Question

I am using ORACLE database.
EDIT:

I want only tables not present in a list, not all those tables in database.

Ex: In my database following tables are present:

a
b
c
d
e
r
s

I am being given a list of tables:

a
b
c
v
h

out of which i want to find out which tables are absent(not present) in my database.

so: a, b, c are those tables which are present in my database. So excluding these tables my answer will be:

v and h 

My answer is not d,e,r,s

How can i write a query for this to find out?

Answer 1

You can use

SELECT a.table_name FROM (SELECT 'A' as table_name 
               FROM DUAL UNION
               SELECT 'B' as table_name 
               FROM DUAL UNION
               SELECT 'C' as table_name 
               FROM DUAL UNION
               SELECT 'V' as table_name 
               FROM DUAL UNION
               SELECT 'H' as table_name 
               FROM DUAL) a WHERE NOT EXISTS (
SELECT 1 FROM DBA_TABLES b where b.table_name=a.table_name)