Oracle regular expression help

Question

I have worked with regular expressions a little bit in unix scripting.
I need to diff two schemas to look for missing objects.
Problem: I changed the naming conventions.
My objects used to end with '_T' and now end with '_MV'
I cant use regular instr because I can have
HELLO_TYPES_T or I could have HELLO_T
I want to trim off the last T and MV and then do a minus to see if I am missing objects.
I I think I need to use regexp_instr with an end of line regular expression, but I can't get the syntax correct. Can someone give me a hand?

Answer 1

Well, how about this:
SQL> with schema1
  2   as ( select  'HELLO_TYPES_T' obj from dual union all
  3        select  'HELLO_T' from dual union all
  4        select  'TYPES_T' obj from dual union all
  5        select  'HELLO_TYPES_MV' obj from dual union all
  6        select  'HELLO_MV' from dual union all
  7        select  'TYPES_MV' obj from dual union all    
  8        select  'OBJECTS_T' obj from dual )
  9  ,    schema2
10   as ( select  'HELLO_TYPES_T' obj from dual union all
11        select  'HELLO_T' from dual union all
12        select  'TYPES_T' obj from dual union all
13        select  'HELLO_TYPES_MV' obj from dual union all
14        select  'HELLO_MV' from dual union all
15        select  'TYPES_MV' obj from dual)
         ---actual query
16    select regexp_replace(obj, '^*(_T|_MV)$', '') regexp
17    from   schema1
18    minus
19    select regexp_replace(obj, '^*(_T|_MV)$', '') regexp
20    from   schema2;
REGEXP
OBJECTS
1 row selected.And vice versa (schema2 minus schema1)