Question about this select in issue

Question

Dear all;
I need an idea on how to go about writing this query....i need to compare two fields to see whether they are in another table...it is similar to this the following select statement below
select id, place from table_one t
where t.id and t.place in (select z.zoneid, z.zoneplace from zone z)how do you go about writing such sql query in the proper form

Answer 1

user13328581 wrote:
ok, I am trying to debug this code and I keep getting this error
select * from table_one t
where (t.id, t.sn ) in ('C111', 'P111');and i keep getting the following error below
ora-00920: invalide relational operator
That's because you are looking for a set of data not single values in a list (which is what your right hand side is currently providing.
Convert that list into a set...
select * from table_one t
where (t.id, t.sn ) in (('C111', 'P111'));