eg
select * from global_title_isbn where title_isbn in ( a comma seperated list);
will give me those ISBNs which are there in the global_title_isbn and in the given list..
Desired O/P
a list of ISBN which are there in the given list but do not exist in the table.
PS:-- I have only read access . I cannot create any table/view etc and PLSQL stored procedure.....
Regards
Vineet

Answer 1

I see no problem with my solution.
See examples below:
create table global_title_isbn (title_isbn varchar2(10));
insert into global_title_isbn values ('8888888');
commit;
-- your_string is '9999999','8888888','17262','19283263','328732'
select rtrim(ltrim(extractvalue(list_isbn.column_value,'e'), ''''), '''') as title_isbn
  from table(xmlsequence
              (extract
                (xmltype('<coll><e>' ||replace(:your_string, ',', '</e><e>') ||'</e></coll>')
              , '/coll/*') )
            ) list_isbn
where not exists (select 1
                     from global_title_isbn gt
                    where gt.title_isbn = rtrim(ltrim(extractvalue(list_isbn.column_value,'e'), ''''), ''''));
output:
9999999
17262
19283263
328732
drop table global_title_isbn;
create table global_title_isbn (title_isbn number(10))
insert into global_title_isbn values (8888888);
commit;
-- your_string is '9999999','8888888','17262','19283263','328732'
select rtrim(ltrim(extractvalue(list_isbn.column_value,'e'), ''''), '''') as title_isbn
  from table(xmlsequence
              (extract
                (xmltype('<coll><e>' ||replace(:your_string, ',', '</e><e>') ||'</e></coll>')
              , '/coll/*') )
            ) list_isbn
where not exists (select 1
                     from global_title_isbn gt
                    where gt.title_isbn = rtrim(ltrim(extractvalue(list_isbn.column_value,'e'), ''''), ''''));
output:
9999999
17262
19283263
328732