Typical scenario required your suggestion

Question

Hi,
Database : Oracle 11.2.0
I have a table with some n number of columns and each column of the table should have only specific values only.
Eg1:
Column Possible Values
Col1 varchar2 100 or 150 or 130
Col2 number Between 1 and 9999
Col3 number 40 or 40.00
60 or 60.00
90 or 90.00
col4 varchar2 Week4 or Week6 Week8
If the column has any of the values other than specified then that row should be identified with the mis-matched columns.
Suggestions expected from your end.
Regards
Satya
Edited by: user608405 on Dec 26, 2012 1:22 AM

Answer 1

user608405 wrote:
Also we have to identify which column is mis-matched and there are about 65 to 70 columns in the tableA bad performer example (If you have Huge data, but solves your purpose):-
select 'COL1 is Bad' ref_col, col1, ... colN
  from your_table
where col1 not in (100, 130, 150)
union all
select 'COL2 is Bad' ref_col, col1, ... colN
  from your_table
where col2 not between 1 and 9999
union all
select 'COL3 is Bad' ref_col, col1, ... colN
  from your_table
where to_number(col3) not in (40, 60, 90)
union all
select 'COL4 is Bad' ref_col, col1, ... colN
  from your_table
where col4 not in ('Week4', 'Week6', 'Week8');An Alternative:-
create table dummy_base_table as
select * from base_table;
alter table dummy_base_table add constraint chk_col1 check (col1 in (100, 130, 150));
alter table dummy_base_table add constraint chk_col2 check (col2 between 1 and 9999);
alter table dummy_base_table add constraint chk_col3 check (to_number(col3) in (40, 60, 90));   --> Untested, but should work.
alter table dummy_base_table add constraint chk_col4 check (col4 in ('Week4', 'Week6', 'Week8'));
exec dbms_errlog.create_error_log('dummy_base_table');
insert into dummy_base_table
select column1, ..., columnN
  from base_table
log errors
reject limit unlimited;
select * --> Records in this Table will be the records that do not follow the Constraints
  from err$_dummy_base_table;Edited by: Purvesh K on Dec 26, 2012 3:10 PM
--Added Alternative of DBMS_ERRORLOG