Re: upper case constraint?

From: Niall Litchfield <n-litchfield_at_audit-commission.gov.uk>
Date: Thu, 12 Feb 2004 15:56:50 -0000
Message-ID: <402ba243$0$10339$ed9e5944@reading.news.pipex.net>

the check constraint will work, but throw an error back to the user. an alternative uses a trigger

SQL*Plus: Release 9.2.0.4.0 - Production on Thu Feb 12 15:52:34 2004

Connected to:
Oracle9i Enterprise Edition Release 9.2.0.4.0 - Production With the Partitioning, OLAP and Oracle Data Mining options JServer Release 9.2.0.4.0 - Production

SQL> CREATE TABLE bla
2 (
3 firstname varchar2(10) CHECK(UPPER(firstname) = firstname) 4* );

Table created.

SQL> insert into bla values ('niall');
insert into bla values ('niall')
*
ERROR at line 1:
ORA-02290: check constraint (NIALL.SYS_C003332) violated

SQL> create or replace trigger trg_bla
  2 before insert or update on bla
  3 for each row
  4 begin
  5 :new.firstname := UPPER(:new.firstname);   6 end;
  7 /

Trigger created.

SQL> insert into bla values ('niall');

1 row created.

SQL> select * from bla
2 ;

FIRSTNAME

NIALL which you prefer depends on whether you wish to educate users or correct them...

-- 
Niall Litchfield
Oracle DBA
Audit Commission UK
"Thomas Kellerer" <spam_eater_at_gmx.net> wrote in message
news:c0g67j$16fkdi$1_at_ID-13919.news.uni-berlin.de...


>

>

> On 12.02.2004 16:18 D. Alvarado wrote:

>

> > Hello, I'm working with Oracle 8.1.7 for Solaris.  Is there any

> > constraint I can put on a VARCHAR2 column to force its characters

> > always be stored as upper case?  Thanks - Dave

>

> what about

>

> CREATE TABLE bla

> (

>     firstname  varchar2(10) CHECK(UPPER(firstname) = firstname)

> );

>

> Haven't tried it though

>

> Thomas

Received on Thu Feb 12 2004 - 09:56:50 CST