Re: Unique UUID value - PostgreSQL 9.2

["David G. Johnston" <david.g.johnston@xxxxxxxxx>]

On Mon, Mar 14, 2016 at 2:37 PM, drum.lucas@xxxxxxxxx <drum.lucas@xxxxxxxxx> wrote:

I want to import data from table A to table B, but when doing it the column "code" on table B has to have some unique random data.

I could use UUID like:

insert into "TB" ("Id", "Title") values (uuid_generate_v4(), '111'); 

but I'm doing:

INSERT INTO tableb (SELECT * FROM TABLEA)

So, how to use UUID using the SELECT above?

​By explicitly listing column names instead of using "*" and then instead of copying a column from A to B you omit the column from A and replace it with a function call.​

​INSERT INTO tableb ("Id", "Title")

SELECT uuid_generate_v4(), "Title"

FROM tablea​;

David J.