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Oracle SQL [message #648842]

Fri, 04 March 2016 10:20

mcdinesh.200@gmail.com
Messages: 18
Registered: March 2016

Junior Member

Hi,

How can i add a new column in one table from another table in Alter table statement.

If there is any possibilities kindly let me know.

Thanks in Advance,
Dinesh Kumar
Chennai.

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Re: Oracle SQL [message #648843 is a reply to message #648842]

Fri, 04 March 2016 10:25

Michel Cadot
Messages: 68776
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

If you mean in one statement, No.

[Updated on: Fri, 04 March 2016 10:26]

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Re: Oracle SQL [message #648932 is a reply to message #648843]

Mon, 07 March 2016 16:18

Bill B
Messages: 1971
Registered: December 2004

Senior Member

You have to alter the table and then update the column using a join, for example the following would work if you have someway to join the first table row to the second table row.

update table mytable add col23 varchar2(40);

update mytable a
set col23 =
(select colx
from MyOtherTable b
where a.id = b.id);

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Re: Oracle SQL [message #648943 is a reply to message #648932]

Tue, 08 March 2016 04:24

gazzag
Messages: 1119
Registered: November 2010
Location: Bedwas, UK

Senior Member

Bill B wrote on Mon, 07 March 2016 22:18

update table mytable add col23 varchar2(40);

Should obviously be:

ALTER table mytable add col23 varchar2(40);

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Re: Oracle SQL [message #648945 is a reply to message #648943]

Tue, 08 March 2016 07:48

Bill B
Messages: 1971
Registered: December 2004

Senior Member

LOL. Sorry for the typo.

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