Test whether named column exists in a view

Question

hi,
I need a test, for an if..then else clause to tell me whether there is a column named 'family' in a view.
Thanks in advance,
Jon

Answer 1

Hallo,
DECLARE
v_dummy number;
BEGIN
select 1 into v_dummy from dual
where exists (select null from dba_tab_columns
                    where table_name = 'YOUR_VIEW'
                    and column_name = 'FAMILY'
                    and owner = 'YOU');
EXCEPTION
WHEN NO_DATA_FOUND
THEN
   v_dummy:= 0;
END;
IF v_dummy = 1 THEN
dbms_output.put_line('Column exists');
ELSE
dbms_output.put_line('Column doesn't exist');
END IF;
Read about dba(all)_objects here
http://download-uk.oracle.com/docs/cd/B19306_01/server.102/b14237/statviews_2005.htm#i1583352
Regards
Dmytro
dbms_output corrected
Message was edited by:
        Dmytro Dekhtyaryuk