RE: changing a column type

From: Powell, Mark <mark.powell2_at_hp.com>
Date: Fri, 1 Jun 2012 19:43:11 +0100
Message-ID: <7C4BF3B32B80CC44AE37D31B172415937DDF8611F4_at_GVW1337EXC.americas.hpqcorp.net>

Observe:

MPOWEL01_at_UT1> create table marktest2 ( fld1 number, fld2 varchar2(30));

Table created.

MPOWEL01_at_UT1> insert into marktest2 values (1,'something or other');

1 row created.

MPOWEL01_at_UT1> commit;

Commit complete.

MPOWEL01_at_UT1> alter table marktest2 modify (fld1 varchar2(10)); alter table marktest2 modify (fld1 varchar2(10))

                              *

ERROR at line 1:
ORA-01439: column to be modified must be empty to change datatype

MPOWEL01_at_UT1>

-----Original Message-----
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Zelli, Brian Sent: Friday, June 01, 2012 1:51 PM
To: oracle-l
Subject: changing a column type

A colleague wants to change a column type from numeric to alpha-numeric. Can he change it with data in it?

ciao,
Brian

Brian Zelli
Senior Database Administrator
Enterprise Applications/Systems Integration Roswell Park Cancer Institute (716) 845-4460
brian.zelli_at_roswellpark.org

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Received on Fri Jun 01 2012 - 13:43:11 CDT