RE: changing a column type

  • From: "Powell, Mark" <mark.powell2@xxxxxx>
  • To: oracle-l <oracle-l@xxxxxxxxxxxxx>
  • Date: Fri, 1 Jun 2012 19:43:11 +0100


MPOWEL01@UT1> create table marktest2 ( fld1 number, fld2 varchar2(30));

Table created.

MPOWEL01@UT1> insert into marktest2 values (1,'something or other');

1 row created.

MPOWEL01@UT1> commit;

Commit complete.

MPOWEL01@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


-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] 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?


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

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