RE: changing a column type
Date: Fri, 1 Jun 2012 15:19:50 -0500
Message-ID: <F077F09A0E11504D9E720358BEE994D10A46E71A_at_APSW0553EVS.ms.ds.uhc.com>
And to me, that's the strange thing.
I can see allowing Character to varchar2. I can also see not allowing Character to Numeric.
But why not allowing Numeric to Character ?
-----Original Message-----
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of David Fitzjarrell
Sent: Friday, June 01, 2012 3:16 PM
To: Brian.Zelli_at_RoswellPark.org; oracle-l
Subject: Re: changing a column type
That depends upon the change; a change from char to varchar2 is allowed with the column populated but a change from a numeric to a character type is not.
David Fitzjarrell
From: "Zelli, Brian" <Brian.Zelli_at_RoswellPark.org> To: oracle-l <oracle-l_at_freelists.org> Sent: Friday, June 1, 2012 12:48 PM
Subject: RE: changing a column type
I thought you would not be able to change it with data in it but he told me he has in the past. I wasn't so sure......
ciao,
Brian
-----Original Message-----
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Powell, Mark
Sent: Friday, June 01, 2012 2:43 PM
To: oracle-l
Subject: RE: changing a column type
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
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Received on Fri Jun 01 2012 - 15:19:50 CDT